Custom processing is a style round model 51mm 60mm material stainless steel diameter 51 60 length 70 applicable models universal fit models general supporting relationship applicable article number 2017090010 specifications A 50.8mm, A 60mm function anti-rust applicable scene commuting name exhaust pipe sound reduction plug Catalyst muffler size 51 to 60 Use for noise reduction and purification of exhaust gas Product name: Motorcycle exhaust pipe modified 51mm 60mm muffler porous sound reduction plug back pressure core Mute catalyst sound reduction Product description: Modified muffler catalyst sound reduction plug to reduce noise and purify exhaust gas Standard product weight: 120g