Racing Spring Kit, Titanium, 0.385 Lift, Various Honda® Applications

Honda CRF 250R 2004-2007
Honda CRF 250X 2004-2015

Honda 04-07 CRF250R, 04-15 CRF250X HIGH LIFT Racing Valve Chrome Silicon Springs, Titanium Retainers, H.T. Steel lower Collars. SEALS Kit.
Kibblewhite # 30-31300

INTAKE , 0.385 Valve Lift OK 50# Seat Pressure 154lb. @ .363 lift
EXHAUST , 0.385 Valve Lift OK 50# Seat Pressure 154lb. @ .363 lift

Since 1939, KPMI® has taken great pride in our ability to design innovative performance improvements for valvetrains. This innovative ability has never been more apparent than with the development of the  high tech lightweight racing valve spring kits  for the incredibly stressed and torturous environment in today's  high revving 4-stroke engines.
The challenge to engineer a valvetrain that would outperform OEM systems, that in some cases included titanium components, was not an easy one. This task would require the concentrated efforts of every member of KPMI®'s design team. It was apparent early on that an OEM style spring with a bit more pressure was not going to be the complete answer for these engines. Working together as a team enabled KPMI® to evolve with a  unified system  approach. In fact, these  innovative high performance lightweight valve spring kits,  would not only outperform factory parts, but outlive them as well.
Each KPMI® spring kit is designed for its specific application, taking into account several critical parameters including; cam profiles, harmonics, natural frequency of the springs, valvetrain mass, required pressure, wire stress, fatigue life, and engine rpm, just to name a few!
Today KPMI® proudly offers  complete high performance lightweight valve spring kits  for a host of applications.

Part No. 65-711 (Off Road Only Ltd.)