Motocross Bikes
2021Kawasaki KX100
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The 2021 Kawasaki KX100 is a lightweight 99cc two-stroke motocross machine engineered for young riders and beginners entering competitive off-road racing. Its nimble handling, powered by a liquid-cooled single-cylinder engine and high-tensile steel perimeter frame, delivers predictable performance on varied terrain. The KX100 is renowned for offering an accessible platform that balances power delivery with rideability for developing rider skills.
- Capacity
- 99.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 68.0 kg
- Seat height
- 871 mm
- Power
- Not on record
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What’s new for the 2021 Kawasaki KX100
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Front suspension | 36mm inverted telescopic cartridge fork with 18-way compression damping / 10.8 in. | 36mm inverted telescopic cartridge fork with 20-way compression damping / 10.8 in. |
| Rear suspension | UNI-TRAK® single shock system with 4-way compression and 18-way rebound damping plus adjustable spring preload / 10.8 in. | Uni-Trak® gas charged shock with piggyback reservoir with 24-way compression and 21-way rebound damping plus adjustable spring preload |
| Front brakes | Single disc. Two-piston calipers | Single disc. Petal disc with dual-piston caliper |
| Rear brakes | Single disc | Single disc. Petal disc with single-piston caliper |
Other years
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Purpose-built for closed-course motocross and off-road track riding rather than any form of street use.
- Built for
- A nimble, high-revving two-stroke motocrosser that rewards aggressive throttle and clutch work with sharp, flickable handling on rough terrain.
- Not ideal for
- Not suitable for highway travel, commuting, carrying a passenger, or riders seeking comfort and long-distance touring capability.
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 usEngine
- Capacity
- 99.0 ccm
- Engine type
- Single, two-stroke
- Bore x stroke
- 52.5 x 45.8 mm
- Compression
- 10.2:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- CDI with digital advanceI
- Lubrication system
- Premix
- Power
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet multi-plate
Dimensions & weight
- Wheelbase
- 1311 mm
- Overall length
- 1946 mm
- Overall width
- 765 mm
- Overall height
- 1151 mm
- Seat height
- 871 mm
- Dry weight
- 68.0 kg
- Wet weight
- 77.0 kg
- Fuel capacity
- 5.00 litres
- Ground clearance
- 330 mm
Chassis & suspension
- Frame
- High-tensile steel perimeter design with subframe member
- Front suspension
- 36mm inverted telescopic cartridge fork with 20-way compression damping / 10.8 in.
- Rear suspension
- Uni-Trak® gas charged shock with piggyback reservoir with 24-way compression and 21-way rebound damping plus adjustable spring preload
- Front wheel travel
- 274 mm
- Rear wheel travel
- 274 mm
- Rake (fork angle)
- 29.0°
- Trail
- 109 mm
Brakes & wheels
- Front brakes
- Single disc. Petal disc with dual-piston caliper
- Front brakes diameter
- 220 mm
- Rear brakes
- Single disc. Petal disc with single-piston caliper
- Rear brakes diameter
- 240 mm
- Front tyre
- 70/100-19
- Rear tyre
- 90/90-16
Other
- Color options
- Lime green
Specs last verified against published sources: .
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2005 | 2009 | 2014 | 2018 | 2021 | 2022 |
|---|---|---|---|---|---|---|
| Capacity | 99 cc | 99 cc | 99 cc | 100 cc | 99 cc | 99 cc |
| Dry weight | 68 kg | 68 kg | 68 kg | 68 kg | 68 kg | 68 kg |
| Seat height | 871 mm | 871 mm | 871 mm | 871 mm | 871 mm | 871 mm |
| Fuel capacity | 5.7 L | 5.7 L | 5.7 L | 5.7 L | 5 L | 5 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Kawasaki KX100?
The 2021 Kawasaki KX100 has a Capacity of 99.0 ccm (6.04 cubic inches).
How many gears does the Kawasaki KX100 have?
The 2021 Kawasaki KX100 has a Gearbox of 6-speed.
How much does the Kawasaki KX100 weigh?
The 2021 Kawasaki KX100 has a Dry weight of 68.0 kg (149.9 pounds).
Shop this bike
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The 2021 Kawasaki KX100 is a powerful and reliable off-road motorcycle that is perfect for riders looking for a high-performance bike. With a lightweight frame and impressive suspension, this bike offers nimble handling and superior control on a variety of terrains. The 99cc liquid-cooled two-stroke engine delivers strong and smooth power, making it ideal for riders of all skill levels. Whether you're hitting the trails or racing on the track, the KX100 is a top choice for those seeking a thrilling off-road experience.
Overall, the 2021 Kawasaki KX100 is a standout motorcycle in its class, offering exceptional performance and agility. Its sleek design and advanced features make it a top choice for off-road enthusiasts. If you're in the market for a high-quality and powerful off-road bike, the KX100 is definitely worth considering.
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