That being said, I did not like that type of tire when I used it on my 2006 300 XC-W. 2 stroke engines can give false compression readings. If the bike’s owner knows that they will not venture to lower altitudes - the head can be machined to provide appropriate compression for their altitude range. Features may include: Engine Two-Stroke Power Amazingly compact 124cc reed-valve-inducted two-stroke helps produce an awesome power-to-weight ratio. If you would like to get a quote on a new 2006 Yamaha YZ 125 use our Build Your Own tool, or Compare this bike to other Off-Road motorcycles. Race-Ready Features: The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs and gripper seat. The rebound valving is on the rebound piston. hi everyone, new to the board. low cost alternative to a 250f, very fast--$1500. Purchaser acknowledges that they have the expertise as to the intended use of this product, and therefore assumes all risk and liability resulting from use of the product, whether used singly or in combination with other products. A typical engine might have a compression ratio of 8-to-1. And in that time both sold well. 2008 Yamaha YZ125. My main concern. The YZ125 is the perfect choice for riders moving up onto a big wheel, or for riders who just want to experience the scalpel like qualities of motocross at the precision end of the scale. I'm looking for the "safe psi range" for both the 2012 YZ125 and 2012 YZ250 compression. a win-win for all the true moto fans out there. Taneharu Noguchi was a Yamaha GP Racer turned team manager, and later factory-authorized performance parts manufacturer. 4889-1 Internal Socket to remove the compression body from from the cartridge on KYB twin chamber forks, found on Honda CRF 250 & 450. The compression assembly will be working against a vacuum created by the fluid. But I’ve taken into consideration the high octane fuel I’ve used is not a great option for 2 strokes as it has a high detonation therefore works better under higher compression, which means unburnt fuel and oil fouling the plug. We turned the compression clicker out from 10 (stock) to 15. Power is provided by a 2-Stroke, 124cc, Liquid cooled, Reed Valve, Single-Cylinder engine with Kick starter. This would be for a 53. After they had a few break-in rides our initial impression was that they were much stiffer than previous YZ125 forks. Report Abuse. 2001 Yamaha YZ125 2-Stroke. Yamaha needs to reinvent the YZ125 to get buyers to stop buying the old ones. Phathead Racing is proud to offer high quality CNC machined from billet, performance 2-stroke heads at the very best prices. Contact the seller for more information. yamaha yz125 (2003 - 2004) Segment: Enduro/Offroad Some believe that small-displacement bikes are dull, but if they took a ride aboard the 2003 Yamaha YZ125, they'd most likely change their minds. It is credited by Cycle World and Dirt Rider magazines as the bike that started the four-stroke dirt bike revolution. I bought it from craigslist and then added a free flow air filter which i think made it leaner and now im going to put on a pro circuit p ipe and silencer. 2018 KTM 300 XC-W. Jacksonville, FL Map is approximate to keep the seller's location private. 7 psi, we have the following:. Price: $228. In particular, racing kits consist of lighter pistons with flat head, special portings, exhaust bridge, and a new cylinder head designed to increase the compression ratio and improve internal combustion. 4" OF TRAVEL. If the bike’s owner knows that they will not venture to lower altitudes - the head can be machined to provide appropriate compression for their altitude range. There's no better project bike than a Yamaha YZ125. 4 inches of travel, separate adjusters for high- and low-speed compression damping, and a full lock oil. Race-Ready Features: The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs and gripper seat. While the YZ125 is revered as an icon of seventies motocross, that fame is more due to the men who rode it, than the bike itself. See more ideas about Yamaha yz 125, Yamaha and Motorcycle. The YZ125 is the perfect choice for riders moving up onto a big wheel, or for riders who just want to experience the scalpel like qualities of motocross at the precision end of the scale. Yamaha Yz125 Service Manual Repair 2006 Yz 125 DOWNLOAD HERE. 2005 Yamaha