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

Name: GM LS1 Ultralite R/A Kit - 1.7 Ratio Non-Adj.
Brand: YELLA TERRA
SKU: Y00C YT6645
Price: 704.99 USD
Availability: InStock

$704.99

SKU: Y00C YT6645

In Stock

Ships by Jun 10

Free Shipping

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Description

Yella Terra Ultralite roller rockers (YT6645) are designed for high-revving street applications with factory or lightweight aftermarket springs. Manufactured in Australia from aircraft-grade aluminum, they reduce nose weight by 50% compared to factory rocker systems, increasing RPM potential and improving strength and durability. These 1.7 ratio, non-adjustable hydraulic roller rockers are a direct bolt-on fit, requiring no machining. They are compatible with hydraulic lifters and do not require guide plates. A YT 5132 - 10mm rubber spacer kit is required for installation.

Fitment

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Specifications

Brand	YELLA TERRA
Part Number	Y00C YT6645

Videos

How to install Yella Terra High Performance Roller Rockers for the LS1 Engine

Product Review - Yella Terra Roller Rockers for LS Mast Cylinder Heads at PRI 2012

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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