T-Rex Racing 2015-2017 Yamaha YZF-R1 No Cut Frame Front & Rear Axle Sliders Case Covers Spools - Red Material = UHMW-PE (ultra high molecular weight polyethylene) Slider dimensions = Approx 1.75 " in overall length, 2" in diameter NO CUT or plastic fairings modification required Fit Models = 2015 - 2017 Yamaha YZF-R1