Over time, worn rocker arm pivots and roller tips introduce excess lash, noisy top end chatter and possibly uneven valve lift. Upgraded roller rocker arms minimise friction across the valve stem tips, reducing valvetrain wear while improving lift accuracy at higher rpm. Whether you are replacing worn factory rockers or setting up a high lift valvetrain for your project car, quality rocker assemblies restore precise valve actuation and keep your engine running at it’s absolute best.