Engines and Components› Camshafts and Valvetrain

YELLA TERRA

GM LS3 Ultralite R/A Kit - 1.7 Ratio Non-Adj

$704.99

SKU: Y00C YT6667

In Stock
In Stock
Ships by Jun 10
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Yella Terra Ultralite Shaft Mount Non-Adj. Rockers 1.7 (Part Number: YT6667) are high-performance roller rocker arms made from aircraft-grade extruded aluminum. Yella Terra claims these are the strongest aluminum rocker arms globally, surpassing rivals in deflection and bend tests. Designed for high-revving street engines and most race applications, they have a proven track record in official Holden racing teams and have been tested for over 170,000 km at 5000-6500 rpm.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandYELLA TERRA
Part NumberY00C YT6667

Videos

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

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

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

StreetlegalTV.com - Yella Terra Roller Rockers

Buy with Confidence

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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