YZ 125 pictures, prices, information, and specifications. Due to modern, low-friction components, the shock absorber shows a significant increase in its damping performance and reduces the physical strain for riders. The other places to go get a general compression spec for 2-strokes is either Eric Gorr's work or SBR Rick's MacDizzy 2-stroke site. Mountain Motorsports - Conyers is a Powersports dealership located in Conyers, GA. Purchaser acknowledges that they have the expertise as to the intended use of this product, and therefore assumes all risk and liability resulting from use of the product, whether used singly or in combination with other products. Changes made in settings should be done 1-2 clicks (LS Comp. Overall compression and compression ratios are typically set up for proper operation at sea level. The YZ125 is probably the most nimble bike that I have ever ridden, coming off a modern 4 stroke, you are immediately greeted with a bike that can be positioned anywhere you want. Shop online for OEM Clutch parts that fit your 1997 Yamaha YZ125 (YZ125J1), search all our OEM Parts or call at 1-800-253-7667. Excessive Compression - The most surprising thing we have learned about current day CZs is the abundance of machines that are setup with compression ratios that are ridiculously high. I assume you mean what is the 1983 YZ 125 motocrosser? It was (arguably) the best of the "big 4" ie Japanese 125's of 1983, and it won most of the magazine shootouts of that era. Huge stocks, worldwide shipping from Japan. The 2018 Yamaha YZ 125 is a Off-Road Style Motorcycle equipped with an 124cc, Liquid Cooled, Single-Cylinder, Reed Valve, 2-Stroke Engine and a 6-Speed Manual Transmission. Performing a compression test on a dirt bike's engine can tell a lot and it's something anyone who rides should do occasionally as this gives you a better feel of the engine's top end condition than "feeling the kick", Doing this can serve two purposes. Yamaha YZ125: history, specifications, images, videos, manuals. Purchaser acknowledges that they have the expertise as to the intended use of this product, and therefore assumes all risk and liability resulting from use of the product, whether used singly or in combination with other products. There's no better project bike than a Yamaha YZ125. Find 2017 Yamaha YZ125 at bikesales. Today, the Yamaha YZ125 is one of the few 125 two-strokes still left in production. The engine generates 37. but running dunes and messiing around on jumps it's not a problem being im on the pipe most gears. my ride - mikael persson's yamaha yz 125 How Mikael Persson has turned a shop bought Yamaha YZ125 into an EWC winning machine… Concluding the EWC GP of Greece with a double victory on this Yamaha YZ 125, Mikael Persson is now second in Youth Cup, six points behind leader Joser Garcia. Jun 24, 2018- Explore yamahaenduros's board "Yamaha YZ 125", followed by 450 people on Pinterest. Performance. This cylinder don't look to have many hours on it, and the bore just have very fine scratches. 2020 Yamaha YZ125X First Look: GNCC Racing Motorcycle The resurgence of two-stroke off-road motorcycles continues with the 2020 Yamaha YZ125X. See more ideas about Yamaha yz 125, Yamaha and Motorcycle. VHM has been the world leader in Two Stroke performance heads since 1978. 2003 Yamaha YZ125(S)/LC YZ125 Workshop Service Repair Manual DOWNLOAD 03 This is the Most Complete OEM for the 2003 Yamaha YZ125(S)/LC YZ125 Workshop Service Repair Manual Download. yamaha yz125 (2003 - 2004) Segment: Enduro/Offroad Some believe that small-displacement bikes are dull, but if they took a ride aboard the 2003 Yamaha YZ125, they'd most likely change their minds. Hello I have a 2001 yz 125 and I think it is running to lean and I would like to jet it. This cylinder don't look to have many hours on it, and the bore just have very fine scratches. Model: Bore x Stroke (mm) Displ. Seeing the Enduro market as untapped, Yamaha began development of what they considered to be a “serious” Enduro motorcycle. You have to add crankcase compression to the compression ratio of the cylinder. Inventory Unit Detail Offroad Motorsports & Cycle Sales Jonestown, PA (717) 865-6633. ? I have a 1995 YZ 125 and I just put a ffesh top end in it. Lightweight aluminum frames, Yamaha's patented Power Valve System (YPVS™), and reed-valve inducted engines provide an incredible power-to-weight ratio while maintaining Yamaha's excellent reliability and. The tuning target is a rebound/compression damping ratio of 0. A carefully engineered, advanced aluminum frame and swingarm give the YZ125 the best handling in its class. Yamaha YZ125 Performance Cylinder Head. It features a 1. 