SRAM 900 Boost XD Disc 6-bolt Rear Hub

Extreme Versatility: the 900 Hub by SRAM
Whether you want to cross the finish line, embark on an epic adventure or just get back home, the 900 hubs are up to any challenge. Inside, the soft and resistant Double Time™ drive mechanism ensures lightning-fast activation for high and reliable pedal response. Speedball™ bearings provide smooth, long lasting rotational performance. Different spoke options, compatibility with different cassettes and interchangeable end caps make the 900 hubs the perfect choice for any bike for road racing, gravel roads, cyclocross, cross-country, trail or enduro.
Specifications:Series:900Application:All Mountain, Trail, Enduro, Cross Country, CyclocrossOver Locknut Dimension:12 x 148 mm thru-axleSpoke Hole Count:28, 32Brake Type:6-bolt discFreehub Compatibility:11-/12-speed SRAM XDFreehub:Double Time™Technical Information:Body Material:aluminiumFreehub Body Material:aluminiumBearings:cartridgeFlange Distance (L/R):60.75 mm (37.25 mm/23.5 mm)Bolt Circle Diameter (L/R):58 mm/60 mmFeatures:Double Time™ mechanism for soft, fast and resistant activationversatile drivetrain body is compatible with road or MTB drivetrains, full-use cassettes or XD cassettescompletely exchangeable end caps without toolsTechnology:Double Time™:
This straight 4-jack design gives a chainring with 26 teeth 52 contact points. The result: a smooth 6.9 degree movement without reducing tooth size or offsetting internal geometry – for enormously high long-term durability.

Seeker™:
The flanges are 3D forged and machined for maximum strength and low weight. Since they are bent in the direction of the rim, the tensioned spokes are already completely correctly aligned. The result: fewer damaged spoke heads and better overall durability.

Side Swap™:
Switching the axes has never been so easy. Side caps without thread can be mounted and swapped out by hand and without tools. The symmetrical Side Swap™ side caps can be mounted on both sides. The left side cap is identical to the right one – so you don’t have to check which cap belongs where.

Speedball™:
Only necessary settings have already been made at the factory. Every part of the ball bearing comes from exactly the same supplier, i.e. every bearing bore can be precisely matched to the raceway. With such a small tolerance range, the days where the clearance had to be adjusted after every ride are over.

Torque Caps:
Torque Caps strengthen the connection between the hub and the fork dropout by increasing the surface area that connects both. This creates a stronger and stiffer interface that provides better feedback and more control. This allows you to concentrate on the most important connection: The one between your bike and the trail.
Manufacturer Numbers:12 x 148 mm / 28 hole:00.2018.013.00812 x 148 mm / 32 hole:00.2018.013.014Contents:1 x SRAM 900 Boost XD hub (rear)not incl. thru-axle