Mavic XA Elite MTB Wheelset - BoostThe Mavic XA Elite wheelset is simple and fun but packed with technology in an exceptionally strong and light wheel-tyre system that is tubeless-ready High-end agile and versatile components with ISM 4D machining make the wheels lighter without compromising on strength. They feature a 25mm internal width rim with a hookless profile and the ITS 4 freewheel system makes for faster acceleration This is a simple and reliable build with 24 straight-pull bladed and double-butted spokes on both the front and rear wheels. Tubeless tape comes pre-installed on both wheels: the lightest and simplest way to get the tubeless benefits such as better traction, comfort, and reduced risk of flats Features:Rims: Material: Maxtal Joint: SUP Drilling: Traditional Weight reduction: ISM 4D Valve hole diameter: 6 5mm Tyre: UST Tubeless and tubetype ETRTO size 27 5": 584x25ss ETRTO size 29": 622x25ss Hookless profile Recommended tyre sizes: 1 4" to 2.7"Spokes: Material: Steel Shape: Straight pull, bladed, double butted Count: 24 front and rear Lacing: 2-cross front and rearHubs: Hub body: Aluminium front and rear Axle material: Aluminium Sealed cartridge bearings Freewheel: ITS-4 alloy Spacing: Front 110mm, rear 148mmWeight: Pair without tyre: 1695g (27 5"), 1770g (29") Front without tyre: 780g (27 5"), 815g (29") Rear without tyre: 915g (27 5"), 955g (29") Tyre: 780g (27.5x2 4"), 810g (29x2 35")Technologies: 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. MAXTAL: Exclusive to Mavic, this specific aluminium alloy offers a higher strength to weight ratio than conventional 6106 alloy. ISM 4D (Inter Spoke Milling 4 Dimensions): An exclusive Mavic patented concept, ISM 4D significantly reduces weight and inertia without compromising durability. Quicker accelerations, better handling and more resistance; the right mix to make the most of any ride. The smooth profile also helps reducing aerodynamic drag. ITS-4 (Instant energy transmission): Using 4 pawls working 2 by 2, Instant Transfer System 4 provides a more dynamic ride, thanks to a very fast engagement. Its versatility makes it compatible with all kinds of frame retention system. UST TUBELESS READY: The UST concept improves traction, control and comfort while reducing inertia and flats. X-mix: Dual compound (55/50) with softer side knobs offers grip while maintaining the rolling efficiency Guard +: The tyre casing is reinforced with a high density extra layer that protects from flats and gives a more supple feel for better comfort and rolling efficiency Buy Mavic Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.