Condition: NewMaterial: UHMW-PE (ultra high molecular weight polyethylene), aircraft grade aluminumNo cut or modifications requiredFit Models: Yamaha2007 - 2022 Yamaha YZF-R1 YZF-R1MThis purchase is for a set of clutch sliders that fit the above-mentioned make and model. The sliders are made of UHMW-PE (ultra high molecular weight polyethylene), a tough plastic with good strength, wear resistance and dimensional stability. It is more dimensionally stable than Nylon and used in many industrial ball bearing and friction reducing applications. Unlike our traditional center-hollow plastic pucks, the new pucks are completely solid and have up to 35 percent more surface area. This translates to a significant increase in strength. The gold spacers are made out of aircraft grade 6061-T6 aluminum and coated with a UV-resistant anodized finish. The bar is made of aircraft-grade stainless steel 304. Rest assured that you are getting the best material commercially available.