For 1992 Diamond Back have the most comprehensive array of mountain bike frame and component features we have ever offered. Our Optimum Design System has been expanded to complement our already proven designs. Brake Booster seat stays taper from an outside diameter of 19 mm at the brake bridge to 16mm at the top, down to 13mm at the drop out for increased stiffness and maximum braking performance. 73mm wide bottom bracket shells make more room for today’s wider tyres and improves mud clearance. Unitrack steering users 1 1/8” oversize fork steering which is stronger and lighter than the standard 1” steerer. Super radius oversize fork with 600mm radius bend improves handling and control. Top tube cable routing keeps cables up and out of harms way. Alloy seat collar and outer butted seat tube offer improved seat post function. Sedis chains for superfast shifts and better reliability, and no special tools or pins are needed for installing or repairing. Avenir Duro 17 rims, featuring high side walls for increased breaking surface and better torsional stiffness, thicker centre section for increased strength at the spoke hole, and a radius bead that resist pinch flatting. And at 410g, they’re strong and very light.