8 inches travel. Huge stocks, worldwide shipping from Japan. Service Repair Manual will supply you with practical and complete information guides. The bike runs but my cousin is so used to kick starting big bikes he broke the kick starter shaft😂It is an easy fix but I have no time to do it. Here are some data on the relationship between compression ratio and compression. Performance. Fully case-hardened wrist pin. The complete line of Yamaha's big offroad bikes, 2016 version - this means YZ 125, 250F, 250, 450F. A company profile, with items of news, and production photos are also displayed. Easy Living Yamaha, located in Rome, GA, is an independently owned company serving the Powersports industry since 1972. 2015 YZ125 -12 Hours on rebuild -Compression at 180 psi -FMF shorty exhaust -Suspension set for 150 lbs $3800 obo. Öhlins Racing has been an intricate part of the motorsport industry for more than 30 years. Second, it's been basically the same bike since 2005. I actually have ridden a 1981 YZ-125 but it was really fucked up and had very little power (It had no compression and had to be pop-started). Do not allow your tool to make any contact with the free-piston stem. just want to thank everyone in advance. The Yamaha YZ250 is a two-stroke motocross race bike made by Yamaha. Purchaser acknowledges that they have the expertise as to the intended use of this product, and therefore assumes all risk and liability resulting from use of the product, whether used singly or in combination with other products. 46mm kayaba inverted telescopic fork, 11. 94 mm big bore cylinder. This model year received fork and swingarm revisions, structural strengthening and engine tweak including new carburetor settings for increased. Yz125 needs clutch basket and it should run good low on compression because I have the clutch’s out of it 800 obo will trade - letgo. Clymer Manuals 35,191 views. This would be for a 53. Features may include: ENGINE GNCC®-Tuned YZ125 Power Based on the legendary 125cc liquid-cooled, reed-valve-inducted YZ two-stroke engine, the YZ125X utilizes a revised compression ratio, Yamaha Power Valve System (YPVS) timing, and a model-specific CDI unit—all focused on creating broad power delivery that suits off-road terrain and a wide. 94 mm big bore cylinder. 2008 Honda CRF450R FMF power bomb exhaust Warp 9 Rims RDP Suspension Newly rebuilt top and bottom end by RDP with high compression piston. yamaha yz125 (2003 - 2004) Segment: Enduro/Offroad Some believe that small-displacement bikes are dull, but if they took a ride aboard the 2003 Yamaha YZ125, they'd most likely change their minds. In that time many World, National and Regional Championship Titles have been won in Motocross, Kart and Road Racing. Buyers Guide. when absorbing big hits or heavy landings. 2019 Yamaha YZ125 AGILITY, ABILITY, VICTORY Light weight, but heavy on the fun factor. my 2002 yz 125 will not start, 1 day was running fine and then suddenly started shutting off, replaced spark plug and it ran for 5 minutes and died again, hasnt started at all since. Each Wiseco gasket kit is. 9:1 Compression 2001 Yamaha YZ125 Offroad Motorcycle. I might take it to the track and dunes for kicks once in a while. Enjoy the YZ125 experience now and ascend to a higher level. Due to modern, low-friction components, the shock absorber shows a significant increase in its damping performance and reduces the physical strain for riders. Used 89 yz125 for sale in Fairmont - 89 yz125 posted by Germaine Lewis in Fairmont. I assume you mean what is the 1983 YZ 125 motocrosser? It was (arguably) the best of the "big 4" ie Japanese 125's of 1983, and it won most of the magazine shootouts of that era. This site is not affiliated with Yamaha Motor Corporation. history In the 1970’s, Yamaha was manufacturing three distinct off road motorcycles but unfortunately, nothing existed for the serious “Enduro” enthusiast. Lightweight, quick and easy to maintain, the YZ125 is a perfect transition bike for those too big for 85's but too small or inexperienced for bigger, more powerful four-strokes. 