Extruded from aircraft grade aluminium,perfect for dissipating excess top-end heat.50% less oscillating nose weight eliminates valve float in upper RPM range allowing for higher rev ceiling. Intricately balanced lightweight arms ensuring vital valvetrain stability - focusing attention on the harmony of the entire engine.Oversize full-complement caged bearings designed for oscillating (rocking) loads,paired with oversize precision ground trunnions to reduce friction.Built to withstand 400lbs* max open spring pressure.Our wide range of true ratios allows you to achieve high lift without relying solely on your camshaft…a trend many engine builders and racers alike are adopting to relieve the inertia on lifters and pushrods generated by aggressive and often violent ramp rates required to make big lift.ĭon't fall victim to bearing/trunnion upgrades which only address half the shortcomings of OEM rockers. Manufactured and assembled in Australia using the highest quality materials and componentry consistent with those found in our Platinum race series. Yella Terra Ultralite is ideal for high revving street applications when coupled with factory/lightweight aftermarket springs. The perfect low-maintenance substitute for factory rocker arms which utilise problematic cage-less bearings,solid non-roller tips and heavy steel bodies. 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. Air Flow Research Mongoose 260cc #1840/1845.
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