Thanks..........yeah they do need something. We tried them out a few weeks back and the bike is LOUD..........but it goes..... BBBBbbbblllllllllleeeeeeeeehhhhhhhhhh....... NO Back pressure/power whatsoever. Bummer. Great sound though. *S* I just want it to move now. ~*~ Painted Lady

~*~ Cover me! I'm changing lanes!! ~*~ my paintings: http://www.angelfire.com/fl/PaintedLady