Racing Spring Kit, Titanium, 0.440" Lift, Honda�, CRF� 450X, 2005-2017

Honda CRF450X 2005 - 2015,

Lightweight Racing Valve Chrome Silicon Springs, Titanium Retainers, H.T. Steel lower Collars. Kit.
Spring Kit, 440 Valve Lift OK,

EXHAUST , 0.440 Valve Lift OK 70# Seat Pressure 183lb. @ .375 lift
INTAKE , 0.440 Valve Lift OK 40# Seat Pressure 130lb. @ .375 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. 65-709 (oro2u.com)

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.