Gold Star "Twitter" Style Mufflers
For Stock And Custom Applications
Original Style 711-Z624 - 1-3/4" Inlet
Shown here on a 61 BSA DBD Gold Star in Clubman trim
Picture from The Gold Star Book (BSC Book #214-15)
711-Z624/B Muffler Set - 1-1/2" Inlet
(29" overall; 6" tail piece; 2" inlet pipe; 10-3/4" from inlet to center of bracket; 18-1/4" from outlet to center of bracket)
Shown here on a 1968 BSA Lightning from the December 2004 Issue (#164) of Classic Bike Guide
A cool mod for many different bikes
Shown here on a customer's 1966 Honda CB77 SuperHawk
Here is a video of the Twitters on the above Honda, to give you an idea of the sound.
Watch the video below, or Click Here to watch it on yuotube.