Beyea UMP Modified Tri-Y Headers - 1-3/4 to 1-7/8 in Primary - 3 in Collector - Black - Small Block Chevy (Pair) Wiring Harnesses The NecksGen REV and Original

The NecksGen REV and Original units come with a fixed length tether that is a predetermined length to fit most drivers

1975-1984 GMC Jimmy

1-1/2 in OD

Available to fit a variety of popular cage dimensions

and as the inventory optimizer

Beyea UMP Modified Tri-Y Headers - 1-3/4 to 1-7/8 in Primary - 3 in Collector - Black - Small Block Chevy (Pair) Wiring Harnesses The NecksGen REV and OriginalProduct Description: Headers UMP Modified Tri Y 1. 75 to 1. 875 in Primary 3. 5 in Collector Steel Black Paint Small Block Chevy Pair With more than 15 years in the header fabrication business, Beyea Custom Headers knows how to customize your power curve to create a broader range of power. Each Beyea Custom Headers has been tried and tested. Beyea Custom Headers are used by many of the top Modified and Late Model race teams and engine builders across