Standard Features
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Gitty Up

The YZ85 is ready to race right out of the crate with features like a super potent 85 cc, crankcase reed-valve 2-stroke power plant, a rigid single backbone frame and adjustable suspension. Join the "Blue Team" and get ready to fill your trophy case.Plus fr/pdi and applicable taxes. Licensing is extra


Model Year
YZ85 (2-Stroke)
Yamaha Blue


71.7 in. (1,821 mm)
44.3 in. (1,126 mm)
29.8 in. (758 mm)
157 lbs. (71 kg) wet
Ground Clearance
13.8 in. (351 mm)
49.5 in. (1,257 mm)
Seat Height
33.1 in. (841 mm)


2-stroke, crankcase reed-valve, single
85 cc
Bore x Stroke
47.5 x 47.8 mm
Compression Ratio
Fuel System
Keihin PWK28
Fuel Tank Capacity
1.1 imp. gal. (5 l)


Final Drive


Front: 220 mm disc / twin-piston
Rear: 190 mm disc / single-piston
Front: 70/100-17
Rear: 90/100-14


Front: Adjustable 36 mm inverted fork; 10.8 in. (275 mm) travel
Rear: Fully adjustable link Monocross; 11.1 in. (282 mm) travel

Standard Features

 Lightweight, compact, 85 cc, liquid-cooled, crankcase reed-valve inducted, 2-stroke single.  
 Crankcase reed valve induction and 28 mm Keihin flat-slide carburetor ensures seamless throttle response across the powerband.  
 Lightweight, forged piston means less reciprocal mass and less friction for a faster revving engine with excellent durability.  
 CD ignition system provides a hot, precise spark and monitors engine speed to ensure optimal timing for quicker, stronger response during hard acceleration. This is a maintenance-free system.  
 Smooth-shifting, 6-speed transmission with involute splines on main and drive shafts are mated to a heavy-duty, multi-plate clutch delivering maximum hook-up for outstanding acceleration and smooth, positive shifting.  
 Clutch cover features a quick remove sub-cover for fast, easy clutch access.  
 Lightweight radiator with large size cores and special louvers provides maximum cooling efficiency.  
 Washable, dual-stage, foam filter ensures great air filtering performance and easy, economical maintenance.  
 Lightweight exhaust system is specially designed to create a broad powerband with strong low-end punch. The aluminium silencer is re-packable to maintain optimum performance and reduced noise levels.  
Chassis / Suspension
 Rigid, semi-double cradle, single backbone, steel frame is ultra-lightweight and incredibly strong providing minimal flex for razor-sharp, moto-wining handling.  
 Detachable rear subframe allows easy access for suspension maintenance.  
 Lightweight box-section aluminium swingarm provides excellent rigidity for excellent rear wheel control and traction.  
 Lightweight, adjustable 36 mm inverted Kayaba cartridge fork provides 275 mm (10.8 in.) of wheel travel and adjusts for compression and rebound damping. Adjustments include: 20 clicks of both compression and rebound damping. Their construction offers YZ125 / 250 type valving and low-friction seals to ensure a smooth, compliant stroke for superior suspension performance and handling. Optional fork springs are available through Yamaha Genuine Parts and Accessories.  
 Monocross link rear suspension features a fully adjustable Kayaba piggyback shock providing 282 mm (11.1 in.) of wheel travel. The piggyback design helps to keep the shock cool during a long moto to provide fade resistant damping and consistent performance. Adjustments include spring preload, 15 clicks of compression and 20 clicks of rebound damping. Optional shock springs are available through Yamaha Genuine Parts and Accessories.  
 220 mm front stainless steel disc with twin piston caliper delivers strong stopping power with excellent control and great feedback.  
 "Shorty style" adjustable front brake lever can be tailored to fit various hand sizes.  
 Clutch lever holder allows for clutch lever reach adjustment to better suit various hand sizes.  
 190 mm stainless steel rear disc brake is squeezed by a single piston caliper. The caliper is protected by a rugged plastic protector.  
 Lightweight 17 in. front and 14 in. rear DID rims provide excellent durability and help reduce unsprung weight for optimal suspension performance.  
 Modern, aggressive styling.  
 Slim line body design and flat seat provide excellent freedom of movement for the rider. The seat features a pebble finish type seat cover.  
 Sealed tapered steering head bearings for extra durability.  
 Serrated rear brake pedal and folding shift lever tip  
 Wide, cast-alloy serrated footpegs  
 Stainless steel inner clutch cable for longer life and smooth operation  
 Rubber boots on clutch and brake levers help reduce dirt, mud, and water entry for improved durability.  
 Convenient lifting holes in side cover.  
 Rugged chain guide helps prevent chain from de-railing and also protects the rear sprocket.  
 YZ85 large wheel kit (19 / 17 in.) is available through Yamaha Genuine Parts & Accessories.  
 E10 friendly fuel system components  

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