Rolf Prima Elan Disc Clincher Rear Road WheelRolf Prima describes the Elan Disc Clincher Rear Road Wheel as a training wheel but this alloy wheel contains the performance of a high-end racing wheel. Light, quick to accelerate, aerodynamic, plus the supreme stopping power of a disc brake - this Elan Disc Clincher is impressive Elan Disc Clincher: Light and Aero WheelThe Elan Clincher rear wheel is lightweight at 800 grams. Fast and aerodynamic, this alloy training wheel features Rolf Prima's Paired Spoke Technology for an engineering edge alongside their Delta Rim Technology™, to slice through the wind The Elan Disc rear wheel incorporates Rolf Prima's XST hubset, which is not only lightweight and smooth, but comes with their bespoke Differential Flange Diameter™ for increased durability. The CNC machined titanium freehub delivers increased strength at the heart of the freehub. Finished with 20 round laser spokes, the Elan Disc Clincher is an alloy training wheel that accelerates quickly on the hills and cuts through the wind with ease. They perform so well that you would not be found wanting if you decided to keep this light, aero rear wheel on for your next race!Features:Material: Alloy (Rim); CNC Machined Titanium (Freehub)AerodynamicDurableLightweightResponsiveTubeless compatible rimIncludes rim strips and QR setWeight: 800gTechnical Specification:Brake Type: DiscFreehub: Shimano/SRAM 10/11-speedHubset: XSTSpoke Count: 20Spoke Type: Round laserRim Depth: 22mmRim Width: 23mm (maximum)Wheel Size: 700cKey TechnologyPaired Spoke Technology: Rolf Prima's Paired Spoke technology broke new ground when it was introduced in 1997. Bringing the spokes to the rim in pairs neutralises the left and right outward pulling forces, which allows them to build true wheels on lighter rims with fewer spokes. Fewer spokes and lighter rims help create increased aerodynamics and faster performing wheels Differential Flange Diameter™: Rolf Prima's patented oversize non-drive Differential Flange provides the leverage to transmit drive torque in the rear wheel to the non-drive spokes, thereby increasing the number of torque absorbing spokes Delta Rim Technology™: In skydiving, the Delta track is the fastest position for gaining forward airspeed. So, Rolf Prima mirrored this observation and adapted it for their Delta profile, which takes that cue using increased width and sidewall shaping to improve airflow and stability in straight on and crosswind situations. This wider rim is not just faster, but the additional tyre support improves cornering and handling in all riding conditions Buy Rolf Prima Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.