**** Suits Yella Terra Alloy 12 port Head ~ bolt straight on ****

Part# YT5029 - Yella Terra Platinum extreme duty racing roller rockers, twin shaft type roller set to suit all Holden red, blue and black 6 cylinder engines. The extreme race series of rollers is the latest design, extruded 2024 aluminium [aluminum for our USA friends] rocker arms, wide body roller rockers for extreme race applications. For use with mechanical or hydraulic camshafts. Includes shafts and 7/16 UNC mounting fixtures, adjustable valve lash on tail of rocker arm [push rod side] with a rocker arm ratio of 1.5 : 1

NOTE: Standard heads may require machining for the screw in fixings ~ drill & tap for 7/16” UNC