Mavic XA Pro MTB Rear Wheel (Boost)Whether you’re into cross country (XC) racing or mountain bike (MTB) trail riding, this rear wheel is engineered for performance, wherever your ride takes you. It’s kitted out with a maxtal aluminium rim construction with SUP welding technology for exceptional strength and durability as you tackle every challenge that the mountain throws at you. Well-equipped for the most demanding of terrain conditions, this model also features Boost axle spacing for additional stiffness on your ride.Zicral Spokes and Sealed Cartridge Bearings (QRM)Built for the rigours of modern mountain bike riding, this rear wheel comes fitted with Zicral Spokes which are lighter for easier climbing and also stiffer for better energy transmission. Mavic has also used high-quality Sealed Cartridge Bearings (QRM) on this version for high durability and efficiency thanks to low play and tight tolerances.6-bolt Disc Brake Compatibility and Tubeless Ready TechnologyThis MTB rear wheel is equipped with 6-bolt disc brake compatibility, so you can enjoy powerful and responsive braking performance as you keep your momentum flowing from trail to trail. One final highlight is its tubeless ready technology, which means you can run lower tyre pressures for tubeless advantages such as lower rolling resistance, increased stability on rough terrain and fewer chances of flats or punctures.Features: Rim Material: Maxtal Aluminium with SUP welding technology Use: Cross Country (XC), Mountain Bike (MTB) Axle Size: 12x148mm Internal Rim Width: 25mm ETRTO: 622x25TSS Rim Profile: Clincher Drilling: Traditional Tubeless Ready: Yes Joint: SUP Tyre Compatibility: UST Tubeless and tubetype clincher Recommended Tyre Sizes: 46mm to 64mm (1.8" to 2.5") Valve Hole Diameter: 6.5mm Spoke Material: Zicral Spoke Count: 24 Spoke Lacing: 2 cross Wheel Hub Body: Aluminium Axle Material: Aluminium Freewheel: ITS-4 Alloy Freehub Compatibility: Shimano Brake Compatibility: 6-bolt disc brake Bearings: Sealed cartridge bearings (QRM) Max Rider Weight: For a longer longevity of the wheel, Mavic recommends that the total weight supported by the wheels doesn’t exceed 120kg, bike included ASTM Category 3: Cross country and trail riding Single or Pair: Single rear wheelManufacturer’s Part Number: LR2222100 Black 29" ShimanoBuy Mavic Wheels & Tyres from Chain Reaction Cycles, the World’s Largest Online Bike Store.