Mavic Aksium Elite Road WheelsetThe Mavic Aksium Elite is an evolution of the Aksium wheel system, designed to increase its sporting capabilities on any kind of ride. It is lighter weight for improved climbing ability and easier acceleration without compromising on stiffness Features:Rims: Material: S6000 Aluminium Height: 21mm Joint: Sleeved Drilling: Traditional with H2 reinforcement Brake Track: UB Control Valve hole diameter: 6 5mm Tyre: Clincher ETRTO size: 622x17C Recommended tyre sizes: 25 to 32mmTyre: Yksion Elite Guard front and rear Tread: Single Compound Breaker: Polyamide, from bead to bead Casing: 120TPI Max. Pressure: 7.7bars - 110PSISpokes: Material: Steel Shape: Straight pull, bladed Nipples: Brass, ABS Count: 20 front and rear Lacing: Radial front and rear non-drive side, 2-cross rear drive sideHubs: Front and rear bodies: Aluminium Axle material: Steel Sealed cartridge bearings Freewheel: FTS-L steelWeight: Tyre: 230g (700x25c); 245g (700x28c) Front without tyre: 815g Rear without tyre: 970g Pair without tyres: 1785gTechnologies: QRM (Qualité de Roulements Mavic): Mavic only uses high quality sealed cartridge bearings. On QRM wheels, they feature double sealing (2RS or LLU) together with tight C3 internal clearance. FTS-L (Force Transfer System Light): Reinforcement of key transmission components: the contact area between the pawl and the hub body is reinforced by 2 stainless steel inserts, which allows the use of a 100% aluminium hub body. H2 (Hammer Hardening): Local strengthening of the rim in the area where the spokes exert the greatest stress. UB CONTROL (Usiné Brut Control): The braking surfaces are precisely CNC machined Buy Mavic Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.