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Found 104 results

  1. ox715

    Yamaha YZ250X (2020)

    0 comments

  2. 0 reviews

    THE ULTIMATE 2‑STROKE OFF‑ROAD RACER. The ultimate 2‑stroke off‑road racing machine built to win X‑Country races. Top Features Stunning Two-Stroke Power, Tuned for Cross-Country and Hare Scrambles Racing The YZ250X is optimized for the unique demands of Hare Scrambles and GNCC® racing. The YPVS™-equipped 249cc two-stroke engine is combined with a wide-ratio five-speed transmission for the ultimate cross-country power plant. Motocross-Derived Aluminum Frame Ultra-lightweight YZ250-spec frame features carefully engineered combination of aluminum castings, forgings and extrusions for the perfect balance of rigidity and flex, with industry-leading fully adjustable, KYB® speed sensitive spring-type suspension tested and tuned specifically for the needs of cross-country racers. Racing Style and Ergonomics The YZ250X carries the racing heritage of the YZ250 motocrosser with aggressive styling from front fender to the rear brake protector, and is ready to race out of the crate, complete with an aluminum tapered handlebar, YZ-F-style foot pegs, gripper seat, and off-road specific Dunlop® tires. GNCC-Specific features 18-inch rear wheel, sealed O-ring chain, wide ratio transmission, narrow expansion chamber, off-road focused tires and suspension settings, a standard side stand and fuel tank petcock with reserve position. 270mm Front Brake Large 270mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, with exceptional stopping power and controllability. Engine GNCC-Tuned YZ250 Power Based on the legendary YZ250 249cc liquid-cooled reed-valve-inducted two-stroke engine, the YZ250X utilizes a revised compression ratio, exhaust port timing, revised Yamaha Power Valve System (YPVS) timing, and a model-specific CDI unit—all focused on creating a wide, controllable power character ideal for cross-country racing. Revised Power Valve The YZ250X features the patented Yamaha Power Valve System—with broader opening timing compared to the YZ250 for smoother power—to combine bottom-end acceleration with strong midrange and eye-opening top-end. Narrow Exhaust Pipe Unique compact exhaust expansion chamber is designed especially for the YZ250X, improving both horizontal and vertical clearance on tight, technical trails, while still providing excellent exhaust efficiency. Advanced Carburetor 38mm Keihin® PWK carburetor with throttle position sensor provides precise fuel/air mixing and crisp throttle response throughout the powerband. Racing Intake System Specially designed carbon fiber reed-valve petals improve throttle response and engine performance across the entire rpm range. Wide-Ratio Gearing Smooth-shifting, five-speed, wide-ratio transmission ensures proper gearing from tight woods sections to wide-open fire roads. YZ250 Cooling System Large-capacity radiator features a ten-row core with four louvers for maximum cooling efficiency. Digital Ignition Digital CDI ignition system delivers precise spark for faster, stronger response anywhere in the powerband, specifically tuned for the needs of the YZ250X. Chassis/Suspension YZ250-Based Frame A carefully engineered aluminum frame and swingarm give the YZ250X the famous handling proven by the championship winning YZ250 motocross machine on tracks around the world. Lightweight Subframe Removable aluminum rear subframe is constructed of square-section tubing for reduced weight. 270mm Front Brake Large 270mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, with exceptional stopping power and controllability. Industry-Leading KYB® Fork Industry-leading, fully adjustable KYB® spring-type fork with speed sensitive damping uses piston speed to control damping force for super-precise handling and a smooth ride, with minimal wasted stroke or abrupt shocks for the rider—all tuned for the demands of cross-country racing. Smooth KYB® Shock Rear, fully adjustable KYB® shock features 12.4 inches of travel, separate adjusters for high- and low-speed compression damping, and a full lock oil rebound system for increased comfort, control and fantastic rear wheel traction. Enduro-Specific Wheels and Tires Cross-country-spec Dunlop® Geomax AT81 tires front and rear are ready to head straight to the races. An 18-inch rear tire has a taller sidewall to improve comfort and reduce pinch flats. Additional Features Cross-Country Ergonomics A racy "gripper" type seat and narrow fuel tank combine with a tapered aluminum handlebar and adjustable mounts to create greater freedom of movement and more comfortable ergonomics for riders. Cross-Country Features Off-road focused tires with an 18” rear wheel, wide-ratio gearing, a standard side stand, sealed O-ring chain and a reserve fuel petcock.
  3. 0 comments

