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 MOTOCROSS : KX85 (BIG AND SMALL-WHEEL VERSIONS)

There’s a point when a young rider’s physical growth and developing skill on the race track demands a motorcycle that can do more than keep up with their competitive nature – they need a bike that can power them to the front of the pack. The Kawasaki KX™85 provides that leading-edge of power and performance.

The KX85’s liquid-cooled, two-stroke, single-cylinder 84cc engine churns out an abundance of race-winning power. It’s equipped with high-tech features, such as an Electrofusion-coated cylinder with a narrow squish band and large volume to enhance top-end power. A machined finish to the bridges between the intake and exhaust ports helps prevent seizure and improves engine reliability.

Fuel delivery for the engine is provided by a 28mm carburetor that features a crescent-slide to position the needle closer to the intake ports. A Kawasaki Integrated Power-valve System (KIPS®) and exhaust pipe capped with a KX250-style muffler contribute to the KX85’s tractable powerband, which provides control for riders of varying skill levels.

A smooth-shifting six-speed transmission, hard chrome-finished shift fork ends, a thick base on the clutch basket housing and an additional bushing on the input shaft for extra durability are all features that make the KX85 shine.

The KX85 stands above the competition with its advanced chassis. It utilizes a high-tensile steel perimeter frame, and a specially designed gas tank sits inside the frame, lowering the fuel load and center of gravity for improved handling – yet another design borrowed from the bigger KX motorcycles.

Long-travel suspension at both ends helps to smooth out the roughest course for riders of every size and skill level. The 36mm inverted cartridge front fork has the capability of 18-way compression damping adjustment. Out back, the spring preload, compression and rebound damping are all adjustable on the UNI-TRAK? rear suspension system.

THE KAWASAKI KX85 IS AVAILABLE IN SMALL AND BIG-WHEEL VERSIONS.

Specifications

ENGINE


 

Type

Liquid-cooled, 2-stroke Single with KIPS

Displacement

84cm 3

Bore and Stroke

48.5 x 45.8 mm

Compression ratio

Low Speed: 10.0:1

Induction

High speed: 9.2:1

Fuel system

2-petal carbon-fibre piston reed valve

Ignition

Carburettor: Keihin PWK 28

Starting

Digital CDI

Lubrication

Primary kick

DRIVETRAIN


 

Transmission

6-speed, return

Final drive

Chain

Primary reduction ratio

3.400 (68/20)

Gear ratios: 1st

2.538 (33/13)

2nd

1.875 (30/16)

3rd

1.500 (27/18)

4th

1.250 (25/20)

5th

1.090 (24/22)

6th

0.956 (22/23)

Final reduction ratio

3.923 (51/13) (3.571 [50/14] for KX85A)

Clutch

Wet multi-disc, manual

FRAME


 

Type

Perimeter, high-tensile steel

Wheel travel: front

275 mm

rear

275 mm

Tyre : front

70/100-19 42M (70/100-17 40M for KX85A)

rear

90/100-16 52M (90/100-14 49M for KX85A)

Caster (rake)

27 °

Trail

103 mm (89 mm for KX85A)

Steering angle (left/right)

45 ° / 45 °

SUSPENSION


 

Front: Type

36 mm upside-down telescopic fork

Compression damping

18-way

Rear: Type

Bottom-Link Uni-Trak

Compression damping

4-way

Rebound damping

16-way

Spring preload

Fully adjustable

BRAKES


 

Front: Type

Single 220 mm disc

Caliper

Dual-piston

Rear: Type

Single 184 mm disc

Caliper

Single-piston

DIMENSIONS


 

Overall length

1,910 mm (1,820 mm for KX85A)

Overall width

735 mm

Overall height

1,105 mm (1,055 mm for KX85A)

Wheelbase

1,290 mm (1,255 mm for KX85A)

Ground clearance

380 mm (340 mm for KX85A)

Seat height

870 mm (840 mm for KX85A)

Dry weight

68 kg (65 kg for KX85A)

Fuel capacity

5.5 litres

PERFORMANCE


 

Maximum power

21.0 kW {28.5 PS}/ 12,000 rpm

Maximum torque

17.2 N·m {1.75 kgf·m}/ 11,000 rpm

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