2018 KTM 450 EXC-F Six Days. Changes made in settings should be done 1-2 clicks (LS Comp. Today, the Yamaha YZ125 is one of the few 125 two-strokes still left in production. View comments, questions and answers at the 2004 Yamaha YZ 125 discussion group. Buyers Guide. RACE-READY FEATURES: The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs and gripper seat. I'm not sure if this is normal because this is my first two stroke. YZ125 and YZ250 Compression Testing. Find 2017 Yamaha YZ125 at bikesales. Race-Ready Features: The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs and gripper seat. 00 Enter this link to see more images plus all other. The first thing I do, when a non running bike comes in, is to run a compression test. FREE Shipping. Moose Racing Throttle Cable Yamaha YZ125 / YZ250 Features: Black PVC outer jacket for maximum flexibility and durability; Steel inner casing is tightly coiled for low compression ratios. Phathead Racing is proud to offer high quality CNC machined from billet, performance 2-stroke heads at the very best prices. Race-Ready Features: The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs and gripper seat. The shop where I purchased the ski says it has reduced compression and they say its power valves or rings. Here are some data on the relationship between compression ratio and compression. engine fully warmed up carb drained and line disconnected while holding the. Yamaha YZ125 Repair and Service Manual 1999 YZ 125 repair manual for the 1999 Yamaha YZ125 two-stroke bike. It carries a full line of New & Used Motorcycles, SidexSides, ATVs & PWCs, they sell Yamaha ATV's, Watercraft, Motorcycles & Generators as well as Star motorcycles. Yz125 needs clutch basket and it should run good low on compression because I have the clutch’s out of it 800 obo will trade - letgo. Engine Features GNCC®-Tuned YZ125 Power: Based on the legendary 125cc liquid-cooled, reed-valve-inducted YZ two-stroke engine, the YZ125X utilizes a revised compression ratio, Yamaha Power Valve System (YPVS) timing, and a model-specific CDI unit—all focused on creating broad power delivery that suits off-road terrain and a wide range of. It needed more power, longer suspension and better damping to compete with the class top dog, RM125. 2018 KTM 300 XC-W. One of the strokes is the compression stroke, where the engine compresses a cylinder-full of air and gas into a much smaller volume before igniting it with a spark plug. The Squish Band or "Quench" is defined as that area between the flat of the piston and the flat of the cylinder head at top dead center (TDC). 2006 Yamaha YZ 125 pictures, prices, information, and specifications. 46mm kayaba inverted telescopic fork, 11. Mountain Motorsports - Conyers is a Powersports dealership located in Conyers, GA. yz125 Back in the day it was Yamaha who pioneered the first serious youth motocross bikes - and we're proud of the fact that the YZ85 has launched the careers of so many top riders. Instant download of the factory repair manual for the 2006 Yamaha YZ125 two-stroke bike. after spending hours on the playstation everyday having absolutely no interest in anything in the garage, i brought it upon myself to buy 4 vintage dirtbikes/enduros to. High-Compression Pistons work equally well on stock or modified motors with the same results, more power at every rpm. The GYTR® High Compression Piston Kit provides a performance boost throughout the RPM range while maintaining a high level of durability. The rebound valving is on the rebound piston. For this weeks GP’s Classic Steel we are going to take a look back at the 1996 Yamaha YZ125. Are you sure that you want to delete this answer? Yes No. Today, the Yamaha YZ125 is one of the few 125 two-strokes still left in production. well its been a long time since ive been on a dirt bike, and i picked up a 1999 YZ125 and putting some TLC and some maintenance into it. Honda XR250R single, 9. 85-inch bore and 1. Selling my 1999 yz125. For the 2019 motocross season, Namura Technologies teamed up with NAMURA CHALLENGE AMA DISTRICT 23 – SCMX Millville. Little or no compression generally means the top end is either worn out, or there's a leak around a sealing surface. And here opening up the compression on the shock, both high and low-speed compression can settle it right down. Second, it's been basically the same bike since 2005. 