Manley Pro Series Turbo Tuff I Beam connecting rods designed for sport compacts. Forged from 4340 aircraft quality vacuum degassed material. Shot peened after machining to Mil specs and 100% individually magnafluxed. Specificity designed to handle high horsepower applications when using turbos or nitrous. Cap fasteners are 3/8 ARP 2000 rod bolts. Horsepower range for these connecting rods is 1000+ making them perfect for any application. Additional Information Rod Length 6.142 Rod Style Pro Series Turbo Tuff Wrist Pin Size 0.866 Rod Series Sport Compact