Kawasaki KX 85-I Monster Energy - 2012 Specifications and Reviews

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.

2012
4 stars Average rating: 4 from 5 votes
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General information

CategoryCross / motocross
Year2012
ModelKawasaki KX 85-I Monster Energy
 
 

Engine and Transmission Specifications

Exhaust systemPro-Circuit silencer
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Fuel systemCarburettor. Keihin PWK28
Bore x stroke48.5 x 45.8 mm (1.9 x 1.8 inches)
Compression10.0:1
Engine typeSingle cylinder, two-stroke
Capacity:84.00 ccm (5.13 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter184 mm (7.2 inches)
Rear brakesSingle disc
Front brakes diameter220 mm (8.7 inches)
Front brakesSingle disc. Hydraulic
Rear tyre dimensions90/100-14
Front tyre dimensions70/100-17
Rear suspension travel275 mm (10.8 inches)
Rear suspensionUNI-TRAK single shock system with 4 position compression and 20 position damping adjustment plus adjustable spring preload/ 10.8 in.
Front suspension travel275 mm (10.8 inches)
Front suspension36mm inverted telescopic cartridge fork with 18 position compression damping adjustment/ 10.8 in.
Trail89 mm (3.5 inches)
Rake (fork angle)27.0°
Frame typeHigh-tensile steel perimeter design with subframe member

Physical measures and capacities

Fuel capacity5.68 litres (1.50 gallons)
Wheelbase1,255 mm (49.4 inches)
Ground clearance340 mm (13.4 inches)
Overall width734 mm (28.9 inches)
Overall length1,821 mm (71.7 inches)
Overall height1,054 mm (41.5 inches)
Seat height841 mm (33.1 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc69.0 kg (152.1 pounds)

Other specs

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

Performance Profile & Rider Fit

Best For

Track60%
City5%
Cornering80%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a small-wheel motocross machine built for younger or lighter riders, typically pre-teens to young teens transitioning from an 65-80cc bike toward full-size motocross machinery.
PurposePurpose-built for closed-course motocross racing and off-road training, not for any form of street or general leisure riding.
Rider FitIts tiny 69kg mass and low-ish 841mm seat height make it manageable for smaller, lighter riders, though the high-revving two-stroke demands active clutch and gear work.
CharacterA sharp, eager two-stroke racer that rewards momentum-carrying, aggressive riding style with quick direction changes and light, flickable handling.
Not Ideal ForThis bike is not suitable for adult commuting, highway travel, passengers, or riders seeking comfort and low-maintenance ownership.

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

Rider Fit Visualizer

2012 Kawasaki KX 85-I Monster Energy Rider Ergonomics Assessment

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Feet:

At 841mm, a rider of 175cm with a 79cm (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.

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.

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