40mm deep carbon fiber wheels are a great choice if you live somewhere windy or like climbing mountains but still want a set of aero wheels. Our Aero 40 wheels with DT Swiss hubs are an even better choice. With our excellent carbon fiber layup matching the fine manufacturing of DT Swiss hubs. Our Aero rims feature a mix of Toray T700 and T800 carbon fiber. By missing the two types of carbon cloth, we now have a set of wheels that weigh around 100g less.We have still though managed to keep the wheels strong and stiff, we have also used the same modern wide tubeless ready aero shape. Our wheel rims work with your tires to help stop the air breaking up around them. We have even managed to increase heat tolerance in our brake tracks, taking our wheels up to being tolerant of 300° from 240°.We then use Sapim CX-Ray spokes to lace your choice of DT Swiss hub to our carbon fiber rim. The aero Sapim CX-Ray spokes are the perfect spokes to use with our Aero rim. As like our rim they are light and strong, exactly what you want.Finally, you can pick from either a DT Swiss 350S or 240S hubset. Both come with featuring the famous DT Swiss build quality and almost instant drive. The only real difference is the 350S is more affordable, and the 240S is lighter. Features Wide Rim Tech 25mm rim wide creates a better, more stable support, while the shape of the tire and rim together creates regular, stable air flow, in short, more aerodynamics, less attrition. provides an ideal basis for 25/28mm tires, the sizes currently popular. 2-Way Clincher Tubeless. Tubes or No-Tubes Use either traditional tires with tubes, or tubeless tires without tubes. Tubeless tires can provide lower rolling resistance and better protection from punctures. Sapim CX-RAY As light as a titanium spoke The CX-Ray still receives the best results in fatigue testing of any spoke. The CX-Ray aero spoke combines excellent aerodynamics with low weight and great strength. Not only are they more aerodynamic, they also make wheels lighter and stronger. Its unique strength and flexibility make the CX-Ray suitable for most bicycle disciplines. CX-Ray spokes are used by top bike racers and triathletes around the world. Sapim Secure Lock NipplesSapim Secure Lock nipple is a locking mechanism that prevents nipples from untightening.Secure Lock nipple can achieve a stable and well defi ned deformation on the thread. Each nipple has an additional locking resistance of 18 +/- 3 cNm. UCI Approved This wheelset has been certified and approved by the UCI (Union Cycliste Internationale), for use in UCI sanctioned road races. Specification Type Carbon Racing Bike Wheelset Material 100% Carbon Fiber Toray T700 & T800 Size 700C Rim Finish: UD Matt Drills: 20/24 Holes Width: External: 25mm Internal: 18.35mm Depth 40mm Profile Clincher Tubeless Ready Hub DT240EXP/350SL Hubs Spoke Sapim CX-Ray Spokes Spoke Count Front: 20 Rear: 24 Spoke Pattern Front: Radial Rear: 2-cross Nipple Alloy Color: Black Cassette Compatibility Shimano 11speeds Wheelset Weight Total: 1360+-20g (DT 240S) Front: 625+-10g Rear: 735+-10g Total: 1429+-20g (DT 350SL) Front: 625+-10g Rear: 804+-10g Brake Surface 3K Twill Recommended Tyre Size 700 x 25-28mm Rider Weight Limit 232lbs/105kg Guarantee 2 years Free 1 set of skewer Carbon brakes pads Packing Size 81.5cm x 17cm x 65.5cm Purchase Notes Please do use black rubber if using tubeless tyre. Tight the valve before pumping.