Extra UK

Global Cycling Brands Distributor




  • Mountain bike's first tuned carbon wheel system for enduro riding and racing.
  • Front and rear specific wheels tuned and optimized to address the specific performance requirements and loads of mountain bike riding.
  • Compliant tuned front wheel improves handling and maximizes grip and control in turns. Wider inner rim width supports wider tire profile in front, increased volume and contact patch, and rounds tire profile to enhance turning.
  • Stiff tuned rear wheel supports peak loads and enhances stability and tracking at speed. Narrower inner rim width supports narrower tire profile in rear, improves rolling resistance, and sharpens tire edge for grip.



engagement 17º (x6)
ETRTO (27.5) 585mm
ETRTO (29) 622mm
hub Synthesis Standard
inner rim width front 31.5mm
inner rim width rear 29.5mm
outer rim width front 37.5mm
outer rim width rear 36.5mm
rim height 18mm
spoke count front 28
spoke count rear 32
spokes front Sapim D-Light
spokes rear Sapim Race
warranty lifetime (rim only)
weight per set (27.5) 1845g
weight per set (29) 1905g


MSRP Price List

Stock CodeCompatibilitySize MSRP
CRB-16287Sram XD27.5" Boost£1,500.00
CRB-16288Shimano27.5" Boost£1,500.00
CRB-16291Sram XD29" Boost£1,500.00
CRB-16292Shimano29" Boost£1,500.00
synthesis esynthesis e


Crankbrothers was established by two keen mountain bikers, Carl and Frank. Their aim has always been to develop product for riders, from their first product, the speed lever, to the now iconic Mallet DH Race pedal.

Read more about Crankbrothers »