We designed the KX100 from the ground up for teenage chargers who are between the mini 85s and full-size 250s. Its 19-inch front and 16-inch rear wheels are sized just right for adolescent racers and its generous 275mm of front and rear wheel travel is widely tuneable to let your inner-race shine.
With shipment Shipment Name 2 for $0.00



Bore and stroke52.5 x 45.8 mm
Fuel systemKeihin PWK28 carburetor
Type2-stroke, Single with KIPS
Induction2-petal carbon-fibre piston reed valve
Compression ratio10.2 (low speed), 8.7 (high speed)
CoolingLiquid, twin radiators
LubricationPetrol mix (32:1), 2-stroke racing oil


Rear: calipersSingle-piston caliper
Rear: typeSingle 184 mm disc
Front: calipersDual-piston caliper
Front: typeSingle 220 mm disc


Seat height870 mm (34.3 in.)
Ground clearance330 mm (15.0 in.)
Wheelbase1,310 mm (50.8 in.)
Overall height1,150 mm (43.5 in.)
Fuel capacity5 litres (1.21 gal.)
Overall width765 mm (28.9 in.)
Curb mass**77 kg (157 lbs.)
Overall length1,920 mm (75.2 in.)


Primary reduction ratio3.400 (68/20)
Gear ratio: 5th1.090 (24/22)
Final driveChain
Gear ratio: 4th1.250 (25/20)
Transmission6-speed, constant mesh, return shift
Gear ratio: 3rd1.500 (27/18)
ClutchWet multi-disc
Gear ratio: 2nd1.875 (30/16)
Final reduction ratio3.923 (51/13)
Gear ratio: 1st2.538 (33/13)
Gear ratio: 6th0.956 (22/23)


Tire: front70/100-19
Steering angle (left/right)45° / 45°
Wheel travel: front275 mm (10.8 in.)
Trail108 mm (4.1 in.)
TypeTubular single cradle, high tensile steel perimeter
Caster (rake)29°
Tire: rear90/100-16
Wheel travel: rear275 mm (10.8 in.)


Suspension, rearUni-Trak single-shock system with 24-way compression and 21-way rebound damping, plus adjustable spring preload
Suspension, front36 mm inverted telescopic cartridge fork with 20-way compression damping
Years 2015, 2014, 2013