2007 Kawasaki KX250F
General Specifications
| Model | Kawasaki KX250F |
| Year | 2007 |
| Category | Motocross |
| Engine Type | 249 cc single-cylinder, four-stroke, DOHC, 4-valve, liquid-cooled |
| Weight | Approximately 92 kg dry |
Engine
| Displacement | 249 cc |
| Bore x Stroke | 77.0 x 53.6 mm |
| Compression Ratio | 13.5:1 |
| Fuel System | Keihin FCR 37 mm flat-slide carburettor | Replacement Options |
| Ignition | Digital CDI |
| Spark Plug | NGK CR8E |
| Spark Plug Gap | 0.7-0.8 mm |
| Cooling System | Liquid-cooled |
| Starting System | Primary kick starter with automatic decompression |
Transmission
| Transmission | 5-speed constant-mesh, return shift |
| Clutch | Wet multi-disc |
| Final Drive | Chain, 520 size |
Dimensions
| Overall Length | Approximately 2,170 mm |
| Overall Width | Approximately 820 mm |
| Overall Height | Approximately 1,270 mm |
| Wheelbase | Approximately 1,470 mm |
| Ground Clearance | Approximately 340 mm |
| Seat Height | Approximately 965 mm |
| Fuel Capacity | Approximately 7.2 L |
Chassis
Suspension
| Front Suspension | 47 mm Showa inverted twin-chamber cartridge fork, adjustable compression and rebound damping | Fork Oil Levels |
| Front Suspension Travel | Approximately 315 mm |
| Rear Suspension | Uni-Trak linkage with Showa gas-charged shock, adjustable spring preload, high/low-speed compression and rebound damping |
| Rear Suspension Travel | Approximately 310 mm |
| Fork Oil | Showa SS-05 or equivalent high-performance fork oil; twin-chamber cartridge fork |
Brakes & Wheels
| Front Brake | Single hydraulic petal disc |
| Rear Brake | Single hydraulic petal disc |
| Front Wheel Size | 21 x 1.60 in |
| Rear Wheel Size | 19 x 1.85 in |
Service Data
| Fuel Type | Premium unleaded petrol |
| Premix Information | Not applicable - four-stroke engine with separate engine lubrication |
| Gearbox Oil | Engine and transmission share the same oil; SAE 10W-40 four-stroke motorcycle oil meeting API SG/SH/SJ and JASO MA specification |
| Air Filter | Washable oiled polyurethane foam element |
| Service Notes | Competition four-stroke motocross engine. Check engine oil frequently and inspect valve clearance, air filter, coolant, drive chain, brakes and controls at competition-service intervals. |
2007 Kawasaki KX250F – Refining Kawasaki’s Aluminium-Framed Four-Stroke
The 2007 Kawasaki KX250F was primarily a refinement of the major redesign introduced for 2006 rather than another new generation. Kawasaki retained the aluminium perimeter frame, compact 249 cc DOHC four-stroke engine and Showa suspension package, while making smaller changes intended to improve power delivery, durability and chassis balance.
The engine continued with a 77.0 x 53.6 mm bore and stroke, four-valve cylinder head and high 13.5:1 compression ratio. Fuel was delivered through a Keihin FCR 37 mm flat-slide carburettor, so jetting, accelerator-pump setup and fuel screw adjustment remained important parts of race preparation. Owners repairing worn or incomplete induction systems can compare replacement carburettor options when the original unit needs attention.
The aluminium perimeter frame introduced the previous year remained central to the KX250F’s character. Kawasaki continued to tune the bike toward sharp steering and strong front-end feel while maintaining stability over braking bumps and rough motocross terrain. The 47 mm Showa twin-chamber fork and Uni-Trak rear suspension offered extensive adjustment for competition use, and the MXOwners fork oil reference is useful when servicing the front suspension.
For owners today, the 2007 KX250F is interesting because it shared Kawasaki showrooms with the final-generation KX250 two-stroke. Riders could still choose between the lightweight, premix-burning 250 two-stroke and the newer high-revving 250 four-stroke. The KX250F represented where the class was heading, while the KX250 represented the closing chapter of Kawasaki’s traditional full-size two-stroke era. Owners rebuilding one can also use the MXOwners Parts Finder when checking replacement components.
