2007 Yamaha YZ85 (discontinued)

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Product Yamaha YZ85
Model Year 2007
Engine Size 85cc
Engine Type Liquid-cooled, Two-Stroke, reed valve
Engine Displacement 84.7cc
Bore x Stroke 47.5 x 47.8mm
Compression Ratio 8.2:1
Fuel System PWK28 x 1
Ignition CDI
Transmission Constant mesh 6-speed/wet, multiple-disc coil spring
Final Drive Chain Drive
Suspension Front Telescopic Fork, coil spring/oil damper, 10.8" travel
Suspension Rear Swingarm (link, suspension), coil spring/gas-oil damper, 11.1" travel
Brakes Front Hydraulic single disc brake, 198mm
Brakes Rear Hydraulic single disc brake, 146mm
Tires Front 70/100-17-40M
Tires Rear 90/100-14-49M
Overall Length 71.7"
Overall Width 29.8"
Overall Height 45.7"
Seat Height 34"
Wheelbase 49.5"
Ground Clearance 13.8"
Fuel Capacity 1.3 gal.
Curb Weight 146 lb.
Miscellaneous Key Features:
  • Liquid-cooled, 85cc crankcase reed-valve inducted six-speed is light, compact and designed to deliver hard-hitting, moto-winning power throughout the RPM range.
  • Ultra-rigid twin-spar frame is lightweight and strong for sharp handling.
  • Fully adjustable suspension allows a broad adjustment range to suit everybody from rank Novice to Mini Expert.


  • 85cc liquid-cooled, crankcase reed value inducted, two-stroke engine inhales through a 28mm Keihin flat-slide carburetor; seamless throttle response across the powerband is the result.
  • Digital CDI ignition system puts out a more precise spark and monitors engine speed to ensure optimal timing for quicker, stronger response during hard acceleration.
  • Smooth-shifting, six-speed close ratio transmission with heavy-duty, multiplate clutch delivers maximum hook-up for outstanding acceleration and corner-exiting power.
  • Involute spline set-up in clutch means smoother shifting under power with great durability at competition-level usage.
  • Clutch cover features a sub-cover for easy access during maintenance.
  • Gearbox features a shift shaft for smoother shifting feel with no spring friction.
  • Lightweight radiator has large cores and louvers and water pump features a cast aluminum (vs. resin) impeller for maximum cooling efficiency.
  • Lightweight exhaust system design helps create a broader powerband with stronger low-end punch.
  • Airbox design ensures greater air cleaning performance and easier maintenance.
  • Primary kickstarting allows starting in any gear.


  • Rear subframe is removable to allow easy maintenance.
  • Lightweight 36mm inverted Kayaba cartridge fork features 10.8 inches of travel with compression and rebound damping adjustability, and low-friction outer tubes and internals.
  • Rear suspension features fully adjustable Kayaba link-type shock with 11.3 inches of travel and race-tested compression damping valving.
  • 220mm front disc and 190mm rear disc brakes with stainless steel rotors and competition-spec pads deliver strong, precise stopping power.
  • Lightweight 17-inch front and 14-inch rear rims are durable and reduce unsprung weight for optimal suspension performance.
  • Dunlop knobbies for great traction on a variety of tracks and terrain.

Additional Features:

  • Wide handlebar and flat fuel tank, radiator shrouds, side panels and rear fender provide rider with leverage and freedom of movement and weight transfer.
  • Cleated rear brake pedal and folding shift lever tip provide great grip and excellent durability.
  • Wide, footpegs are cleated to provide superb comfort, grip and ground clearance.
  • Separate clutch cover with transmission oil filler opening makes for easy maintenance.
  • Fuel tank cap is wider-diameter for easier usage and large tank opening ensures fast, hassle-free refueling.
  • Repackable exhaust silencer.
  • Durable, comfortable handlebar grips.
  • Stainless steel clutch cable ensures longer life.
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