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This 2-into-1 exhaust system is designed for large displacement, high output engines. Similar to the Fat Cat system, but has increased capacity for larger engines. The Boarzilla is an excellent choice for engines with performance modifications and plus 25% or larger displacement. The muffler includes a 2-1/2” core perforated baffle. Includes full-length header heat shields to ensure great looks over the long haul.

D&D’s philosophy is to trust their own R&D program, developing their product line to reflect what they learn during their countless hours of testing on the D&D dyno. But they didn’t stop after they made big power, they also built systems that are engineered to fit and look great! Inspect a D&D pipe, and you’ll find true craftsmanship—from the hand-ported inlets and collectors, hand-fit heat shields with machined and welded steel clamp brackets, heavy-duty mounting supports and flawless finishes, you’ll know you made the right choice for your Harley®.

All models are available in brilliant chrome or high-temperature black powder coat finish. Includes full-length header heat shields to ensure great looks over the long haul.

TUNER COMPATIBILITY NOTES
All 2006-up Twin Cam® Dyna® model 2-into-1 Boarzillas are equipped with dual (12 &18mm) oxygen sensor bungs. 1995-2005 models include 18mm bungs.

BAFFLE OPTIONS
Wrapped (Q) Big Bore Baffle – Baffle is wrapped with sound control material. Still has plenty of bark, but with less edge than the unwrapped baffle. This design allows earliest available torque with no loss of horsepower at the top end on modified to highly modified engines.
Big Bore Baffle – High flow perforated, big bore design. Loudest exhaust note and most flow. Designed for the rider with extensive performance modifications who wants maximum high rpm output.

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 1 lbs
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Emissions Compliant

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