Description DEF Racing Stage 2 Valve Train Package: This kit includes a custom camshaft, oversized 1mm high flow valves, and a premium Kibblewhite valve spring kit. The cam and oversize valves work exceptionally well together, providing low-end to peak power gains! Built to withstand rigorous racing conditions, this comprehensive package is already winning vintage races around town. Camshaft core is included; no core return required nor accepted Product Features: Camshaft: Upgrades the cam to a needle roller bearing on the journal where it rests in the head. Hard-welded from a new OEM Honda core and precisely ground on a CNC machine. Cam Specifications: Exhaust: Max Lift .371″, Duration @ .005″ 274° Intake: Max Lift .373″, Duration @ .005″ 275° Steel Exhaust Valve: Increased diameter to 26mm ( 1.0 mm larger) Valve Stem Size: OEM size of 5.5mm, ensuring compatibility Steel Intake Valve: Increased diameter to 31mm ( 1.0 mm larger) Valve Stem Size: OEM size of 5.5mm, ensuring compatibility Material: Made in the USA from high-quality steel for strength and longevity Compatibility: Cam timing was engineered specifically to prevent interference of the larger valves during overlap No head or valve cover modifications needed Works with standard seats and guides; however, seats must be machined 1mm larger to fit the oversized valves Durability: Engineered with a proven design that minimizes stress on the valve train, ensuring longevity and safeguarding against failures for a reliable performance For best results, pair this valve train package with a properly ported head to unlock its full potential. Related