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PLEASE NOTE: This wheel is on a 6-8 week lead-time.



Cyclocross | Tubular Rim | Full Carbon | Disc Brake


Design-engineered for the demands of the professional CX racer, this 38mm deep full-carbon tubular rear wheel is hand-built to be durable but super-light and super-fast. The pro-level ACX tubular rim is reinforced with aerospace-grade resin and spins on the world-leading DT Swiss hubs and aero-elliptic Sapim CX-ray spokes.



With an outer 28mm width and 25mm upper track ideal for 33c tubs,  this CX wheel features ProTour CX-ray straight pull spokes laced 2x cross for improved lateral stiffness and durability. The high-quality bearings spin with lower rolling resistance, and the legendary star ratchet system creates a durable and fast engagement. This wheel is hand-built using the world’s best components, giving the high-level CX racer a competitive advantage in elite competitions, but of course, this wheel can help win those challenging local cross events too.



  • Rim Build | CX-Race | 2nd Generation Cross-dynamic™ rim design using Toray T700/T800 UniDirectional carbon fibre with reinforced 3K weave rim bed for enhanced durability and anti-twist ThermSet™ resin rim walls for extra torsional and lateral stiffness
  • Rim Size | 38mm deep full carbon rim - 700c - 28mm total external width - 25mm upper track width - optimised for increased performance when fitted with 30c-37c size tyres
  • Hubs | DT Swiss | Straight Pull | R 142mm | Disc Brake Centre Lock | 12mm thru-axle | Bearings - high load capacity, outstanding reliability with ultra-low rolling resistance - 240/350 high-quality stainless steel - 180 ProTour Sinc ceramic   Learn More
  • Spokes | 180/240/350 x 28 | Sapim CX-Ray - black double butted with secure lock brass nipples - nickel-coated black  Learn More
  • Spoke Pattern | R x Two-cross pattern
  • Axle | 12mm Thru-axle | Axle adaptors can be fitted by your wheel builder
  • Tyre Compatibility | Tubular tyre only
  • Wheel Weights | 38/180 hub - 658g | 38/240 hub - 686g | 38/350 hub - 727g 
  • Recommended max rider weight | 100Kg
  • Included | service booklet - wheel build birth card - wheel manual
  • View full specifications sheets


  • Your order will be built by your nearest Master wheel builder using your billing address. If you want to change wheel builder, please locate your preferred builder using the link below and inform us in the `add notes` section of your shopping cart.

    MasterBuild Service: Wheels hand-built by your Master wheel builder to the build options selected, laced, trued, de-stressed and tested. This wheel build service does not include tubs, valves, disc rotor fit etc. Collection or delivery is available.

    UltraBuild Service: Your Master wheel builder will contact you to discuss and provide professional advice on the best ancillary products for you and your riding style. The order is hand-built using our full ready-to-ride UltraBuild service and fitting to your bike is optional. Collection or delivery is available.

    Please note: The cost of ancillary products for UltraBuild is paid directly to the Master wheel buiding business.

    LEARN MORE about our MasterBuild and UltraBuild services

    LOCATE your Master wheel builder

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