Equip your GM Gen III/IV LS engine with the legendary Katech C5-R/C6-R Racing Timing Chain — the same chain used in championship-winning endurance racing engines. The Katech KAT-7636 (formerly HME-G68V-2) is built with exceptional tensile strength for unmatched accuracy, reduced stretch, and extreme durability.
 
Proven in racing and durability testing to never break, this chain is the ultimate upgrade when doing camshaft installations, high-performance builds, or servicing high-mileage engines. It’s a direct replacement that works with production sprockets for a straightforward installation.
 
Features:
Genuine Katech C5-R/C6-R Racing specification
Increased tensile strength for maximum performance and longevity
Zero reported failures in C5-R endurance racing history
Single bolt sprocket design for engines with 58-tooth reluctor wheel
Direct replacement for GM Gen III/IV LS applications
Ideal for cam swaps, performance upgrades, and preventative maintenance
 
Compatibility:
Fits a wide range of GM Gen III/IV LS gasoline V8 engines, including but not limited to:
Cadillac: CTS (2007–2015)
Chevrolet: Avalanche (2007–2013), Camaro (2010–2015), Caprice (2011–2017), Colorado (2009–2012), Corvette (2007–2013), Express 1500/2500/3500 (2008–2013), Silverado 1500 (2007–2013), SS (2014–2017), Suburban 1500 (2007–2013), Tahoe (2007–2013), Trailblazer (2007–2009)
GMC: Canyon (2009), Envoy (2007–2009), Savana (2008–2013), Sierra 1500 (2007–2013), Yukon/Yukon XL 1500 (2007–2013)
Hummer: H3 (2008–2009), H3T (2009)
Pontiac: G8 (2008–2009)
Saab: 9-7X (2007–2009)
 
Warranty & Policies:
Warranty: Included (conditions apply)
Returns: Not accepted if the customer orders the wrong item. Please check compatibility before purchasing.
 
Shipping Information:
Orders shipped within 1–2 business days
Tracking number provided upon dispatch
Australia-wide delivery and international shipping available