Universal Fishtail MufflerGZP Fishtail muffler uni 1. 5" & 1. 75" Baffled 21 5 8" (55cm) long muffler with a 21 2" (63. 5mm) diameter body. Fits 13 4" (45mm) headers. Comes with header clamp and reduction sleeve for 11 2" (38mm) headers. Clamp to mount the muffler to the frame is not included (ZPN 061220). HS Number: 8714104000 Note: Except where mentioned differently, all exhaust systems, mufflers, drag pipes, etc. shown in our catalog, are for closed course competition or in