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clean installation
and heat shields are recommended on all rear pipes
724C40 40"-long Slash Cut drag pipes with slider channels
713DM 38"-long Slash Cut muffler set
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Knucklehead Shotgun Exhaust Systems For 1936 - 1947 PART #:411BR clean installation1 3 4" Shotgun Exhaust Systems For 1936 1947 Knuckleheads An outside the frame front pipe, and a shotgun 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. 729D34 34" long Slash Cut drag pipes (use Paughco #725D clamps to install) 729D40 40" long Slash Cut drag pipes (shown below on bike)
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