74 yamaha ty-80, good runner--$475. Compression Test Results(YZ125) Whats up guys. You have to add crankcase compression to the compression ratio of the cylinder. Here are some data on the relationship between compression ratio and compression. Price: $228. 2005 Yamaha YZ 125 pictures, prices, information, and specifications. Features may include: Engine Two-Stroke Power Amazingly compact 124cc reed-valve-inducted two-stroke helps produce an awesome power-to-weight ratio. It is designed to fit between the handlebar and the top of the fork tube. Mint 2005 Aluminum frame Yamaha YZ 125 Lightly used No racing New Factory Connection rebuilt front struts and main shock ($850!) New neck steering bearings and lower linkage bearings New Tire and tubes New air filter FMF Racing exhaust Good compression Good chain and sprocket No Rips. Made with nickel-carbide coating, and ported to factory "Works" specs for 2-stroke motorcycles. 2020 Yamaha YZ125X First Look: GNCC Racing Motorcycle The resurgence of two-stroke off-road motorcycles continues with the 2020 Yamaha YZ125X. It carries a full line of New & Used Motorcycles, SidexSides, ATVs & PWCs, they sell Yamaha ATV's, Watercraft, Motorcycles & Generators as well as Star motorcycles. High-Compression Pistons work equally well on stock or modified motors with the same results, more power at every rpm. Suspension is an area Yamaha motocross motorcycles have really shined the last several years, and the 2018 Yamaha YZ125 has a KYB SSS (Speed Sensitive System) front fork, along with a KYB shock that has includes low- and high-speed compression damping adjustability. 14 foot-pounds of torque. 2018 KTM 300 XC-W. The YZ125X's rake is kicked out nearly a degree from the YZ125, and there is 0. Athena Parts P400485200001 Complete Original Cylinder Head Kit (YAMAHA YZ 125 LC OEM) $161. Enjoy the YZ125 experience now and ascend to a higher level. The 1998 YZ 125 is powered by a two-stroke liquid-cooled, single-carburetor 124cc engine. I don't know what is wrong, i suspect maybe carby, what do yous think?, please help. The minimum in any one cylinder should not be less than 70% of the highest cylinder. 5mm Cooling: Liquid Compression Ratio: 8. YZ125(V) Motorcycle pdf manual download. 00mm Single wave disc; Hydraulic Single Piston. We carry the latest Polaris, Kawasaki, Suzuki, Kawasaki, Yamaha, Honda, Cfmoto and Husqvarna models, including Motorcycles, ATVs, Side x Sides, Slingshots and more. Operation of a two-stroke engine. IDEAL BALANCE: A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class. Small bore (71mm) and long stroke(82mm) make a tall piston crown necessary to produce high compression. Ideal Balance: A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class. a win-win for all the true moto fans out there. But I’ve taken into consideration the high octane fuel I’ve used is not a great option for 2 strokes as it has a high detonation therefore works better under higher compression, which means unburnt fuel and oil fouling the plug. Dirtbikes) submitted 1 year ago by tburke40 '99 YZ125 I posted an issue with my bike from a few weeks ago where I wasn't able to kickstart it, but that ended up being because I wasn't allowing the float bowl enough time to fill up with gas. Retarding the timing will make the power band smoother in the mid-range and give more top end over rev. Riding the 2001 YZ125 back-to-back with most other 125s will have you convinced the YZ has a broader, easier to use, powerband, with decent peak horsepower that remains "hooked up". 73mm bore and 59. Suspension Setup Tips. Read Comments. Specifications DIMENSIONS Overall length 2135 mm / 84,1 in Overall width. The YZ125 may be the lowest-priced bike in its class, but, as the Yamaha sales department has found out, most hardcore YZ125 racers buy used YZ125s and rebuild the engines for under $250. Phathead Racing is proud to offer high quality CNC machined from billet, performance 2-stroke heads at the very best prices. 2010 Yamaha YZ125 Motorcycle Specification & Prices Information 2010 Yamaha YZ125 is the latest vehicle for the type of Yamaha Off-Road engine capacity of 125cc, liquid-cooled, 2-stroke, reed-valve Inducted, Single-Cylinder making it much lighter, faster, flexible, agile in all battlefield. 