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Yamaha YZ85 Motocross Motorcycle

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Categories: Motorcycles & Scooters, Off-Road Motorcycles, Racing Motorcycles

Description
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YZ85

GALLERY

360° VIEW

SPECIFICATIONS

Available from December 2021

ENGINE

Engine Type

85cc liquid-cooled 2-stroke; reed-valve inducted

Bore x Stroke

47.5mm x 47.8mm

Compression Ratio

8.2~9.6:1

Fuel Delivery

Hitachi Astemo® Keihin PWK28 carburetor

Transmission

6-speed; multiplate wet clutch

Final Drive

Chain

CHASSIS

Suspension / Front

Inverted fork; fully adjustable, 10.8-in travel

Suspension / Rear

Single shock; fully adjustable, 11.1-in travel

Brakes / Front

Hydraulic disc, 220mm

Brakes / Rear

Hydraulic disc, 190mm

Tires / Front

70/100-17 Dunlop® Geomax MX3SF

Tires / Rear

90/100-14 Dunlop® Geomax MX3S

DIMENSIONS

L x W x H

71.7 in x 29.9 in x 44.7 in

Seat Height

33.1 in

Wheelbase

49.4 in

Rake (Caster Angle)

26.3°

Trail

3.5 in

Maximum Ground Clearance

12.6 in

Fuel Capacity

1.3 gal

Wet Weight

161 lb

FEATURE BENEFITS

TOP FEATURES

YPVS™ Two-Stroke Power
The 85cc liquid-cooled, two-stroke engine features the Yamaha Power Valve System for increased low- and mid-range power without losing peak power at high rpms—improving rideability and reducing the need for frequent shifting.
Fully-Adjustable Suspension
Lightweight 36mm KYB® inverted cartridge fork features low-friction outer tubes, external compression and rebound damping adjustability, paired with a race-proven fully-adjustable KYB® rear shock. Both offer loads of suspension travel to tackle serious off-road competition.
High-Spec Wheels and Brakes
Stylish blue, lightweight 17-inch front and 14-inch rear rims are durable, reduce unsprung weight for optimal suspension performance, and come wrapped in Dunlop® MX3S tires for exceptional traction. Big 220mm and 190mm disc brakes offer precise control and one-finger stopping power.

ENGINE

Potent YPVS™ Two-Stroke Engine
The 85cc liquid-cooled, two-stroke engine features the Yamaha Power Valve System for broad power across the rev range without losing peak power at high rpms—improving rideability and reducing the need for frequent shifting.
Tuned Crankcase and Intake
The crankcase design features a spacer-style reed valve intake for improved air/fuel flow, which inhales through a 28mm Hitachi Astemo® Keihin flat-slide carburetor for seamless throttle response.
Tuned Expansion Chamber
Carefully matched to suit the YPVS™-equipped engine, the exhaust expansion chamber optimizes gas flow for enhanced power delivery, especially in the low- and mid-range.
Durable Transmission
The transmission features oversized gears to provide enhanced engagement and smoother shifts. Threaded portion of the clutch shaft diameter has also increased from 12mm to 14mm.
High Capacity Radiator
Lightweight radiator has large cores and louvers. Water pump features a cast aluminum (vs. resin) impeller for maximum cooling efficiency.
High-Flow Airbox
Airbox design ensures excellent air filter performance and easy maintenance.

CHASSIS/SUSPENSION

Fully-Adjustable Fork
The lightweight 36mm KYB® inverted cartridge fork features 10.8 inches of travel with compression and rebound damping adjustability. Complete with low-friction outer tubes and internals, the damping settings offer enhanced performance across a range of conditions and rider abilities.
Fully-Adjustable Shock
Rear suspension features fully adjustable KYB® link-type shock with race-tested valving and 11.1 inches of travel. The progressive linkage-type design improves bottoming resistance, allowing racers to charge harder and improve lap times.
Chassis Enhancements
The YZ85 has been enhanced in several key chassis areas to optimize strength and rigidity. Enhancements include the main frame, swingarm and rear wheel axle. The aluminum swingarm was redesigned to refine balance between longitudinal and torsional rigidity for improved handling stability. A new removable rear subframe constructed from lightweight, high-strength aluminum reduces weight.
Large-Diameter Brakes
Big wave-style brake discs offer improved self-cleaning and cooler-running performance. The 220mm front disc and 190mm rear disc deliver strong, precise stopping power.
Lightweight Wheels
Lightweight 17-inch front and 14-inch rear rims are durable and reduce unsprung weight for optimal suspension performance.
High Performance Tires
Dunlop® MX3S tires provide exceptional traction on a variety of tracks and terrain.

ADDITIONAL FEATURES

Adjustable Rider Ergonomics
The four-position adjustable handlebar mounts and taper-style handlebar allow the rider to tune the handlebar position to suit their size and preferences. New flat seat and narrow fuel tank design, along with smoothly integrated body panels and slimmer shroud width, combine to enable greater freedom of movement for increased control and confidence.