More Power RacingFree ShippingEvery D&D pipe is developed to produce maximum 
power throughout the rev range. For over thirty 
years D&D has earned their reputation by making a 
premium quality pipe for every customer, not just 
one-off specials for high profile race teams. 
Every pipe is developed using their state-of-the-

D&D Harley Exhaust

D&D Harley Exhaust

Every D&D pipe is developed to produce maximum power throughout the rev range. For over thirty years D&D has earned their reputation by making a premium quality pipe for every customer, not just one-off specials for high profile race teams. Every pipe is developed using their state-of-the- art SuperFlow Eddy Current Ram Air Dyno, SuperFlow Flow Bench, and a first in the industry multi- cylinder Lambda Fuel Air Ratio Sensor interfaced with their dyno for real time meter and graph analysis.

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