Exhaust Parts

Stop Rear Mount Failures on Your Thunderheader ExhaustFor years in our welding shop, we’ve repaired blown-out rear mount tabs on Thunderheader exhaust systems. The factory setup uses a small bolt head in the slotted flange, which can cause the slot...

When making your own exhaust system to fit your custom bike u-bends and straight tubing is east to come by, however you may not want to cut up a perfectly good exhaust system to steal the flanges off of them that allow the attachment of the pipes to the...

Shovelhead Exhaust Flanges These are CNC cut from extra thick 1/4" thick plate. We added a little more material in the diameter for more strength, and slightly slotted the hole for more adjustment. These make for a more stable flange to help keep those...

These bungs are for adapting your custom exhaust system to work with your fuel injections factory O2 sensors: Made of 1018 mild steel Tapped to fit 18mm x 1.5 or the later 12mm O2 sensors used by Harley and other OEM applications 1" O.D. for 18mm 3/4 od...