Premium-quality forged steel rocker set in high-lift, 1.4 ratio. Steel pedestals and improved rocker shaft, adjusters and nuts. Bronze bearing-grade bushings. All components made in the UK. The 1.4 ratio is ideal for both street and race applications, and avoids the high stresses and wear of 1.5 ratio. Many vintage race groups will not allow modern machined-aluminum roller-shaft and roller-tip rockers, so this setup was developed to meet that need.