Manufactured in-house at Piper Cams from a light weight alloy, supplied with stainless steel fittings and anodised in our signature colours. Our pulleys have a wide range of adjustment with a laser engraved scale with 2° increments, allowing you to gain the full benefit of your new cam profile. Note: M6 Cap Head adjustment Bolts are factory tightened to: 12 Nm. Ensure to tighten pulley bolt to the manufacturers stated torque wrench setting.