COMP Cams Poly Lock 1/2in Hi-Tech Single

This 1/2 inch Hi-Tech polylock adjusting nut from COMP Cams is built for 1/2 inch rocker arm studs, specifically designed to work with their Ultra Pro Magnum and Ultra Pro Magnum XD rocker arms. It’s a well-built piece that helps ensure your rocker arm geometry stays locked in place, even under the stress of high-performance engine operation. Keeping your rocker arms properly adjusted is key to maintaining correct valve timing and ensuring your engine runs smoothly and efficiently.

When you're building a serious engine, especially for racing, the small details matter. This polylock is made with high-end race applications in mind, meaning it's designed to hold its adjustment securely. This prevents the nut from backing off due to vibration or engine load, which could otherwise throw off your valve lash settings. Having a secure adjustment means more consistent performance from your engine, lap after lap or pass after pass.