Pro-X Racing Forged Piston Kit for 2012-19 KTM 450 EXC / EXC-F - 94.95mm - 01.6432.B 2007 Arctic Cat Z 570 These mufflers start as round

These mufflers start as round 4-inch tubes

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Pro-X Racing Forged Piston Kit for 2012-19 KTM 450 EXC / EXC-F - 94.95mm - 01.6432.B 2007 Arctic Cat Z 570 These mufflers start as roundPro X Racing Parts Piston Kit ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low expansion, low friction piston alloy is used as is used for all major Japanese engine manufacturers. ProX Piston Kits are a first class solution to replace the original piston in your Motorcycle, Scooter, Moped, ATV, Personal Watercraft, etc. Our OEM style Tin coated pistons assist the wear in process when you just started the