Engineered for the Chevy GM LS1 platform, the Speedmaster DNA® Stainless Steel Shaft Mount Roller Rocker Arms (PN 1-261-034) deliver a performance-focused 1.7 rocker ratio to maximize valve lift and improve overall engine breathing. The shaft-mount design provides a stable, consistent geometry that reduces deflection under high-RPM conditions, while the stainless steel construction offers excellent strength and long-term durability.
The precision roller tip minimizes friction at the valve stem interface, helping to reduce wear and improve throttle response across the RPM range. Whether you're building a street performance or track-focused LS1 application, these rocker arms are a direct upgrade over stock components and are designed to work with the factory shaft-mount architecture of the LS1 cylinder head.
