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allows smoother chain travel at high RPM
This allows you to exceed 900hp on E85 and easily over 1000hp on E30 while maintaining consistent fuel control
Available for K20 and K24
All components are 100% Genuine OEM Honda
4P Pro 163 CNC Cylinder Head with Ferrea valves
Ferrea Roller Rocker and Valve Spring Kit KT4038 - K20C1 Valve (Exhaust) allows smoother chain travel atThe Ferrea Roller Rocker kit will eliminate the VTEC function on your exhaust cam, and replace the OEM intake rocker with the Ferrea rocker arm. The Ferrea valve spring kit uses a high quality PAC spring Made in the USA. It increases the seat pressure and open pressure to help control valve bounce and will allow safe operation up to and beyond 9000 rpm. This is especially critical in the event of a missed gear or mechanical over rev. We recommend this
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