SBC Ultra Pro Magnum XD R/A's - 1.5 7/16

The SBC Ultra Pro Magnum XD R/A's - 1.5 7/16 is a high-performance roller rocker arm designed for small-block Chevrolet engines. Engine builders and hot rodders seeking reliability and precision under extreme valve train loads will find this product essential for their builds. This rocker arm is engineered to deliver consistent performance, making it suitable for various applications from street performance to competition-level engines.

Featuring a 1.5 ratio and a 7/16-inch stud configuration, the SBC Ultra Pro Magnum XD R/A's optimize mechanical advantage and load distribution. The hardened steel construction ensures durability, while precision needle bearings minimize friction, extending the lifespan of the components. This design guarantees consistent rocker geometry throughout the valve opening event, which is crucial for reliable valve timing and improved combustion dynamics.

Ideal for engine builders upgrading small-block Chevrolet platforms, these rocker arms are compatible with aggressive cam profiles and high-lift cylinder heads. The SBC Ultra Pro Magnum XD R/A's are built to handle increased RPM capabilities, making them a valuable addition for those looking to unlock the full potential of their engines.