All ends of each tube will need to be cut. The lengths of tubing on both sides of the bend are longer than you'll need to allow for a wide range of drops and stretches. They are not pre-fit hardtails... they are universal and fabrication skills are required. They have been used on Hondas, Kawasakis, etc., and are not just for Yamahas or the XS400. These kits are geared toward people with the welding and fabrication skills to build a frame, but don't have access to a tube bender or CNC laser for the axle plates.