94 mm big bore cylinder. This is the Highly Detailed factory service repair manual for the2008 YAMAHA YZ125(X)/X1, this Service Manual has detailed illustrations as well as step by step instructions,It is 100 percents complete and intact. Inventory Unit Detail Cheyenne Motorsports Cheyenne, WY (307) 632-3171. The most reliable motocross bikes I’ve owned, and they’re just so much fun to ride. Do not allow your tool to make any contact with the free-piston stem. The use of the word "Yamaha" or any specific model designation is purely for informational purposes to assist users of this site and in no way indicate any endorsement by or approval of this site by Yamaha Motor Corporation. Buyers Guide. The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs and gripper seat. To be sure there is a technical means of calculating the mechanical compression ratio, but more commonly a compression gauge reading is used to choose a safe ratio. 2006 yz125 with stock compression running 110 leaded 32:1 with yahamalube 2r. The most reliable motocross bikes I've owned, and they're just so much fun to ride. The YZ125 is the perfect choice for riders moving up onto a big wheel, or for riders who just want to experience the scalpel like qualities of motocross at the precision end of the scale. newbie here. Search 2017 Yamaha YZ125 motorcycles, find motorcycle news, motorcycle insurance and finance, motorbike valuations and motorbike classifieds relating to motorbike today. You name it and its in here. The ability to turn in on a 20c coin and stick like glue to a line you didn't even think existed really opens up your mind as you look to find the most creative way. 4 inches of travel, separate adjusters for high- and low-speed compression damping, and a full lock oil rebound system for increased comfort. Clymer Manuals 35,191 views. Also for: Yz125. /Rebound) or 1/4 – 1/2 turn at a time (HS Comp. One of the strokes is the compression stroke, where the engine compresses a cylinder-full of air and gas into a much smaller volume before igniting it with a spark plug. • Tin coated inner steel inner tubes available as option parts. Taneharu Noguchi was a Yamaha GP Racer turned team manager, and later factory-authorized performance parts manufacturer. 4 inches of travel, separate adjusters for high- and low-speed compression damping, and a full lock oil. Remove the spark plug and spray some penetrating lubricant like PB Blaster, Liquid Wrench, or something similar into the cylinder. 2 power multiplied by Atmospheric Pressure. For 2015 we have re-designed the YZ125's bodywork to provide a more modern and aggressive appearance; among other changes. 03 Yz125 Low Compression plz help If this is your first visit, be sure to check out the FAQ by clicking the link above. Below is the information on the 2005 Yamaha YZ 125. after spending hours on the playstation everyday having absolutely no interest in anything in the garage, i brought it upon myself to buy 4 vintage dirtbikes/enduros to. well its been a long time since ive been on a dirt bike, and i picked up a 1999 YZ125 and putting some TLC and some maintenance into it. I have recently bought a second hand 2004 YZ125 It rockets along!!! when its working It seems every time I go for a ride the spark plug fouls with oil, now i run my bike on a 32,1 (Recommended) fuel oil premix ratio but there is way way to much smoke coming out of the exhaust!. *deposit taken* 2005 Yamaha yz125 *p/X to clear* excellent condition for year with a massive host of upgrades & a mega crisp motor tonnes of compression, £2,295 2005. I looking at the 2006 or newer YZ125 and 250s. Service Repair Manual will supply you with practical and complete information guides. But I've taken into consideration the high octane fuel I've used is not a great option for 2 strokes as it has a high detonation therefore works better under higher compression, which means unburnt fuel and oil fouling the plug. 2018 KTM 450 EXC-F Six Days. We turned the compression clicker out from 10 (stock) to 15. Yamaha YZ125 Wrenh Rabbit Kit Part Number WR101-081 ($514. The front was a different story. they are specifically written for the do-it-yourself-er as well as the experienced mechanic. Below is the information on the 2006 Yamaha YZ 125. Ideal Balance A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class. i tore down the top end and everything was in great shape only had 19 hours on piston and rings, but the rings stuck because the power valve came. Low compression on my yz 125. The YZ125 is the perfect choice for riders moving up onto a big wheel, or for riders who just want to experience the scalpel like qualities of motocross at the precision end of the scale. 