Progress A-prime Tubular Road Rear Wheel

A set of aerodynamic carbon wheels for maximum requirements on road and triathlon. Lateral wind is no longer a problem anymore thanks to the new Air Plus U-Shape rim design with 28mm external width. This allows the use of wider tires without negatively influence on the wind flow. GRAPHENE is the world's strongest and lightest material which offers a totally revolutionary rim technology. NITRO Ceramic hubs with PAL-TECH technology.Features:- Sram: PROGRESS cassette body option SRAM XD-R compatible made of CNC aluminum. Reinforced with 3 bearings to resist high loads.- Rear hub with a very strong three pawl ratchet mechanism. Engagement with 3 oversize pawls and steel ratchet with 24 teeth's.- Pal-tech: A hub with Parallel Drilling technology ensures high precision 100% aligned bearing seats. PROGRESS hubs and bearings are designed for light weight, long lasting and best running performance.- Spokes: SAPIM CX aero spoke is the choice of champions and many teams at the Pro-Tour. Made in Belgium with an aerodynamic advantage and unbelievably high fatigue test results. We build them into our lighter wheels to achieve durable and long lasting wheels which don't need to be re-trued. Each Progress Wheel, hub and rim is designed with perfect spoke angle to release extra stress.- Diamond: DPL Brake Surface, Diamond Polishing Treatment. We are using advanced machinery & Diamond Polishing Treatment (DPL) for brake surface, allows the brake pad to work directly on 3K woven carbon fibers. This new process eliminates ´´run-in´´ periods, improves braking performance in wet and dry weather conditions, and creates much better braking performance.- AIR+PLUS: High speed technology with optimized aerodynamic efficiency and less drag. Lateral wind is no longer a problem anymore thanks to the new 28mm wide U-shaped carbon rim. This design allows the use of wider tires without negatively influence on the wind flow, more tire volume, lower rolling resistance and better handling in crosswinds condition. The AIR+PLUS is successfully worldwide race proven and wind tunnel tested.- Nitro: High precision CERAMIC bearings with maximum precision and low friction that increase durability.- Tubeless: TLR Tubeless Ready We're using most common rim bed design. Its advantage are excellent rolling resistance, fewer punctures and easy mounting tire.- Tubeless: TLR Tubeless Ready We're using most common rim bed design. Its advantage are excellent rolling resistance, fewer punctures and easy mounting tire.- New Oversize hub body CNC made of AL7075 super lightweight. 3 cross straight pull for a 20% stiffer wheel and better aerodynamic performance. Super precis Japanese cartridge bearings with very low friction and bigger size for long lasting. 15mm CNC made Aluminium rear axle and free hub. Classical engagement with 3 oversize pawls and steel ratchet. New SRAM XD free hub with 3 bearings and Shimano with 2 bigger bearings, free hub Shimano and SRAM interchangeable without any