Standard Features
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NEW YZ250 2-Stroke.

Revive memories of the good ol' days with a YZ two-stroke! Nothing beats the "bark," and instanteous throttle response of the lightweight YZ250. Not only is a two-stroke more affordable and easier to maintain, they also provide a very entertaining ride. D30702 Stock ya Frt/pdi $695 + doc $195 and up . Yz yz250 2stroke rm250 cr250


Model Year
YZ250 (2-Stroke)
Retail Price
Yamaha Racing Blue
Stock Number
Additional Pricing Info
+ $695 Freight & PDI + documentation $195 and up


86 in. (2,185 mm)
50.8 in. (1,290 mm)
32.5 in. (825 mm)
227 lbs. (103 kg) wet
Ground Clearance
14.2 in. (360 mm)
58.5 in. (1,485 mm)
Seat Height
38.2 in. (970 mm)


2-stroke, reed-valve, single
15 ci
Bore x Stroke
66.4 x 72 mm
Compression Ratio
8.9 ~ 10.6:1
Fuel System
Keihin PWK38S
Fuel Tank Capacity
1.8 imp. gal. (8 l)


Final Drive
Gear Ratio
1st: 1.929 (27/14)
2nd: 1.533 (23/15)
3rd: 1.278 (23/18)
4th: 1.091 (24/22)
5th: 0.952 (20/21)


Front: 270 mm floating disc / twin-piston
Rear: 245 mm disc / single-piston
Front: 80/100-21
Rear: 110/90-19


Front: Adjustable 48 mm inverted fork; 11.8 in. (300 mm) travel
Rear: Fully adjustable link Monocross; 12.4 in. (315 mm) travel

