KX design philosophy is simple: put mid-level to expert riders on the top step of the podium. The KX250F is one of the most successful machines in the 250cc class. Proven race-winner and potent track weapon in the hands of any serious rider, the KX250F is loaded with advanced technology and industry firsts that push riders to the front of the pack.
With shipment Shipment Name 2 for $0.00



Fuel systemFuel injection: ø43 mm x 1 (Keihin) with dual injection
Type4-stroke, Single
Valve systemDOHC, 4 valves
Compression ratio13.8:1
LubricationForced lubrication (semi-dry sump)
StartingPrimary Kick
Bore and stroke77.0 x 53.6 mm
IgnitionDigital DC-CDI


Rear: typeSingle 240 mm petal disc
Front: calipersDual-piston caliper
Front: typeSingle semi-floating 270 mm petal disc
Rear: calipersSingle-piston caliper


Wheelbase1,475 mm (58.1 in.)
Overall height1,270 mm (50.0 in.)
Fuel capacity6.1 litres (1.3 gal.)
Overall width820 mm (32.3 in.)
Curb mass**106.0 kg (233.7 lbs.)
Overall length2,170 mm (85.4 in.)
Seat height945 mm (37.2 in.)
Ground clearance330 mm (13.0 in.)


Gear ratio: 4th1.235 (21/17)
Transmission5-speed, constant mesh, return shift
Gear ratio: 3rd1.444 (26/18)
Gear ratio: 2nd1.750 (28/16)
ClutchWet multi-disc, manual
Gear ratio: 1st2.142 (30/14)
Final reduction ratio3.846 (50/13)
Primary reduction ratio3.350 (67/20)
Gear ratio: 5th1.045 (23/22)
Final driveChain


Wheel travel: front315 mm (12.4 in.)
Trail126.4 mm (5.0 in.)
TypePerimeter, aluminum
Caster (rake)28.7°
Tire: rear100/90-19
Wheel travel: rear310 mm (12.2 in.)
Tire: front80/100-21
Steering angle (left/right)42° / 42°


Suspension, rearNew Uni-Trak linkage system shock with 19-way low-speed and 4-turn high-speed compression damping, 22-way rebound damping and fully adjustable spring preload
Suspension, front48 mm inverted Separate Function front Fork (SFF) Type 2 with 22-position compression, 20-position rebound damping and 40-position spring preload
Years 2015, 2014, 2013