The Triumph Thunderbird has been designed from the ground up to feature an innovative 1,600cc parallel twin engine, six-speed transmission and 200mm rear tire. D&D has enhanced the riding experience by increasing the tone from the muffler through dyno-tuned slip-ons.

Easy installation, the D&D 2010 Triumph Thunderbird Boss slip-ons will increase low end torque by as much as 10%

These slip-ons utilizes the stock heat shields and correct the stock "cantered out" mufflers for a custom look.