Speedmaster DNA® Aluminum Roller Rocker Arms Set 1.7 Ratio LS1 GM Chevy

The Speedmaster DNA® Aluminum Roller Rocker Arms Set is a precision-engineered valve train component designed for Chevy GM LS1 engines. Built with a 1.7 ratio and aluminum construction, this shaft-style rocker arm set delivers reliable valve actuation with reduced friction and wear in high-performance and street applications.

These roller rocker arms improve engine efficiency and responsiveness by minimizing binding and providing consistent valve lift across the RPM range. The aluminum construction keeps weight low while maintaining durability, making this set ideal for LS1 engine builds seeking upgraded valve train performance. The DNA® brand reputation ensures quality machining and fit compatibility with LS1 cylinder head specifications.

Key Features & Benefits

• Roller Design: Reduces friction and wear on cam lobes during valve actuation.
• Aluminum Construction: Lightweight material improves engine efficiency and reduces parasitic load.
• 1.7 Ratio: Specific leverage ratio designed for optimized LS1 valve lift and duration.
• Shaft-Style: Proven shaft mount design for stable and consistent rocker arm geometry.
• DNA® Brand: Precision-manufactured component meeting quality standards for engine applications.

Specifications

Ideal Applications

• LS1 engine performance upgrades and rebuilds
• Street and strip engine valve train modifications
• High-RPM engine applications requiring reduced friction components
• Engine builds prioritizing weight reduction and efficiency