Jan 29, 2010 #1 polarsledhead Active member Joined Sep 24, 2008 Messages 69 Reaction score 16 hey dus anyone know the hp increase for the rumble pack
Jan 29, 2010 #2 OnlyPolaris Active VIP Member Joined Apr 28, 2008 Messages 1,964 Reaction score 524 Location Lloydminster, AB maybe like 1-2hp. not enough to feel it. will gain more in noise and weight reduction then anything.