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D38 series

The D38 Series is our latest wide-platform gravel carbon rim family, engineered for modern high-volume tires and mixed-surface speed. With a 38mm internal / 44mm external width and five depth options—45mm / 50mm / 55mm / 60mm / 65mm—the D38 lineup bridges the gap between pure aero road and technical gravel.

The extra-wide bead shelf stabilizes 45–55mm+ tires at lower pressures, improving traction, comfort, and pinch-flat resistance. A deeper aero section adds straight-line speed on open roads, while the tubeless-ready, hookless/hooked (optional) profile keeps weight competitive and setup simple.

Whether you’re racing Unbound-style events, bikepacking remote routes, or chasing PRs on choppy tarmac, the D38 Series delivers a planted, confident ride across surfaces.

700c wide gravel bike carbon rim profile, 38mm internal (hookless) / 37.6mm internal (hook), 44mm external and 45mm deep

D38-45 gravel bike 38mm internal width 45mm deep tubeless carbon rim - 440g
700c wide gravel bike carbon rim profile, 38mm internal (hookless) / 37.6mm internal (hook), 44mm external and 50mm deep

D38-50 gravel bike 38mm internal width 50mm deep tubeless carbon rim - 460g
700c wide gravel bike carbon rim profile, 38mm internal (hookless) / 37.6mm internal (hook), 44mm external and 55mm deep

D38-55 gravel bike 38mm internal width 55mm deep tubeless carbon rim - 480g
D38-60 gravel bike 38mm internal width 60mm deep tubeless carbon rim - 500g

D38-60 gravel bike 38mm internal width 60mm deep tubeless carbon rim - 500g
700c wide gravel bike carbon rim profile, 38mm internal (hookless) / 37.6mm internal (hook), 44mm external and 65mm deep

D38-65 gravel bike 38mm internal width 65mm deep tubeless carbon rim - 520g