Yella Terra Pro Street Roller Rockers BBC 1.8 HYD Ratio YT5013

Yella Terra Pro Street is ideal for high revving street/strip applications. Manufactured and assembled in Australia using the highest quality materials. The Pro Street rocker arm is supported by the same hardware used in our severe race Platinum series, including massive ground trunnions that have been machined to accommodate oversize needle roller bearings. The ground finish on our trunnions offers smoother operation, lower friction and better bearing compatibility than the machined finish used with comparable products. Compatible with Factory Head BB 396, 402, 427, 454. Compatible with Aftermarket Heads w/ factory valvetrain geometry Brodix -1 and -2. Compatible with Brodix 2x, 3, 4 with +.150” or longer inlet valves. Compatible with Chevy Performance Bowtie with +.150” or longer inlet valves. Compatible with Dart Iron Eagle, Pro 1, Big M 410 with +.150” or longer inlet valves. Compatible with Edelbrock Victor Jnr with +.150” or longer inlet valves. Compatible with World Products Merlin with +.150” or longer inlet valves.

EASY FIT Rockers bolt on. Fits standard mountings. No machining required.

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

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.