Yella Terra Ultralite Pro Roller Rockers LS7 LSX 1.9 ADJ Ratio YT6717A

Yella Terra Ultralite Pro is ideal for high revving street applications when coupled with factory/lightweight aftermarket springs. Manufactured and assembled in Australia using the highest quality materials. Late model V8 and V6 engines that run factory light weight valvetrain components are often subject to valve float in the upper RPM range, limiting the engines performance and full potential. Yella Terra’s engineering team set out to find a solution to the problem, and the result was the Ultralite. Yella Terra’s exclusive Ultralite rocker arm, shaft and pedestal system offers 50% less nose weight than the factory rocker system, the result being greater RPM potential, with the added advantage of improved strength and durability. Compatible with LS LSX.

Easy Fit Rockers bolt on. Fits standard mountings. No machining required.

Hydraulic kits are designed specifically for use with hydraulic lifters. Adjustable kits are designed for use with both hydraulic and mechanical (solid) lifters.

Extruded from aircraft grade aluminium, perfect for dissipating excess top-end heat.

Requires guide plates (sold separately) use original where applicable.

Shaft mount rockers do not require guide plates.

Requires YT 5123 - 25mm alloy spacer kit.

Studs included.

“D” Saddles (included) must be used to ensure correct radial fitment of the rocker shaft into the rocker cradle of the factory LS7 cylinder head. Some LS7 cylinder heads have variations in Rocker post machining and may require some further relief to clear the bottom of the Yella Terra Rocker. Special Instructions included.