    I’ve had a lot of bikes over the years, but none that I would give up the 250X for. Great bike to follow the kids around, but still be able to rip when I want to.
  4. 0 comments

    great
  5. 0 comments

    Bad ass..."..
  6. N8ster

    Yamaha YZ250X (2016)

    0 comments

    This bike works great! I purchased it in March 2016. It will be used for off-road racing and general play riding. Power comes on hard, right off the idle. Suspension is valved pretty close to where I would like it. Only a few clicks on the forks to make it work. The wide ratio transmission compliments the package well. I thought I would remove the kick stand but it works well and stays in place.
  7. TMX

    Yamaha YZ250X (2016)

    0 comments

    After approximately 2 month owning this bike (as of May 15 2016), my review is simply this: It is inconceivable to me that a better offroad chassis exists anywhere in the known universe. Just point and commit, this incredible machine will take it from there. For those who don't know me, this review is from a guy who generally can and does find fault with absolutely anything and everything.
  8. 0 comments

    Super smooth and fast. Awesome motor / suspension harmony
  9. 0 comments

    It's a yz , what do you expect! Gooooddie
  10. I want to buy a clutch cover for my 2018 YAMAHA YZ 250X. What do buddies suggest to me? Which is the most resistant and beauty? https://www.ebay.com/itm/Boyesen-Clutch-Right-Side-Crankcase-Crank-Case-Cover-Yamaha-YZ250-YZ-250-X-99-18/192766151573?fits=Model%3AYZ250&epid=171142106&hash=item2ce1c20b95:g:gIQAAOSwlx9cHRIg http://www.boyesen.com/works-billet-factory-racing-clutch-covers-4.html https://hinsonracing.com/product/billetproof-clutch-cover-yamaha-yz250x-2016/ https://www.motosport.com/gytr-billet-clutch-cover?variant[GYT0017]=GYT0017-X001-Y007 https://www.ebay.com/itm/Tusk-Billet-Aluminum-Clutch-Cover-Black-YAMAHA-YZ250-YZ250X-2001-2019-yz-250-/173746044311 Other suggestions? Thanks.
  11. I'm new to the forums and I've been trying to read the few but super long 250x forums on here, and have been having a hard time sifting through off topic debates and mostly trail based reviews, which I was happy to see were very good. I want a new bike as I'm done with using a motocross bike offroad and need opinions on how the yz250x compares to a 450's ability to go fast in wide open desert and go up steep, deep sand hills? (I live in SoCal and ride almost everywhere but Superstition Mountain is my favorite place to ride). In a drag race how would the 250x do compared to a 450? I know it wont be nearly the same, but I'd like to know how far off it will be, and just dont have anything else to compare to. I want to make the switch because I miss the fun braaaapp of the yz125 i learned to ride on and feel I will have more fun desert racing in the 250 division. However... i love my 450 and need to be persuaded not to get a yz450fx which rn am feeling would be the safer choice because I'm scared the 250fx will feel too slow and untorquey by comparison. I realize the 2 stroke vs 4 stroke debate is basically unanswerable and in a perfect world imo everyone should have both. But, I need comparisons to 450s because I am 18 and in my 7 years of riding experience almost all of it has been on my 2012 yz450f, the only bike I've owned. I've ridden many other bikes for short periods but never a 250 2 stroke (a lot of the good reviews were based off these). thanks in advance for any help
  12. Hi Im a 14 year old and have been wanting a new bike for the last year, I currently have a CRF150f and want more power. I have ridden my friends crf230f and liked the power difference between a 150. His dad said I should skip the 230 stage an go for a 250. I have looked at all the different types and only really want a yamaha or a Honda. Preferably I would go for a Honda. I don't want a race bike, but want something nearly as fast to compete with friends. I don't necessarily want a road legal bike but would probably be helpful in future. What would be the best option between these bikes: Crf250x, Crf230f,Wr250f. The next thing is price, and as Im 14, I don't pay for myself but I do make money through music and will end up paying half. I have heard that the wr250f is great but it costs nearly $3000 dollars more than my first choice the Honda Crf250x. Just want peoples opinions, Thanks alot! http://powersports.honda.com/Model/trail/2017/crf250x.aspx There is also the 2 stroke yz250x but im pretty sure I want a 4 stroke. Not doing any real racing just with friends and on the farm, so may travel slowly for some time, would this be a problem? Thanks This post has been promoted to a wiki
  13. Do you think my yz 250x would work good with a r-304 shorty? maybe give it some low end and make it sound a little better? any info would be great if it works good or not. or if i should just stick to my fmf turbine core 2.
  14. So I'm looking at buying one of these here in the next couple months to replace my '13 450XC-F. I've got some concerns though about power and most importantly bottom/mid power. Just wondering if there are some folks here who have jumped from a 450 to this bike and found it to be enough and what mods can be done to increase the power in that range. I've heard of Eric Gorr and going with his 300 kit and was reading about some STIC device for the carb that supposedly increases bottom/mid power. Sure I could also get a FMF gnarly pipe but in my experience those really rob from the top end a lot and even some mid. I've also had several KTM 300s in the past and those were great but I want something with a better suspension to start out with and would love to jump back on a Yami...
  15. Posted Today, 11:26 PM #1 Beta 300rr vs YZ250x: post #1 I need a new bike. I have modded 05 YZ250 and a lot of the parts will swap to a new 250x. Beta 300rr has some things going for it but it's heavier by nearly 20 lbs. has anybody ridden both. I would save a ton on a 250x and also be able to swap my high end accessories. I will race this new bike also in my local enduro circuit. I ride on average about 30 mile loops 3-4 times a week in high desert mostly technical trails. I know the Beta suspension isn't close to the YZ250x so it will need attention. Inrealize the Beta will cost more but what accessories are mandatory. My Scott's damper will transfer with a kit.
  16. 0 comments

