Speedmaster Chevy GM LS1 1.8 Ratio DNA Aluminum Roller Rocker Arms Set

The Speedmaster Chevy GM LS1 1.8 Ratio DNA Aluminum Roller Rocker Arms Set (MPN 1-261-011) is a precision engine component designed to enhance valve actuation and performance in LS1-powered vehicles. These aluminum roller rocker arms deliver reliable, consistent operation while reducing friction at the valve train for improved engine efficiency and responsiveness.

Built from durable aluminum construction with DNA technology, this rocker arm set is engineered to provide smooth, reliable performance in LS1 applications. The 1.8 ratio design is calibrated specifically for LS1 compatibility, ensuring proper valve lift and timing geometry. Ideal for both street and performance engine builds, this set offers the quality and precision that Speedmaster is known for in aftermarket engine components.

Key Features & Benefits

• LS1 Compatible: Specifically engineered for Chevy and GM LS1 engine platforms.
• 1.8 Ratio Design: Optimized rocker arm ratio for LS1 valve train geometry and performance.
• Aluminum Construction: Lightweight yet durable aluminum build reduces weight while maintaining structural integrity.
• DNA Technology: Premium DNA construction ensures reliability and consistent valve actuation.
• Roller Design: Roller-equipped arms reduce friction and wear on cam lobes and valve stems.

Specifications

Ideal Applications

• LS1 engine performance rebuilds and upgrades
• Street performance and modified LS1 builds
• Engine restoration and valve train maintenance
• Competition and high-performance LS1 applications