The CP Pistons Bullet Race piston set for BBF 521 cu in applications is a matched eight-piece kit intended for large displacement builds. The listing specifies bore details for the heavy-duty application and notes made-to-order status where applicable. This set is supplied as eight pistons to match the listed 521ci big-block configuration.
CP Piston BRS Bbf 521Cuin Head:460 Iron Bore :4.390 Set Of 8 (MTO Non-Cancel)