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Killer B Hardened Up Pipe Stud Set of 5 Perrin UpPipe Subaru 02-14 WRX / 04-20 STI Perrin 2 Inch Big Tube UpPipe 02-14 WRX / 04-20 STI
Set of 5 Hardened Studs Increase spool and exhaust flow Ideal for aftermarket turbos