Standard Features

Key Improvements for 2017
 Larger 270 mm front disc brake with wave-style rotor & twin piston caliper  
Key Features
 Compact, liquid-cooled, 249 cc, piston-reed-valve-inducted, 2-stroke engine  
 Smooth shifting, 6-speed, close ratio transmission  
 Keihin PWK38S carb with 4-petal carbon fiber reeds  
 Yamaha”s patented YPVS exhaust power valve system  
 Lightweight, aluminum, semi-double-cradle frame with detachable rear subframe  
 Fully adjustable KYB suspension  
 Adjustable aluminum handlebar & titanium foot pegs  
 Aggressive, modern styling  
 Lightweight, compact, liquid-cooled, 249 cc, piston-reed-valve-inducted, 2-stroke.  
    Super crisp, instant “right now” engine power (when in the “power band”)  
    Easy & economical to maintain, service & rebuild  
 Lightweight, flat top forged aluminum piston.  
    Excellent durability  
    Light weight means fast engine response  
 Liner-less, ceramic composite cylinder bore with ceramic coating sprayed directly on the aluminum block.  
    Excellent heat dissipation  
    Reduced weight (no heavy iron liner)  
    Reduced friction  
    Extended cylinder life  
 Lightweight, ball bearing style crank.  
    Lightweight design for fast throttle response  
    Friction reducing crank seals  
 YPVS power valve system features a total of three slides (one main and two auxiliary slides).  
    YPVS system varies the exhaust port height & timing based on engine rpm  
    Provides the benefits of both solid, low rpm power delivery & strong top-end punch  
 Keihin PWK38S carburetor with power jet and throttle position sensor (TPS).  
    Precise fuel - air mixing  
    Extra-crisp throttle response throughout the powerband  
 Special-design, 4-petal, carbon fiber reeds.  
    Excellent throttle response & engine performance across the entire RPM range  
 Smooth-shifting, 5-speed, close-ratio transmission.  
    Ratios are matched to engine output for maximum performance  
    Optimal hook-up for outstanding acceleration & corner-exiting power  
    Transmission features “involute splines” for smooth, positive shifting even under power  
 Heavy-duty, multi-plate clutch.  
    Quick-access, outer clutch cover allows for fast, easy clutch maintenance  
 CD (capacitor discharge) ignition system.  
    Delivers a precise spark for fast, sure starts  
    Ensures optimal timing at all rpms for fast, strong response  
 High capacity, washable, dual-stage, foam air filter.  
    Excellent filtering qualities  
    Reduces maintenance costs... Foam filter is re-useable  
 Large-capacity, dual radiators feature 10-row cores.  
    Maximum cooling efficiency  
 Lightweight exhaust system.  
    Computer designed expansion chamber provides maximum engine performance  
    Lightweight, aluminum silencer is re-buildable for optimum performance & reduced noise levels  
 Works-style clutch lever & race-spec “barrel adjuster.”  
    Light, easy lever pull  
    For on-the-fly clutch adjustments  
Chassis / Suspension
 Lightweight, aluminum, semi-double-cradle frame.  
    Combines with compact engine to provide an awesome power to weight ratio  
    Obvious benefit of an aluminum frame is a significant weight reduction  
    Yamaha maintains the semi-double cradle design because it offers an excellent “rigidity balance” between lateral & torsional rigidity while offering controlled flex in the longitudinal plane  
    Result is a light aluminum frame, which provides excellent handling, good ride quality, excellent stability & responsive cornering performance  
 Removable rear subframe.  
    Constructed of square-section, lightweight aluminum  
    Detachable design allows easy access when servicing rear suspension components  
    Reduces costs in the event of a loop out  
 Lightweight, tapered design aluminum swingarm.  
    Produced by “hydro forming”, a forming method that uses high pressure water to form shapes  
    Excellent rear wheel traction & control  
    Lightweight design  
 Cast aluminum upper and forged lower triple clamps.  
    Strong yet lightweight  
    Fast, agile handling  
 Adjustable handlebar mounts.  
    Allow handlebar to be moved 10 mm rearward if desired  
 “Speed Sensitive System” 48 mm, adjustable, inverted, “twin chamber” KYB fork. Front wheel travel is 300 mm (11.8 in.).  
    Twin chamber design means the damper unit is in a separate structure which prevents aerated fork oil from entering the inner damper assembly & degrading its damping abilities  
    The inner damper is pressurized, it also eliminates bubbles forming in the oil  
    “Speed Sensitive” design means the damping force is controlled by piston speed, not position in the fork  
    Low friction fork seals provide reduced stiction for a smoother stroke  
    Fork adjustments include: 20-way compression damping & 20-way rebound damping  
    Optional fork springs are available through Genuine Yamaha parts  
 Fork also features a Transfer Control Valve (TCV).  
    TCV enhances damping from mid to full stroke & improves bottoming characteristics  
    TCV offers more precise control throughout the full suspension stroke  
    TCV is located on the upside of the spring & its function is controlled by piston speed, not piston position, hence the term “Speed Sensitive System fork”  
 Large “wrap-around” plastic fork protectors.  
    Provide excellent protection from dirt, mud & stone chips  
    “Self-supporting” design reduces friction for smoother stroke  
 Monocross link rear suspension features a fully adjustable, Kayaba, piggyback shock which provides 315 mm (12.4 in.) of wheel travel.  
    Features separate adjusters for high- and low-speed compression damping  
    Adjustments include: spring preload, 20-way rebound damping, 20-way low-speed compression damping & 2 turns of high speed compression damping  
    Damper rod is 18 mm in diameter  
    Kashima coating (friction reducer) is used in the shock body & sub tank to reduce friction & improve suspension performance  
    Piggyback shock utilizes a full rebound oil lock system for excellent suspension function & great ride quality  
 New, larger 270 mm floating front “wave-style” disc brake with Nissin twin piston caliper.  
    “Wave” style rotor (disc) reduces weight, improves cooling (more surface area) & improves styling  
    Braking performance is excellent with great feel & control  
 “Shorty” front brake lever is adjustable for various hand sizes.  
    245 mm rear “wave-style” disc brake with single piston caliper.  
    Integrated master cylinder (fluid reservoir is integrated into the top of the master cylinder)  
    “Wave” style rotor (disc) reduces weight, improves cooling (more surface area) & improves styling  
    Strong stopping power with excellent feel & control  
 Rugged, plastic rear caliper & lower rear disc protectors / guards.  
 Lightweight, Sun Star rear sprocket.  
    Increases the contact area between the sprocket & chain rollers  
    Reduces the load on the chain & increases service life of chain & sprocket  
 Lightweight, D.I.D. 21 in. front and 19 in. rear rims & premium Dunlop tires.  
    Provide excellent durability  
    Reduces unsprung weight for optimal suspension performance & handling  
 “Flat-design” seat features multi density foam.  
    Provides good initial softness / comfort and then increases the firmness as more pressure is applied  
    “Pebble” finish on the top and side surfaces provides excellent rider grip & durability  
 Seat, handlebar & fuel tank ergonomics provide excellent freedom of movement for the rider.  
 Slim design, modern 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 chain  
 E10 friendly fuel system components  

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