XFR manufactures the best ATV aftermarket parts in the world! Extreme Fabrication Racing's Standard Series Nerf Bars are custom engineered for your (2006-2021) Yamaha YFZ450 ATV, and are designed to maximize rider protection and security from the hazards of aggressive and technical riding. Our standard nerf bars are 100% hand crafted and made in America from domestic high quality aircraft grade aluminum to ensure superior strength and durability. Our Standard Nerf Bars are designed to directly bolt on, so no modifications are needed. All necessary hardware for installation is included.