Our exhaust systems are designed around stock configurations. If your motorcycle has modifications such as Lowered Suspension, Shocks, or Aftermarket Saddlebags, the exhaust system may not work as intended.
- 2:1 Fat Cat is a stepped header system at the head is 1 5/8″ to 1 3/4″ to 1 7/8″ at collector and 2 1/2″ where the muffler goes to the header.
- All Fat Cat full systems are equipped with heat shields,bolt kit and baffles.
- All D&D full systems are equipped with heat shields,exhaust gaskets, bolt kit and baffles.
- Each exhaust system is designed and dyno tested in our facilities.
- Our testing is done with the Harley Tuner’s.
- Every pipe is designed to increase low-end torque and horsepower.
- Performance increases are about 8 to 10 percent with the proper tune on the bike.
- Perforated Wrapped baffles are for Stage 4 103″ to 113″ motors
- Using Woods cams for best performance use the Perforated Wrapped Baffle
- 1995-2006 Fat Cat comes with 18mm O2 bungs for the stock 02 sensors that comes on the bike.
- All 1995-2006 Touring models require tuning with our exhaust.
- The length of the system with the muffler is too short to use with Extended bag. We offer extended length muffler for bikes that have stretch bags. We will send a special order form to fill out.
- There is a upcharge of $250.00 per muffler.
- Call sales office 817-834-8961
- At idle, the motorbike is deep, boomy and full of character. Not only does the pipe look good, it is a wonderfully sounding experience for the rider.
- Blueing and Discoloration are caused by Improper Tuning and will not be covered under Warranty
- D&D Performance Exhaust Systems are designed for close course racing applications only.
- Not for use on pollution controlled vehicles.