GM LS1 Ultralite R/A Kit - 1.7 Ratio Non-Adj.

The GM LS1 Ultralite R/A Kit - 1.7 Ratio Non-Adj. from YELLA TERRA is a precision roller rocker arm assembly designed for LS1 engine builders and performance enthusiasts. This kit is ideal for those seeking to reduce valvetrain weight while maintaining reliable geometry for street and mild competition applications.

The non-adjustable 1.7 ratio kit optimizes valve lift and duration characteristics specific to LS1 platform engines. YELLA TERRA's ultralite design utilizes advanced casting and machining processes to minimize rocker arm mass without compromising strength or durability. The fixed 1.7 ratio geometry ensures predictable valve actuation across the RPM band, simplifying installation and operation.

This assembly is particularly beneficial for LS1 owners running naturally aspirated engines, mild boost applications, or track-focused street cars. The compact footprint allows for straightforward installation on stock or modified LS1 cylinder heads, making it a valuable addition for those looking to enhance engine responsiveness.