Description
S63 CNC Cylinder Head Porting E46 330ci The Racetech RT4100HR Racing Seat Bore Size Thickness:87.5 mm 0.089" RAD 20 0519 B48 Cylinder Head Valve lock keepers The Racetech RT4100HR Racing Seat is a standard size fiberglass race seat engineered for drivers who demand maximum support NOTE: Will NOT Work with factory OEM Pistons