Crankbrothers tunes the Synthesis Enduro Alloy 2.0 rear wheel for stiffness, so it stays stable through impacts and holds its line under cornering loads. A narrower 28.5 mm inner width keeps rolling resistance down and sharpens the tyre edge for grip.

Highlights

• Rear-specific wheel from the Synthesis tuned front and rear system
• 6069 aluminium alloy rim with a shot-peened finish
• Crankbrothers Ratchet hub: 10° engagement, 6.6° with the 54T kit
• Boost 148 x 12 mm with SRAM XD freehub body
• 32 Pillar SR TB 2018 spokes, lifetime rim warranty

Alloy 2.0 rim

The Alloy 2.0 rim is made from 6069 aluminium alloy, which Crankbrothers says has higher tensile, yield, fatigue and shear strength for better resistance to dents and cracks. A shot-peened finish hardens the outer surface, and the reworked profile puts thicker walls where impacts land most.

Ratchet hub

The Crankbrothers Ratchet hub engages every 10° out of the box. Fit the Crankbrothers 54T Ratchet Upgrade Kit (sold separately) for 6.6° engagement. Crankbrothers offers replacement Ratchet freehub bodies in Shimano HG, HG Road and Micro Spline and SRAM XD and XDR.

Compatibility & fit

• Position: rear wheel only
• Wheel size: 29 (622 mm ETRTO)
• Axle: Boost 148 x 12 mm
• Freehub body: SRAM XD
• Rotor mount: 6-bolt
• Tyre, cassette and rotor are sold separately

Our Marrickville workshop can fit the cassette, rotor and tyre, swap the freehub body if you change drivetrains, and service the hub bearings. Fitting is a separate workshop service and is not included in the price.