2:1 Boarzilla is a stepped header system at the head is 1 7/8″ to 2″ at collector and 2 1/2″ where the muffler goes to the header. All Boarzillas full systems are equipped with heat shields,exhaust gaskets, bolt kit and baffles.   Every pipe is designed to increase low-end torque and horsepower.

  • Performance increases are about 8 to 10 percent on stock motors but may very with built motors with the proper tune on the bike.
  • Perforated Wrapped and Perforated Baffles are for 116″ to 131″ motors
  • 1995-2006 Boarzilla comes with 18mm O2 bungs for the stock 02 sensors that comes on the bike.
  • All 1995-2008 Touring models require tuning with our exhaust.


All Exhaust Systems listed on these pages are designed solely for Competition Race Use Only.
Not designed or legal for use on a public highway.

Not legal for sale or use in California on any pollution controlled motor vehicle.
Not legal for sale or use on any EPA pollution controlled motor vehicle.


Weight 39 lbs
Dimensions 47 × 25 × 9 in
Engine Type