Yamaha YFZ 450R ATV Pro Bounce Nerf Bars Fits: Yamaha YFZ450R and YFZ450R SE 2009-2017, and YFZ450X 2010-2011 Gloss Black Motocross width: Overall width of your ATV with these nerf bars installed should be roughly 49" - 49 1/2" . Suspension Footpeg, which contain progressive shock absorbing abilities Bolt On Assembly prevents aluminum cracks caused by the frame flexing