Hypertech 358781 Hypertech Street Runner Power Chips Valves This 12-inch kit uses a

This 12-inch kit uses a heavy-duty pressure plate with Centerforce's centrifugal weights

Sold as a complete set with all required sleeves

Part 59170 is configured for its specific application with attention to fitment requirements

Direct-fit installation using factory spring perches

Hypertech 358781 Hypertech Street Runner Power Chips Valves This 12-inch kit uses aHypertech's Hypertech 358781 Hypertech Street Runner Power Chips delivers old school ECU tuning that defined the aftermarket for decades. By swapping the factory EPROM in your ECM for this pre programmed performance chip, you gain optimized fuel mapping, advanced timing, and refined transmission behavior. The Street Runner line covers a broad range of GM, Ford, Mopar, and import applications. This listing is for part number 358781. Gains of 10 20 HP