Reynolds Black Label Wide Trail 347 Boost MTB set Whether you're tackling some technical singletrack on your own or exploring new trails with your friends, this high-quality mountain bike (MTB) wheelset is engineered for maximum performance wherever your trail-riding adventure takes you. It features two carbon fibre rims, which give riders an excellent balance of stiffness and strength for easier climbing, while its reduced weight allows for fast acceleration without any unnecessary grams holding you back when descending down the trail.Tubeless-Ready, Hookless Rim ProfileRaising the bar for trail-riding performance, this MTB wheelset's rims are kitted out with an asymmetric rim profile that provides increased strength through more even spoke tension. Reynolds has also equipped it with a hookless rim profile for a no-burp tyre fit and easy inflation. Thanks to its tubeless-ready technology, riders will enjoy tubeless benefits such as improved traction on rough terrains, improved comfort and fewer chances of flats or punctures.Carbon MTB Wheelset with Industry Nine Hydra HubsBlack Label Mountain wheels combine Reynolds' asymmetric, hookless MR5 carbon fibre rims and Industry Nine Hydra hubs to set the bar in mountain bike wheel performance. The rim design features a perfect balance of width, depth, and layup for wheels that provide ultimate durability, riding comfort, and trail hugging traction like you've never experienced before.- Asymmetric rim profile provides a stronger wheel through more even spoke tension- Tubeless-ready, hookless rim profile for a no-burp tyre fit and ease of inflation- Precision manufactured Industry Nine Hydra that offers a revolutionary, .52 degrees of engagement and durability you can trust- Sapim CX-Ray spokes provide the ultimate combination of vertical strength and lateral compliance on Black Label enduro, trail and plus models- Lifetime warrantyFeatures: Rim Material: Asymmetric, Hookless Carbon Fibre Axle Size: Front: 15x110mm; Rear: 12x148mm, Boost Use: MTB Rim Width: Inner: 34mm; Outer: 39mm Rim Depth: 25mm Freehub Type: Multiple options available to select Tubeless Ready: Yes, tubeless-ready, hookless rim profile Spoke Type: Sapim CX-Ray Spoke Count: Front: 28; Rear: 28 Spoke Pattern: Front: 3x; Rear: 3x Hub: Front: i9 Hydra; Rear: i9 Hydra Nipple: External Alloy Engagement: .52° Pawl: 6 Brake Compatibility: Centre Lock disc brake Decal: Black water slide Included: 2x45mm Tubeless Valve Stems, 22mm Tubeless Tape installed and Reynolds Owner's Manual Wheel Size: 27.5" Single or Pair: Pair Weight: 1655g (pair)Manufacturer's Part Number: R-WC-79526 Black 27.5" Shimano Micro Spline R-WC-79531 Black 27.5" ShimanoBuy Reynolds Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.