Katech LS Billet Belt Tensioner | Car Applications

The Katech LS Billet Belt Tensioner is a precision-engineered upgrade designed to eliminate belt slip and accessory drive failures under the most demanding conditions. Crafted from 6061-T6 billet aluminum and optimized through Finite Element Analysis (FEA), this tensioner delivers superior rigidity and consistent belt tension where factory units fall short.

Developed from Katech’s legendary C5-R Corvette racing program, this component carries decades of motorsport innovation into your LS-powered street or track build. Every detail reflects race-proven engineering, from its CNC-machined body to its corrosion-resistant anodized finish.

Factory tensioners often flex under high RPM, causing belts to walk off-center or even throw the belt entirely. Katech solved this problem for endurance racing—and now that same technology is available for your performance build. An OEM pulley is used with raised belt keepers to reduce the belt’s ability to walk away from the centerline, ensuring perfect alignment and maximum reliability.  

Key Features

• USA 6061-T6 Billet Aluminum Construction | CNC-machined for strength and precision.
• FEA-Optimized Design | Engineered for maximum strength-to-weight ratio.
• High-Load Spring Mechanism | Maintains consistent tension under extreme RPM and load.
• OEM Pulley with Raised Belt Keepers | Prevents belt walk by keeping the
• belt centered on the pulley, reducing the risk of misalignment or belt loss.
• Quick Installation | Includes hardware; installs in under 15 minutes.
• Race Approved | The original aftermarket tensioner approved for LS racing series engines.
• Color Options | Available in black, red or silver.
• American Made: Engineered, machined, and hand assembled at Katech Engineering,  Clinton Township, Michigan, USA!

Technical Specs

• Material: USA 6061-T6 Billet Aluminum
• Finish: Anodized Tensioner with laser-etched Katech Logo
• Weight: Approx. 1.2 lbs
• Operating Range: Designed for sustained use at 7,000+ RPM
• Belt Requirements:
  • 2010–2012 Camaro: Gates K060827
  • 2013–2015 Camaro: Gates K060790
• Compatibility: LS1, LS2, LS3, LS6, LS7 engines in Corvette, Camaro, CTS-V, GTO, G8, and SS

IMPORTANT NOTE Not for supercharged engine applications unless the supercharger has a dedicated drive.

Legacy of Performance

Katech has powered Le Mans-winning Corvettes and countless LS-based race cars. This tensioner is a direct descendant of those championship designs, delivering unmatched accessory drive stability for high-performance builds.