Rolf Prima Vigor ES Clincher Road WheelsetThe Vigor range has proven the most popular aero wheelset since Rolf Prima's inception. Such uptake is only possible with a consistently fast, light wheelset that's durable. The design and technologies woven throughout this Vigor ES alloy wheelset ensure that many rivals fail in comparison Vigor ES Wheelset: Lightweight, Aero AlloyCombining the very best in aerodynamic research and development with cutting-edge engineering, this Vigor ES wheelset is fast and light - when you realise that the Vigor is an alloy wheelset, you're almost taken aback by the responsive acceleration and climbing capability. The combined weight of the Vigor ES alloy wheelset is split between 700 grams at the front and 915 grams at the rear. Weight savings are possible through Rolf Prima's Paired Spoke Technology - this unique engineering process serves to neutralise pulling forces to offer a lighter and smoother roll. In turn, you receive a huge boost in aerodynamic performance The Vigor alloy wheelset supplies these 32mm deep alloy wheels with pure speed through the assistance of Rolf Prima's TdF3.0 hubset. This hubset is manufactured with steel bearings to save further weight and increase both rolling performance and durability. Rolf Prima claims the TdF3.0 hubset delivers a 20% gain in lateral stiffness through the incorporation of their Differential flange Diameter™ technology, which complements the aerodynamic engineering of the Vigor ES wheelset The front and rear wheels have a 16/20 spoke makeup, of course the spoke count has been researched and maximised for each possible lightweight, aerodynamic advantage. Be the King of the road and conquer your local Road Races and Sportives with the lightest aero alloy wheelset on the market, the Rolf Prima Vigor ES Clincher Road Wheelset Features:Material: Alloy (Rim); Forged 6061-T6 Alloy (Freehub); Steel (Bearings)AerodynamicDurableLightweightTubeless compatibleSmooth and durable Enduro steel bearingsIncludes rim strips and QR set where applicableWeight: 1.62kg (Total): 700g (Front); 915g (Rear)Technical Specification:Brake Type: CalliperHubset: TdF3.0 Hubset with steel bearingsSpoke Count: 16/20Spoke Type: Bladed CX-SpeedRim Depth: 32mmRim 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.