Knucklehead Muffler & Pipes Extension

Mufflers and tail Pipe extensions for Knucklehead models thru 1947 Different length extensions in a variety of styles, and a nice selection of mufflers that will slip over any 1¾"-diameter headpipe. All measurements shown are overal lengths. Sold each. 1-7/8"-DIAMETER TAIL PIPE EXTENSIONS Fit over 1." diameter pipes, but have no slider channels or baffles.607S-KNU* 18"-long Slash Cut607G-KNU* 18"-long Goose Cut605S-KNU* 31"-long Slash Cut605F-KNU* 31"-long Flared Tip605G-KNU* 31"-long Goose Cut UNIVERSAL MUFFLERS599-KNU* 2."-diameter Super Slash Cut muffler with slider channel on left-side (19"-long)614-KNU* 3"-diameter Rocket muffler (31"-long)615-KNU* 3"-diameter Rocket muffler (28"-long)615A-KNU* 3"-diameter Rocket muffler (22."-long)613-KNU* Slash Cut turnout megaphone with slider channel on left-side (29"-long)606HR-KNU* 2."-diameter right-side High-Sweep muffler 606HL-KNU* 2."-diameter left-side High-Sweep muffler 616-KNU* 3"-diameter Turnout or Turndown muffler (22"-long)617-KNU