GM LS1 Pro-St R/A Kit 1.7 Ratio - Adjustable

The GM LS1 Pro-St R/A Kit 1.7 Ratio - Adjustable is designed for automotive enthusiasts and professional mechanics who aim to enhance serpentine belt tension and accessory drive performance on LS-platform engines. This adjustable ratio kit effectively addresses common issues such as limited accessory mounting flexibility and excessive tension wear, making it ideal for various applications including street machines, restomods, and race-spec LS engines.

Featuring a 1.7 ratio configuration, this kit provides a mechanical advantage that minimizes belt slip while ensuring consistent tension across the accessory pulley array. Its adjustable design allows for precise tuning of idler and tensioner geometry without the need for custom fabrication, accommodating both OEM and aftermarket accessories. Constructed from durable materials, this kit is engineered to withstand the high temperatures and vibrations found in engine bays.

Ideal for LS1 engine builders, restoration shops, and performance tuners, this kit is a reliable solution for upgrading serpentine systems. Its compact footprint integrates seamlessly into tight engine compartments, making it a practical choice for various builds. Whether you're upgrading your cooling system or installing a high-output alternator, this kit is designed to meet the demands of serious automotive projects.