Dnipro 40mm Wide-rim Wheels


Adventure racing wheels designed with speed, strength and reliability in mind

£100 from every wheelset will go to helping Ukrainians affected by conflict 🇺🇦


This wheelset is designed for endurance racing on 28/30/32mm tyres. Practically, this means that it needs to be light, aerodynamic, but most importantly strong enough to withstand the rigours of racing on a variety of surfaces.

The strength of these wheels is assured by 28 Sapim CX Ray spokes, strengthened rims, and tough Trailmech gravel hubs. These wheels are therefore also suitable for heavier riders looking for fast road wheels.

All of our wheels are named after cities and rivers in Ukraine, out of respect to our Trailmech colleagues and all Ukrainians affected by the conflict. We chose the famously wide Dnipro river to name our wide 40mm rims after. The conflict in Ukraine has seen the Dnipro unleashed, through the breaching of dams, to help protect the city of Kyiv. The subsequent flooding led to the restoration of important historic wetlands, which we hope will remain as a positive in the aftermath of the war.

Ultra-wide Rims

Our rims are made from a high-quality T800 carbon fibre, for compliance and stiffness, lightness and strength. With a 32.9mm external width, and 25mm internal width, these wheels create an extremely aerodynamic profile with 28mm tyres, whilst remaining flush up to 32mm, and at a maximum can accommodate pretty much any tyre your bike will fit.

The wide rim bed means you can ride wider tyres with better handling, lower ‘squirm’, and reduced risk of pinch flats, whilst also increasing efficiency at lower pressures across a wide range of surfaces.

A U-shaped rim profile provides maximum aerodynamic efficiency at a wider variety of yaw-angles than a standard V-shaped rim. Our rims are paired with bladed Sapim CX-Ray spokes for their legendary strength, longevity, and aerodynamic advantages.


Our Ukrainian Trailmech hubs are some of the finest gravel hubs on the market, and with their patented Vortex ratchet engagement system power transfer is almost instant offering between 6 and 7.2 degrees of travel. It’s not only quick, but also strong – the unique vortex design means that the more force you put through the pedals, the harder the ratchet engages reducing the risk of slippage.

As with all ratchet hubs, the sound of the freewheel is a distinctive mark of quality so be prepared to get used to that ‘angry bee’ sound, and wonder how you lived without it before. Note: if you’re not a fan of a loud freewheel, adding a little more 5w-40 oil to the ratchet will reduce the volume.

Inside these beautiful CNC alloy hubs, you’ll find high-quality Japanese EZO bearings for high efficiency and low maintenance.

In the wild

These are wheels designed to be ridden and challenged, built for big days and bigger climbs. Check out the gallery below to see our wheels in the wild, doing what they do best.


  • 40mm T800 Toray carbon fibre rims
  • 32.9mm external and 25mm internal rim width
  • 28-43mm tyre compatibility
  • Trailmech gravel front and rear hubs
  • Six-bolt disc rotor mounts
  • 11-speed Shimano-compatible freehubs
  • Included spacer for 10-speed hubs
  • Front-wheel weight 695g 
  • Rear-wheel weight 824g
  • Combined weight 1519g
  • XDR compatibility, but subject to availability from Ukraine
  • 28 Sapim CX Ray spokes per wheel

Weights given for 12mm thru-axle format, and vary slightly for 15mm/QR


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Dnipro 40mm Wide-rim Wheels
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