30 USD Quantity. RACE-READY FEATURES: The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs and gripper seat. 75 yamaha dt-250 parting. For this weeks GP's Classic Steel we are going to take a look back at the 1996 Yamaha YZ125. View comments, questions and answers at the 2004 Yamaha YZ 125 discussion group. The head can be resurfaced to remove material which will increase compression. 14 foot-pounds of torque. To be sure there is a technical means of calculating the mechanical compression ratio, but more commonly a compression gauge reading is used to choose a safe ratio. The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, 2-position adjustable handlebar clamp, wide foot pegs, gripper seat and adjustable clutch lever with works-style cable adjuster. 2010 Yamaha YZ125 Motorcycle Specification & Prices Information 2010 Yamaha YZ125 is the latest vehicle for the type of Yamaha Off-Road engine capacity of 125cc, liquid-cooled, 2-stroke, reed-valve Inducted, Single-Cylinder making it much lighter, faster, flexible, agile in all battlefield. Read Comments. The use of the word "Yamaha" or any specific model designation is purely for informational purposes to assist users of this site and in no way indicate any endorsement by or approval of this site by Yamaha Motor Corporation. Honda XR250R single, 9. The rearward-slanted cylinder houses a higher compression piston with low friction rings attached to a longer connecting rod. A typical engine might have a compression ratio of 8-to-1. Call or text 2two9-7two6-4nine01 for more info. Ideal Balance A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class. 2006 yz125 with stock compression running 110 leaded 32:1 with yahamalube 2r. Blueprint: Calculate deck height, squish clearance, trapped volume, port timing and compression ratio and list on your perminant Spec-Sheet. Next, we focus on. 7 psi, we have the following:. 94 mm big bore cylinder. well its been a long time since ive been on a dirt bike, and i picked up a 1999 YZ125 and putting some TLC and some maintenance into it. Race-Ready Features: The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs and gripper seat. Complete set of nitride coated or chrome-plated piston rings. Enjoy the YZ125 experience now and ascend to a higher level. 2019 Yamaha YZ125 AGILITY, ABILITY, VICTORY Light weight, but heavy on the fun factor. Re: compression for a yz125 yeah i kinda got that going now it's realy the only way to ride it on trails. Wiseco Dirt Bike Forged Pistons & Performance Parts Wiseco has been involved in Dirt Bike & Motorcross racing since it's beginning and is still going strong by providing reliable race proven parts that offer better than OEM performance at a reasonable price. TROUBLE SHOOTING. Share on Facebook Tweet on Twitter Pin on. YAMAHA YZ125. The coolant is drawn into the combustion chamber on the down-stroke of the piston. With a scored piston and cylinder, there wouldn't be enough compression to start the engine. Athena put forward three different versions of cylinder kits: 50cc Original, 70cc Sport, 70cc Racing. compression and spark but wont start It has compression and spark but wont start before when it was running it back - Yamaha YZ 125 question Search Fixya Press enter to search. 2008-2009 YZ 125/450F Compression Adjuster Assembly Yamaha 2008-2009 YZ 125/450F Please note that all images used in this website are for illustration purposes only and the actual product may differ in size, shape, colour, texture or features. My main concern. Huge stocks, worldwide shipping from Japan. If you have questions regarding products. Today my 1985 yamaha yz125 lost compression and cut off. The first thing we'll look at is the high-speed compression adjuster. Get it as soon as Wed, Sep 25. By using a Pro Circuit High-Compression Piston you will gain both low-end torque and top-end power. Ideal Balance: A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class. You can sign up for e-mail notifications when other riders answer you. 00mm Single wave disc; Hydraulic Single Piston. 