Patented rack attachment system works on virtually any bicycle from full suspension mountain bikes to commuters and everything in between. Includes rails for mounting panniers. Patented attachment system secures easily. Works on the rear seat stays and front fork. Works with any type of frame material. Tough construction allows for variety of rugged riding uses. Silent and vibration free performance. Load capacity: 25 kg top/18 kg side. Weight: 2.2 lb. Material: Aluminium, Plastic.