Roller Pin & Circlip Kit

The Roller Pin & Circlip Kit provides essential replacement hardware for high-performance valvetrain systems utilizing Yella Terra rocker arms. Designed for enthusiasts and professional engine builders, this kit ensures that the roller bearing within the rocker arm remains securely positioned during high-RPM operation. Maintaining the integrity of these small components is critical for preventing catastrophic engine failure caused by hardware migration or fatigue. This kit serves as a direct replacement to maintain factory-level tolerances in aftermarket rocker setups.

Constructed from high-strength steel, the Roller Pin & Circlip Kit is engineered to withstand the extreme thermal and mechanical stresses found in modern performance cylinder heads. The precision-machined pin provides a smooth, durable surface for the bearing rollers, while the included snap rings offer positive retention within the rocker body. By utilizing these specialized steel components, users ensure consistent valve lift and reduced friction across the entire powerband. The hardened surface of the pin is specifically designed to resist galling and premature wear under heavy spring pressures.

This Roller Pin & Circlip Kit is specifically designed for Yella Terra rocker arm assemblies, making it a vital component for those performing routine maintenance or rebuilding a valvetrain. Its compact dimensions and lightweight profile ensure that it does not add unnecessary reciprocating mass to the assembly, preserving the engine's ability to rev freely. Whether you are upgrading a street machine or maintaining a dedicated track vehicle, this kit offers the exact specifications required for a secure and reliable installation. Proper installation of these components helps maintain the precise geometry required for optimal horsepower and torque.