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Motocross Bikes

2012Kawasaki KX 85-I Monster Energy

★ 4.2
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The 2012 Kawasaki KX 85-I Monster Energy is a lightweight, entry-level motocross machine designed for young and developing riders. Known for its aggressive styling and reliable kick-start engine, it delivers accessible performance on both track and trail with responsive handling thanks to its compact dimensions and minimal weight of 69 kg.

Capacity
84.0 ccm
Engine
Single, two-stroke
Gearbox
6-speed
Wet weight
69.0 kg
Seat height
841 mm
Power
Not on record
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How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 35Agility 92Comfort 25Off-road 95Touring 5Road manners 15
Off-road & trail95%
Cornering80%
City riding5%
Daily riding5%
Touring5%
Two-up0%
Track60%
Best for
Purpose-built for closed-course motocross racing and off-road training, not for any form of street or general leisure riding.
Built for
A sharp, eager two-stroke racer that rewards momentum-carrying, aggressive riding style with quick direction changes and light, flickable handling.
Not ideal for
This bike is not suitable for adult commuting, highway travel, passengers, or riders seeking comfort and low-maintenance ownership.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 841mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with balls of both feet on the 2012 Kawasaki KX 85-I Monster Energy, with a cramped knee angle of around 70 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 821-900 mm — Long Legs →

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Full specifications

Engine
Capacity
84.0 ccm
Engine type
Single, two-stroke
Bore x stroke
48.5 x 45.8 mm
Compression
10.0:1
Cooling system
Liquid
Fuel system
Carburettor
Starting
Kick
Power
Not on record - add it
Transmission
Gearbox
6-speed
Transmission type
Manual
Final drive
Chain
Dimensions & weight
Wheelbase
1255 mm
Overall length
1821 mm
Overall width
734 mm
Overall height
1054 mm
Seat height
841 mm
Wet weight
69.0 kg
Fuel capacity
5.70 litres
Ground clearance
340 mm
Dry weight
Not on record - add it
Chassis & suspension
Frame
High-tensile steel perimeter design with subframe member
Front suspension
36mm inverted telescopic cartridge fork with 18 position compression damping adjustment/ 10.8 in.
Rear suspension
UNI-TRAK single shock system with 4 position compression and 20 position damping adjustment plus adjustable spring preload/ 10.8 in.
Front wheel travel
275 mm
Rear wheel travel
275 mm
Rake (fork angle)
27.0°
Trail
89 mm
Brakes & wheels
Front brakes
Single disc. Hydraulic
Front brakes diameter
220 mm
Rear brakes
Single disc
Rear brakes diameter
184 mm
Front tyre
70/100-17
Rear tyre
90/100-14
Other
Color options
Green

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

Rider Reviews

4.2
★★★★☆
Rider rating

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Common questions

What is the engine size of the Kawasaki KX 85-I Monster Energy?

The 2012 Kawasaki KX 85-I Monster Energy has a Capacity of 84.0 ccm (5.13 cubic inches).

How many gears does the Kawasaki KX 85-I Monster Energy have?

The 2012 Kawasaki KX 85-I Monster Energy has a Gearbox of 6-speed.

How much does the Kawasaki KX 85-I Monster Energy weigh?

The 2012 Kawasaki KX 85-I Monster Energy has a Wet weight of 69.0 kg (152.1 pounds).

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