ARP 200-8533 Washer Kit 1/2" ID 7/8" OD chamfer black oxide washers ymm_41 the downpipe eliminates the OPF

the downpipe eliminates the OPF for a completely different sensory experience the moment the driver’s foot comes down

Test gains achieved by the Akrapovič technicians in controlled conditions show both power and torque gains over the Porsche sport exhaust system of +8

Wrench Size: 3/4" 12pt

Fits Following Engines: 409 CID Chevy Big Block V8

The system is finished with two hand-crafted carbon fibre tailpipes that complement the titanium construction

ARP 200-8533 Washer Kit 1/2" ID 7/8" OD chamfer black oxide washers ymm_41 the downpipe eliminates the OPFSAE Washer Kit 8740 Chrome Moly 1 2 x 7 8 x . 120 (ID x OD x Thickness) Chamfer: Yes