Louder exhaust note and good balance of torque and horsepower.Īll Exhaust Systems listed on these pages are designed solely for Competition Race Use Only.

Louvered Baffle – Original baffle design, louvered and unwrapped to provide higher flow. This design allows earliest available torque with no loss of horsepower at the top end on stock and moderately modified engines. Still has plenty of bark, but with less edge than the unwrapped louvered baffles. Wrapped (Q) Louvered Baffle – Baffle is wrapped with sound control material. Includes full-length header heat shields to ensure great looks over the long haul. 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®.Īll models are available in brilliant chrome or high-temperature black powder coat finish. Excellent workmanship inside and out broad power design really shows up on the dyno.ĭ&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.

The D&D Fat Cat 2-into-1 exhaust system is an excellent choice for engines with performance modifications from stock to plus-25% displacement, delivering a torque curve that is high and wide, with a strong top-end pull.

Harley d d fat cat review