YT UltraLite 5/16" Shaft Mount Roller Rocker Set, 1.65:1 Ratio (YT6797)

YT6797 - ULTRALITE, HOLDEN V8 EFI VN-ON

Suit Holden 5.0L EFI 304 VN-On V8

Part Number: YT6797

Yella Terra’s exclusive Ultralite rocker arm, shaft and pedestal system offers 50% less nose weight than the factory rocker system, the result being greater RPM potential without compromising strength or durability. The perfect low-maintenance substitute for factory rocker arms which utilise problematic cage-less bearings, solid non-roller tips and heavy steel bodies. Specifically Designed and Machined to suit VN Style 304 Heads, Our Latest Pro Street YT 6797 Rocker arms are the optimum low maintenance entry level CNC Machined Hydraulic Roller rocker for Street & Factory replacement applications. Yella Terra Ultralite is ideal for high revving street applications when coupled with factory/lightweight aftermarket springs. Manufactured and assembled in Australia using the highest quality materials and componentry consistent with those found in our Platinum race series.
Built to withstand 400lbs max open spring pressure
Oversize full-complement caged bearings designed for oscillating (rocking) loads, paired with oversize precision ground trunnions to reduce friction
Intricately balanced lightweight arms ensuring vital valvetrain stability - focusing attention on the harmony of the entire engine. 50% less oscillating nose weight eliminates valve float in upper RPM range allowing for higher rev ceiling
Extruded from aircraft grade aluminium, perfect for dissipating excess top-end heat
Proven bolt-on shaft mount design that mounts both inlet/exhaust to common shaft, effectively increasing footprint and clamp load twofold without any further cylinder head modification
Chrome moly steel hardened and ground roller tips of generous diameter (positively retained by internal circlip) preventing abrasion of valve tips and guides commonly seen with non-roller tip rockers. Allows for smoother, quieter operation. Maintains lash and reduces necessary and tedious engine maintenance