[05rappy]

Does anyone use Fat Boy 4 exhaust on here, i havent really heard anyone say anything about them, just wonderin, cause its from duncan, and ducan has a good rep.

 

[Honda_KiLlEr660R]

duncan more or less specializes in the trx line of quads

 

[Mad Dog]

duncan more or less specializes in the trx line of quads

Yep, that's where duncan's great rep comes from. They make excellent parts and power with the 250R and 450R.

The duncan for the 660 is a good pipe that makes good power, nothing special one way or another. I haven't known anyone who's had one that was unhappy with it though.