ARP High Performance Series Wave-Loc Connecting Rod Bolt Kit - SB Chevy 350, 305, 307 45 Degree Fittings The RZ-56 includes minimal front

The RZ-56 includes minimal front venting and a plush removable/washable interior

This is the medium size version with a 20 degree angle

designed for applications producing up to 1000 HPAeromotive Inc

It features multi-adjustable straps for radio headsets and an adjustable visor system has a tinted band to help keep the sun out your eyes to make pit stops even faster

ARP High Performance Series Wave-Loc Connecting Rod Bolt Kit - SB Chevy 350, 305, 307 45 Degree Fittings The RZ-56 includes minimal frontManufactured from the same 8740 steel as ARP's High Performance Bolts, but with Wave Loc shank design. Wave Loc symmetrical waves have an effective interference range of . 0005" to . 007" for proper cap alignment and fit. Stress risers formed by standard rod bolts in factory bolt holes are virtually eliminated. ARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline.