2021 KFX90



Truckloads of fun

The four stroke KFX90 is the ultimate kids thrill machine. Recommended for entertaining kids 12 years and older it will face up to the toughest of dirt challenges, attacking anything riders throw in its path with grunt and charisma.

Just like the smaller KFX50, the KFX90 has aggressive styling and lines mimicking its larger KFX models. The KFX90 features an electric start, beginner friendly CVT transmissions, a full floorboard design which protects feet and legs, single A-arm front suspension, rear swingarm suspension design, chain final drive, fast 89cc engine and throttle limiting screw, allowing parents to limit throttle opening to help new riders gain experience at slower speeds. The KFX90 comes in a new Bright White.

A fun and stable platform to learn the ropes, the KXF90 is perfect for ATV dirt action. Always operate the KFX90 under direct adult supervision.




  • Durable 89 cm³ air cooled overhead cam engine
  • Electric push button starting with kick start backup
  • Continuously variable automatic transmission (CVT)
  • Electrically operated fuel enrichener
  • Throttle limiting screw
  • Front drum brakes and a rear disc brake
  • Wide stance for stable handling
  • Sporty ATV design
  • Steel chassis for durability
  • Centrifugal clutch
  • A-arm front suspension
  • Swingarm rear suspension
  • Chain drive
  • Full floorboards


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KFX90 (KSF90A)

Engine Type Fan cooled, single cylinder
Displacement 90 cm³
Bore X Stroke 47.0 x 51.8 mm
Compression Ratio 10.1:1
Valve System SOHC 2 valve
Fuel System Keihin PTE 16
Ignition Solid state CDI
Starting Electric and kick starter backup
Battery MF, YTX5L-BS, 12V, 4 Ah
Transmission Continuously variable transmission, centrifugal clutch.
Final Drive Chain 2WD
Suspension - front Independent, single A-arm
Suspension - rear Swingarm.
Ground Clearance 100 mm rear axle
Wheel Travel - front 71 mm
Wheel Travel - rear 74 mm
Brakes - front Mechanical drum
Brakes - rear Disc with single piston calliper and mechanical drum parking brake
Wheels size - front 8.0 x 5.5  
Wheel size - rear 8.0 x 7.0
Tyre front 18 x 7-8                                                           
Tyre rear 18 x 9-8
L X W X H 1,425 x 905 x 925 mm
Wheelbase 965 mm
Seat Height 650 mm
Fuel Capacity 5.5 litres
Curb Mass 119 kg (includes full fuel tank and all fluids at optimum levels
Vehicle Maximum Load 85 kg max load rider only
Colour Lime Green
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