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

Fore technology keeps the rim upper bridge solid to make the rim stiffer
New Infinity hub plaform: stiff axle, durable bearings and new hub design guarantees wheel stability
ID360 freewheel technology for improved power transfer

No tubes means less friction, better efficiency and grip, a reduced risk of punctures
New rim bed shape makes it easier to mount and change tires
Fore drilling technology doesn't require the use of rim tape