1979 yamaha yz125 wont start please help My dad has brought home his old dirt bike from when he was a kid. Compression: 12. great site you have. Compression: 12. It is a holdout from. GNCC®-Tuned YZ125 Power Based on the legendary 125cc liquid-cooled, reed-valve-inducted YZ two-stroke engine, the YZ125X utilizes a revised compression ratio, Yamaha Power Valve System (YPVS) timing, and a model-specific CDI unit—all focused on creating broad power delivery that suits off-road terrain and a wide range of rider skill levels. RACE-READY FEATURES: The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs and gripper seat. The all new '82 RM250Z was an advanced machine, fitted with a water-cooled Full Reed with dual radiators. Looking for YAMAHA Parts & Accessories? Rocky Mountain ATV/MC has you covered! Check out our Parts & Accessories for YAMAHA machines!. Get the latest Specifications for Yamaha YZ 125 2003 Motorcycle from mbike. Genuine parts give 1998 Yamaha YZ125 YZ125K1 owners the ability to repair or restore a broken down or damaged machine back to the condition it first appeared in on the showroom floor. For this weeks GP's Classic Steel we are going to take a look back at the 1996 Yamaha YZ125. It needed more power, longer suspension and better damping to compete with the class top dog, RM125. See prices, photos and find dealers near you. 5mm Cooling: Liquid Compression Ratio: 8. 2018 KTM 450 EXC-F Six Days. hi everyone, new to the board. Swingarm, Single KYB shock absorber, Titanium shock spring, Hi/Low speed compression damping adjustment. As the riding season rapidly approaches, most riders are looking to get their …. Ring Set part # TTR125 2000-02 11:1 Compression. The all new '82 RM250Z was an advanced machine, fitted with a water-cooled Full Reed with dual radiators. Next, we focus on. This means Low-Speed Rebound Damping can be set for excellent traction while keeping the compression nice and firm. Piston kits are sold complete with rings, wrist pins and circlips. Any suggestions on proper jetting, Im new to two strokes so jetting is not my strong suit. If a cylinder has low compression, inject approximately 15 ml (one tablespoon) of engine oil into the combustion chamber through the spark plug hole, recheck the compression and record the reading. It features a 1. Trouble Shooting. TROUBLE SHOOTING. So today’s fill with standard octane fuel 95 with a premix of 50:1 instead of 40:1. Work slowly and protect any sharp edges. Instant download of the factory repair manual for the 2006 Yamaha YZ125 two-stroke bike. Using an open ended spanner, turn the nut clockwise or anti-clockwise to make changes (it makes no clicking noise). OEM is an acronym for original equipment manufacturer, which means that the 1998 Yamaha YZ125 YZ125K1 OEM parts offered at BikeBandit. One of the strokes is the compression stroke, where the engine compresses a cylinder-full of air and gas into a much smaller volume before igniting it with a spark plug. I'm not sure if this is normal because this is my first two stroke. DOWNLOAD HERE. So today's fill with standard octane fuel 95 with a premix of 50:1 instead of 40:1. 2008 YAMAHA YZ125(X)/X1 Service Repair Workshop Manual provides step-by-step instructions. How much power do they give and is it worth the cost. Service Repair Manual will supply you with practical and complete information guides. I might take it to the track and dunes for kicks once in a while. High-Compression Pistons work equally well on stock or modified motors with the same results, more power at every rpm. The YZ125 2-stroke benefits from a range of features that have come straight from our latest YZ-F 4-stroke models. Phathead Racing is proud to offer high quality CNC machined from billet, performance 2-stroke heads at the very best prices. If Yamaha built totally updated YZ125 and YZ250 two-strokes, they would give Yamaha two-stroke riders a reason to buy new. Where required, Government first registration fee and Vehicle Excise Duty is excluded and will be charged additionally at the prevailing rate. Installing the Athena Factory Cylinder Kit on your bike makes it truly race ready and able to compete with the best of the best.