Exhaust pipe manufacturer D&D saw a need to improve performance and economy in a package that is economical for the 2008 Harley Bagger rider. The results are in… 6.3 mpg and 10 HP increase over stock.

D&D's Test Program D&D mapped out a 106 mile test that consisted of the same route, same gas station, same pump, with the motorbike set on cruise at 70mph. The stock results were 42.24 mpg; stock air cleaner w/Super Boss Slip-ons delivered 47.24 mpg; and Super Boss Slip-ons with Screamin’ Eagle air cleaner delivered 48.5 mpg!

In another independent test we sent a set of Super Boss pipes to Tilleys H-D in North Carolina and they produced dyno results of an increase of 10 HP and 10 Torque with the Super Boss Slip-ons and Screamin’ Eagle air cleaner.

D&D is building some of the most advanced exhaust systems that increase performance, improve economy and deliver value to your billfold.

Lowering The Performance Entry Point If you have a 2008 fuel injected Bagger then performance is a big issue for you. Dave Rash, The Pope of Pipe, delivered a bolt-on solution that produces power and torque right out of the box without a tuner. Just add the slip-on and high-flow air kit and you are good to go.