Nominal ratios from 1.5 to 1.8 with adjustable and non adjustable versions The design incorporates high density aluminum arms and true roller-tips giving you smooth, quite, and cooler operation while eliminating side thrust and wear and extending the life of your components. You can run less spring pressure yet keep the same valve control. And the nose-wheels are the lightest in the industry which keeps the weight over the valve limited. Yella Terra Street uses a fully captured, oversized Torrington needle bearings mounted on an 11/16″ shaft which is much larger than factory, it carries the load better. Torrington needle bearings mated to full shaft and trunions You get the power and performance of Yella Terra easily and hassle free. All hardware is supplied, and generally, installation takes an hour and there are no special skills required. Yella Terra Street Roller Rockers are designed to easily mount to the existing head with no modifications. Easy installation, no cylinder head modification and all hardware supplied You get the confidence you need to take your engine into the higher rev ranges knowing that the Yella Terra Street rockers are there keeping your valve train hopping while running smoother, quieter, and cooler. Yella Terra Street Rockers set the stage for higher revs with their precision wheel tip rockers and superior trunion mounts and captive bearings. That gives you more performance, easier maintenance, and a longer cylinder head life. Yella Terra Street optimizes the valve train while keeping things cool and quite. Keep speed and performance up while keeping temperatures and noise down. Smoother, cooler, quieter operation, improve cylinder head life That means less maintenance and more track time. The true roller tip design behind Yella Terra Street Rockers reduces valve side thrust and gives you more life from your valve stems, guides and seats. Compared to factory, the Yella Terra Street line up dramatically improves power and performance by giving you the race proven engineering and design of the PerfectTune Yella Terra team for fractions of what you would pay otherwise. Yella Terra Street Terra rockers are there to give you the same legendary performance of premium race Yella Terra components at a fraction of the cost.
Street Terra Reduced cost, same legendary performance
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