UltraLite 5/16" Shaft Mount Roller Rocker Set,1.65:1 Ratio Suit Holden 5.0L EFI 304VN-On V8

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 compromisingstrength or durability. The perfect low-maintenance substitute for factory rocker arms which utilise problematiccage-less bearings, solid non-roller tips and heavy steel bodies. Specifically Designed and Machined to suit VN Style 304 Heads, Our LatestPro Street YT 6797 Rocker armsare the optimum low maintenance entry level CNC Machined Hydraulic Roller rocker for Street & Factory replacement applications. Yella Terra Ultralite is idealfor high revving street applications when coupled withfactory/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 bearingsdesigned for oscillating (rocking) loads, paired with oversize precision ground trunnions to reduce friction
• Intricately balanced lightweight arms ensuring vital valvetrain stability - focusing attentionon 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 excesstop-end heat
• Proven bolt-on shaft mount design that mounts both inlet/exhaustto common shaft, effectively increasing footprint and clampload twofold without any further cylinder head modification
• Chrome moly steel hardened and groundroller 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