Knucklehead Over The Transmission Exhaust Systems For 1936 - 1947 primary The built-in risers are set

The built-in risers are set on 3-1/2" centers

Maintains proper spacing for chain drive swingarm frames with disc brakes (1

730D1M 38"-long Slash Cut muffler set

734TM 38"-long Tapered muffler set

625-11 18"-long

Knucklehead Over The Transmission Exhaust Systems For 1936 - 1947 primary The built-in risers are set1 3 4" Over The Transmission Exhaust Systems For 1936 1947 Knuckleheads An outside the frame front pipe, and a rear pipe that routes over the transmission, bring a modern style and a throaty sound to your 1936 1947 Knucklehead. They all have slider channels except the 34" drag pipes, which can be installed with P clamps. 729C 34" long Slash Cut drag pipes (use Paughco #725D clamps to install) 729C40 40" long Slash Cut drag pipes 729CGM 38" long Goose