  17. 1 review

    Cross country and enduro racing have been experiencing increased popularity and growth. Based on the legendary YZ250 two-stroke, the X model has been developed using all of Yamaha’s extensive two-stroke knowledge to produce a high-level cross country performer. The YZ250X is a lightweight, compact machine that is both exciting to ride and affordable to own and maintain. PERFORMANCE The YZ250X is a super light weight package that offers serious two-stroke power. The engineers modified the cylinder head, adjusted the compression ratio, revised the exhaust port timing and changed the gear ratios in the 5-speed transmission to better suit cross country racing (vs. the base YZ250). The YZ250X engine offers a good depth of power with an easy-to-use engine character. THE EXTRAS Cross-country-focused chassis features include softer suspension settings front and rear, an 18-inch rear wheel for more puncture resistance, an aluminum side stand and a fuel petcock that offers a reserve position for peace of mind (vs. YZ250). KEY FEATURES The YZ250X is based on the YZ250 2-stroke with the following additional features that enhance its competitiveness for cross country racing / riding. “Re-tuned” engine Vs. YZ250 (head, ignition, porting & YPVS) Wider ratio transmission gears Vs. YZ250 (3rd gear & higher) Heavy duty clutch Expansion chamber shape Unique front & rear suspension settings 18″ rear wheel Aluminum side stand On-off-reserve fuel petcock DETAILS Slim design, aggressive bodywork allows easy rider movements Lightweight YZ250F/450F based wide footpegs provide excellent grip & ground clearance Rugged chain guide helps prevent the chain from de-railing and also helps to protect the rear sprocket. Serrated rear brake lever and folding shift lever tip Stainless steel, inner clutch cable provides excellent strength, smooth action and long life Heavy-duty 520 “O” ring chain E10 friendly fuel system components Engine Engine Type 249cc liquid-cooled 2-stroke; reed-valve inducted Bore x Stroke 66.4mm × 72.0mm Compression Ratio 7.9~9.4:1 Fuel Delivery Keihin® PWK38S Ignition CDI Transmission Constant-mesh 5-speed; multiplate wet clutch Final Drive Chain Suspension / Front KYB® Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel Suspension / Rear KYB® single shock; fully adjustable, 12.4-in travel Brakes / Front Hydraulic disc, 270mm Brakes / Rear Hydraulic disc, 245mm Tires / Front 90/90-21 Dunlop® AT81F Tires / Rear 110/100-18 Dunlop® AT81 L x W x H 86.0 in x 32.5 in x 50.8 in Seat Height 38.2 in Wheelbase 58.5 in Rake (Caster Angle) 27.7° Trail 4.8 in Ground Clearance 14.2 in Fuel Capacity 2.1 gal Wet Weight 229 lb Warranty 30 Day (Limited Factory Warranty) Color Team Yamaha Blue
  18. 0 comments

