ISM4D rim weighs only 400g
Patented lightweight aero spokes and 22mm deep/19mm wide rims keep inertia low and control high
Solid upper rim bridge eliminates the need for rim tape, saving 60g
Patented lightweight aero spokes and 22mm deep/19mm wide rims keep inertia low and control high
Solid upper rim bridge eliminates the need for rim tape, saving 60g