DT Swiss XM 421 SBWT Disc-specific Presta-drilled Black - 27.5 Inch -

A lightweight rim as wide as a downhill rim was just a couple years ago? State of the art materials and excessive testing make it possible. DT Swiss knows exactly how light it can design a product to fullfill its purpose to perfection. This is why the XM 421 is as light as an All Mountain rim can get, yet still fears no trail, no matter what rock gardens it has on the menu.Features:System weight:- The system weight is composed of the weight of the rider and his equipment, plus the bike with luggage.Rim Diameter:- The 700c (622 mm / 29 inches) is the most common wheel size for road racing. The 650b (584 mm / 27.5 inches) wheel size is used in specific areas. Each wheel size offers unique advantages for different kinds of riding.Rim height:- In cycling, rim height significantly impacts the aerodynamics, agility and weight of the wheel. The general principle is the higher the profile of the rim, the greater the aerodynamic advantage, the lower the profile of the rim, the greater the respo