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hubset: Carbon TT wheel systems orbit around the proprietary TdF4.4 hub, designed and manufactured in the USA. Front hubs feature a unique 85mm wide flange placement which increases lateral wheel stiffness by nearly 20%. Patented Differential Flange Diameter™ on the rear hub lends a mechanical advantage effectively doubling the number of functional pulling spokes; increasing wheel durability. Black, CNC machined hub shells with oversized axles provide high strength, stiffness and light weight. Optimized flange contours provide full spoke elbow support, increasing spoke life. Hubs also feature precision cartridge bearings with low drag supplementary contact seals and bearing preload adjustment on both front and rear hub shells.

freehub mechanism: CNC machined Titanium freehub body has 3 sprung steel pawls for a bomb-proof torque transfer system. Pawls are driven by 3 hardened steel leaf springs. The system is strong, simple and dependable.
rims: This proprietary, 58mm deep-section carbon fiber rim is light and offers superior lateral and torsional stiffness. Brake sidewalls are reinforced with fiberglass for improved braking performance and durability. The combination of low spoke count, exceptional aerodynamic performance and minimal rotating weight makes the Carbon TT wheel system the fastest tubular wheelset available in its category.

spoke & nipple: Black custom bladed, 14 gauge  spokes and internal alloy nipples with nylon inserts contribute to clean aerodynamic performance and superior, long-term durability. Patented, Jacketed Nipple Design™ and Dish Reducing design™ reduce spoke bending loads and rear wheel dish to increase spoke fatigue life.
extras: Rolf Prima Carbon TT wheel systems include alloy valve extenders and titanium quick release skewers (89g / set).

All Rolf Prima wheel systems are protected by one or more of the following US Patents: 5,931,544; 5,938,293; 6,024,414; 5,947,565; 6,244,667 and 6,497,042. Rolf Prima wheel systems are also protected by several foreign patents including Canadian Patent 2,136,053 with others pending.