Rolf Prima Elan Alpha Clincher Road WheelsetRolf Prima's Elan Alpha Clincher Road Wheelset is super light, aerodynamic, and hugely powerful. The Elan Alpha wheelset is so light that it may just well be the lightest and fastest alloy wheelset currently on the market. Elan Alpha: Light and Aero Alloy WheelsetThe Elan Alpha has rewritten the script: you no longer need to choose between aerodynamic performance and a lightweight wheelset. Incredibly light at a total weight of 1.33 kilograms - that's 580 grams up front and 755 grams at the rear. Ultra-fast and aerodynamic, these Elan Alpha Clinchers feature Rolf Prima's Paired Spoke Technology for an engineering edge alongside Delta Rim Technology™, which makes this alloy wheelset perfect for training and racing The Elan Alpha incorporates Rolf Prima's TdF5.5 Hubset, which is durable, lightweight, and buttery smooth. Finished with a 20/20 front-to-back split of CX-Ray spokes, this Elan Alpha alloy wheelset accelerates quickly on the hills and in sprints to give you everything you'll need in a performance-ready alloy wheelset Features:Material: Alloy (Rim); CNC Machined Titanium (Freehub)AerodynamicStrongLightweightResponsiveTubeless compatibleIncludes rim strips and QR setWeight: 580g (Front); 755g (Rear)Specifications:Freehub: Shimano/SRAM/Campagnolo 10/11-speedHubset: TdF5.5 with ABI ceramic zero bearingsSpoke Count: 20/20Spoke Type: Bladed CX-RayRim Depth: 22mm Alloy ClincherRim Width: 23mm (maximum)Wheel Size: 700c Technologies:Paired 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.