The original 4-spoke wheel for the track. CORIMA's spokes wheels are among the best on the market. Widely tested in training or competition, the CORIMA 4-spoke wheel will accompany you in your quest for speed. It will be lighter but less rigid than a 5-spoke wheel. It will be heavier but also stiffer than a 3-spoke wheel. Product features 28" tubular front Profile: 47MM Rim width: 22.6mm Axle: Axle Ø9 x 100mm + 2 screws M6 x 25mm + 2 bolts Ø20mm Model: HM Weight: 770 g Carbon weave: 3K Integrated magnet Shipped with: Protection wheelbag Valve extender Front track bolts Tyre pressure The maximum air pressure allowed for tubular wheels is the one recommended by the manufacturer of the tubular tire you fit on your wheel. For comfort and performance we recommend fitting 25 mm section tubular tires on our 26 mm wide rims and 23 mm section tubular tires on our 22.6 mm wide rims.