Mavic Crossmax Carbon SLR 29″ Boost 
A cross-country package in carbon that has it all: The hookless CC wheels offer long-lasting lightness and stiffness at the same time. They still have enough mobility to provide a smooth ride. The tubeless wheelset is equipped with high-quality Infinity hubs, which incorporate QRM technology for automatic bearing preloading!
Features – Mavic Crossmax SL S 29″

Lightweight full carbon hookless rims: hammer up technical climbs with less effort
Lighter weight rims result in super low inertia and instant acceleration, increased traction and durability
26mm wide hookless rim profile optimized for lower tire pressures, resulting in improved grip in all conditions
New lighter and stiffer Infinity hub shells with ultra-reliable ID360 dual ratchet freewheel
Precise handling and compliance on aggressive XC terrain
Enhanced carbon fiber rim is laced with 24 straight-pull spokes
Laterally stiff and vertically compliant feel on the trail
Run lower tire pressure for better efficiency and control
26mm wide rim profile is optimized for modern tubeless XC tires
QRM Auto bearing preload technology
Product features

Use: Cross Country
Model: Crossmax Carbon SL R
Wheel size: 29″
ETRTO: 622×26
Rim type: Clincher
Tubeless: ✔
Hub: Infinity Hub
Freehub system: Instant Drive 360
Freehub: Shimano (HG9-11)
Bearings: Auto adjust sealed cartridge bearings (QRM Auto)
Rim inner width: 26mm
Hub axle system:
Rear: 12 x 148mm Boost thru axle
Spoke type: straight pull, flat, double butted
Spokes:
Rear: 24 crossed 2, contectless
Brake type: Disc brake
Brake system: Disc 6-Bolt
Recommended tyre sizes: 2.0″ to 3.0″ (50mm to 76mm)
Valve hole: Presta / SV Ø 6.5mm
ASTM Catergory: 3 – Cross Country
Recommended system weight max: 120kg (Rider + Bike + Equipment)
Material

Rim: Carbon Fibre
Hub: Aluminum
Freehub: Steel
Spoke: Steel
Nipples: Aluminum
Color

black
Weight 

Rear: 850g