Progress A-prime Tubular Road Rear Wheel

THE FASTEST ROAD DISC WHEELS IN THE WIND TUNNEL 50MMAPRIME Wind tunnel test 10,4 Watt air resistance by 45Km/hGRAPHENE is the world's strongest and lightest material which offers a totally revolutionary rim technology.Fast and all round performance with the latest disc brake technology.New NITRO Ceramic Center Lock hubs with PAL-TECH technology..The new 21mm inner wide rims provide a better riding performance such as cornering, climbing, and traction.Specifications: Rims: - Available for Tubeless Ready and Tubular.- Graphene multilayer carbon fiber. - Super lightweight disc brake design. - Carbon UD and 3K spoke holes. - Air+Plus High Speed Technology. - Under clear coat transfer graphics.- ERD: 545mmProfile- Profile: 50mm- External width: 28mm- Internal width: 21mmHubs: - Nitro Ceramic Disc Center LockSpokes: - SAPIM Aero CX‐RAY 24 Straight pull.- Hand Built with alloy nipples and secure lock.- Quick release/axles: 12x100 / 12x142- Weight: Set Clincher: 1.440 gr- Set Tubular: 1.310gr- Limits: Recomended rider weight limit: 110 kgs- Recomended tyre sizes: 23mm to 32mmOptions: - Campagnolo cassette body 10/11S compatible- Sram XDR cassette body 10/11S compatibleTechnology: - PROGRESS cassettes bodies can be easily removed and replaced with no extra adjustments. Switch quickly between Shimano, Campagnolo, or SRAM cassettes.- GRAPHENE is the world's strongest and lightest material which offers a totally revolutionary rim technology. Graphene-enhanced full carbon rims are 50g lighter and 20% stiffer.- PROGRESS cassette body option SRAM XD-R compatible made of CNC aluminum. Reinforced with 3 bearings to resist high loads.- TLR Tubeless Ready We're using most common rim bed design. Its advantage are excellent rolling resistance, fewer punctures and easy mounting tire.- Rear hub with a very strong three pawl ratchet mechanism. Engagement with 3 oversize pawls and steel ratchet with 24 teeth's.- 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.- As much as possible weight reduced. Not recommendable for riders whose weight is over 90 Kg. Lightweight wheels provide much better acceleration and climb.- 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.- High precision CERAMIC bearings with maximum precision and low friction that increase durability.- 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