2013 KX250F AT A GLANCE?
Upgraded Showa Separate Function Fork (SFF) provides more progressive damping force and features larger-diameter 48mm inner fork tubes for improved rigidity and less stiction.
Dual injector Digital Fuel Injection system.
More robust high-rpm engine output extends deep into the overrev.
Stronger engine components improve reliability.
DIGITAL FUEL INJECTION (DFI) SYSTEM
Revised intake tract provides a straighter shot into the combustion chamber for more direct airflow from the airbox into the combustion chamber.
Seal between air inlet port and throttle position sensor unit on the 43mm throttle body protects TPS sensor from fuel penetration.
Progressive throttle linkage opens more quickly after 3/8 open position.
Simple and efficient system: No battery, fuses or relays.
2013 KX250F BRAKES
New pushrod type front brake master cylinder and new brake pad material provide stronger brake force and enhanced feel.
New rear brake pad material offers powerful braking performance.
Front and rear petal brake discs help reduce unsprung weight, and the wave shape helps clean the brake pads for more efficient stopping performance.
Rear caliper guard protects caliper from damage.
New high-volume muffler assembly is 30mm shorter with a larger cross section keeps noise levels at 94 dB while retaining power production.
Durable stainless steel construction.
BODYWORK & ERGOS
Bodywork components offer the rider a slim interface, making it easy for racers to feel comfortable and go fast.
Formed using a double-injection molding process, the shrouds offer a slim design.
New smaller side number plates also contribute to the slim package.
Right side panel has an added passageway to help cool the silencer.
Flatter design of the seat and tank offer greater freedom of movement.
Frame is wider at the ankles to offer better grip and narrows near the bend below the seat to allow a slim riding position.
Slim seat features upgraded polyurethane, designed for greater durability.
Seat has a slip-resistant top and side surface for good grip when seated and while standing.
50mm wide (front-to-rear) footpegs offer superb grip and feel at the pegs.
2013 KX250F resonance chamber to help boost low-rpm torque.
2013 KX250F TOP-END PARTS
Revised piston profile helps increase reliability.
Light and strong piston shares same design as the factory racers, and a tin plating to optimize its interface with the nickel plating on the cylinder wall.
Special finish improves surface lubrication and wear resistance.
Short piston pin reduces reciprocating weight.
Stronger intake valve seat material offers increased durability.
Ultra-light valves have extremely thin valve stems on par with those found in supersport machines; intake valves feature thick heads for increased strength.
Special casting method leaves the intake port surfaces extremely smooth for optimum intake efficiency across the rev range.
Silicon-coated head gasket provides excellent sealing.
2013 KX250F UPGRADED SFF FORK
Upgraded 48mm Separate Function Fork (SFF) features new 1mm larger inner fork tubes which allow the internal damping components to be larger, for firmer damping response and increased ride comfort.
SFF design separates springing and damping functions for less weight, better performance, less stiction and easier adjustability.
Super-hard titanium coating on the outer surface of the inner fork tubes reduces stiction and improves suspension action while also helping prevent scratches and tube damage.
Friction-reducing Kashima Coat treatment on the inside of the outer fork tubes contributes to smoother suspension action.
Wrap-around fork tube guards provide excellent protection for the inner tubes.
Revised lower triple clamp open at the back for increased rigidity and improved fork action.