  19. 2019 250x- Running vforce3 with PC platinum and r-304. I have an apex head installed with squish at .045. Running C23 race gas mixed 50/50 with 90 non ethanol netting about 105 octane. Premix of 44:1 with Amsoil Dominator. Current conditions: 50 degrees at 800' elevation. PV mod has been done, removing the washer. Using NECJ-2 with 42 pilot and the bike has gobs and gobs of power up until 3/4 throttle. I've used everything from a 175 main to a 160 main and the bike continues to bog at 3/4 to WOT. I see a lot of guys on here with NECJ experience maybe someone can offer assistance as to what's going on. I looked through articles and it's conflicting and as well I haven't really come across a bike with the same or similar setup in the same environment. I'm a woods rider so I don't use WOT often except when I got an open field I need it.
  20. Can someone explain squish in a way I can understand? I need to send my cyclender and head in. What squish should I get? I was going to do stock then people said do ". 050" What's the disadvantage or advantage? That's what I really want to know. All I want is very reliable trail bike. Also only run 91 octain, no race fuel.
  21. Picked up a new 2016 Yamaha YZ250X the other week. When this model was announced I was somewhat curious. I've owned a few YZ250's and the thought of one tuned for off road riding was intriguing. I'm a vet intermediate rider about 6' 2" tall and 195 lbs in street clothes. I've ridden the bike on a few of my favorite off road loops and thought I'd share my observations. The suspension settings on this bike are simple fantastic out of the box. The fork is plush and the bottoming resistance is excellent. I slowed the rebound on the shock down 2 clicks and it feels perfect. There is no harshness in the suspension. The chassis feels very balanced and the tires stay connected to the ground. The shock and fork use some stroke on the MX track but the standard settings were rideable for me. Faster and heavier guys might want to stiffen things up but the suspension is simply excellent out of the box for most riders, especially off road. The ergos are typical of a YZ250 - a little compact. Bummed this bike did not get the (2) position rubber mounted handlebar clamps from the YZ-F's which would provide a few more ride position options. The vibration level is acceptable though it could have been even less with rubber mounted handlebar clamps. I have some MSR footpegs that are 1/2" farther back (this should help open up the ergo package a little - have not installed them yet). The seat is perfect - nice foam and grip. The front brake has good power and is easy to modulate - even though it is the standard size rotor (another part that could have been upgraded to the latest YZ-F design). The off road focus is easy to feel in the engine. Low to mid is smooth and strong and just when you expect that typical 250 hit when the power valve opens it never arrives - just linear pull. For off road this makes the bike easier to ride and find traction. Jetting seems a touch rich in the mid but temperatures are falling quickly here in Ohio so I have not changed anything yet. Other YZ250X owners please chime in with any jetting changes that improved the bike. I have a +1T bigger rear sprocket to try - mostly so I can get into 3rd more often as I like short shifting on this bike since there is such good low to mid power. The stock gearing seems very good as the engine can lug pretty low with no stalling. For super tight riding maybe +1T would be better. The silencer has no spark arrestor but is pretty quiet. I've been riding a lot of 4-strokes lately and it takes a few corners to get used to the quickness of the YZ250X. The YZX is light and feels light in motion and responds quickly to any inputs. The Dunlop AT81 tires have a soft overall feel. The rear works pretty good everywhere while the front is OK except in dry hard pack with loose dirt on top. Some people might overlook the YZ250X since it does not have e-start or 6-speed but I think Yamaha is onto to something here. Simple, lightweight, focused off road engine and suspension settings all add up to a surprisingly effective off road bike. Nice to have this option! Maybe the sleeper off road bike for 2016? A few pics.....
  22. Has anyone run this chain before? Sunline SL1 Works Chain, non o ring gold plated, brand new I bought this chain a few years back at a swap meet and thought I would use it with a new set of sprockets on my 19 YZ250X, I am curious because I have always ran DID and I dont want to tighten the chain before every ride! Thanks!
  23. I wanna hear from you guys that have ridden a yz250x because Im thinking about getting one. How does the yz250x compare to the motocross yz250? I have had the motocross version and just sold my ktm200xc because it felt anemic and I missed the hit. the ktm200 couldn't even power wheelie under its own weight. Is the yz250x close to the motocross version in power? how does it compare to a KTM 300? thanks guys
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