DUO BrandModulus race wheels are the pinnacle of high performance. Our carbon race rims are hand made using Toray High Modulus carbon fiber. Their one-piece construction creates a stronger hoop that’s lightweight, responsive, and designed to win. DUO developed the low 30mm profile by design to prevent side drag on and above the track. Matched with our R2 race hubs, Modulus wheels are hand built in Ohio using stainless 14-gauge spokes with brass nipples. Available in both disc-specific and rim brake configurations.