The Katech C5-R Timing Chain Kit (KAT-7636-Kit1) delivers a complete, race-proven timing solution for GM LS engines requiring maximum durability, precise valve timing, and long-term reliability. Built around the legendary C5-R timing chain developed for Corvette endurance racing, this kit includes a 3-bolt cam sprocket compatible with both 24x and 1x cam sensor configurations, a matched crank sprocket, and ARP camshaft bolts for secure clamping force. Designed to reduce chain stretch and maintain accurate cam timing under high RPM, aggressive cam profiles, and increased spring pressure, this kit is ideal for stock refreshes, performance builds, boosted applications, and competition engines where timing integrity is critical.