Kawasaki KX85-II - 2021 Specifications and Reviews

The 2021 Kawasaki KX85-II is a lightweight two-stroke motocross bike engineered for young riders and junior competitors. Powered by an 84cc liquid-cooled engine with a piston reed valve design, it delivers sharp throttle response and nimble handling. Known for its proven reliability and competitive performance in youth motocross racing, it offers an ideal platform for developing fundamental riding skills.

Not Rated stars Average rating: Not Rated from 0 votes
.

General information

CategoryCross / motocross
Year2021
ModelKawasaki KX85-II
 
 

Engine and Transmission Specifications

ClutchWet multi-disc, manual
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
Lubrication systemPetrol mix
IgnitionDigital CDI
Fuel systemCarburettor. Keihin PWX28
Bore x Stroke48.5 x 45.8 mm (1.9 x 1.8 inches)
Compression10.9:1
Engine detailsPiston reed valve
Engine typeSingle cylinder, two-stroke
Capacity:84.0 ccm (5.13 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Diameter220 mm (8.7 inches)
Front brakesSingle disc. Dual-piston
Rear tire90/100-16
Front tire70/100-19
Rear wheel travel275 mm (10.8 inches)
Rear SuspensionBottom-Link Uni-Trak with adjustable preload, 24-way compression and 21-way rebound damping
Front wheel travel275 mm (10.8 inches)
Front Suspension36 mm inverted telescopic fork with 20-way compression damping
Trail108 mm (4.3 inches)
Frame typePerimeter, high-tensile steel
 
 

Physical measures and capacities

Fuel capacity5.00 litres (1.32 US gallons)
Wheelbase1310 mm (51.6 inches)
Ground clearance330 mm (13.0 inches)
Overall width765 mm (30.1 inches)
Overall length1920 mm (75.6 inches)
Overall height1150 mm (45.3 inches)
Seat height870 mm (34.3 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc77.0 kg (169.8 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterKick
Color optionsLime Green

Performance Profile & Rider Fit

Best For

Track40%
City5%
Cornering60%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a small-wheel motocross machine built for younger or lighter riders progressing through junior competition, not a full-size adult bike.
PurposeIt exists purely for motocross track riding and racing, delivering quick two-stroke power in a compact, lightweight package.
Rider FitIts low seat height and very light 77 kg weight make it manageable for smaller or younger riders, but it is undersized and cramped for a full-grown adult.
CharacterSharp, revvy, and eager two-stroke character with immediate throttle response and a chassis tuned for tight, flickable handling on rough terrain.
Not Ideal ForIt is not suitable for road use, commuting, touring, carrying a passenger, or for taller/heavier adult riders seeking a full-size machine.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 Kawasaki KX85-II Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 870mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with tip-toe one foot on the 2021 Kawasaki KX85-II, with a cramped knee angle of around 75 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

Find bikes that fit your height →

Rider Reviews

Total comments: 1
64x64

MotorcycleDB Review

The 2021 Kawasaki KX85-II is a top-notch off-road motorcycle for young riders. Equipped with a liquid-cooled 85cc two-stroke engine, this bike delivers excellent power and performance. Its lightweight chassis and adjustable suspension make it easy to handle, giving riders confidence to take on rough terrain. The KX85-II also features disc brakes for reliable stopping power, ensuring a safe and thrilling riding experience. With its aggressive styling and race-ready features, the 2021 Kawasaki KX85-II is a fantastic choice for young motocross enthusiasts. Overall, the 2021 Kawasaki KX85-II is a fantastic off-road motorcycle for young riders who are eager to hit the trails. Its powerful engine, responsive handling, and reliable braking system make it a top contender in its class. With its sleek design and championship-winning pedigree, the KX85-II is sure to provide endless excitement for young riders looking to conquer the off-road. Whether they're hitting the track or exploring the trails, this bike is built to deliver thrills and performance.
Reply

Add a Comment


Please Login or Register if you would like to leave a comment.