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  • 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: 2.5º quiet engagement / magnetic pawls
  • ETRTO: 585mm (27.5), 622mm (29)
  • Hub: Project 321
  • Inner Rim Width: Front 31.5mm, Rear 29.5mm
  • Outer Rim Width: Front 37.5mm, Rear 36.5mm
  • Rim Height 18mm
  • Spoke Count: Front 28, Rear 32
  • Spoke Type: Sapim CX-Ray (front), CX-Sprint (Rear)
  • Warranty: Lifetime (rim only)
  • Weight: 1760g per set (27.5), 1825g per set (29)

MSRP Price List

Stock CodeCompatibilitySize MSRP
CRB-16285Sram XD27.5" Boost£2,150.00
CRB-16286Shimano27.5" Boost£2,150.00
CRB-16289Sram XD29" Boost£2,150.00
CRB-16290Shimano29" Boost£2,150.00
synthesis E 11synthesis E 11

"They've created a serious contender in the sacred circle of high-end carbon wheels and their ride quality is certainly better than many I've ridden."
Oct 2018 - Read the review

"Crank Brothers have raised the game in the carbon wheels market. They have done what so many companies don’t bother doing: They’ve tested their prototypes and listened to feedback then reapplied it."
Oct 2018 - Read the review

"The philosophy behind the Crankbrothers Synthesis E 11 is so obvious and yet hasn’t become the industry norm…combining the stiff rear end with the compliance of the front wheel means that you can have your cake and eat it."
Oct 2018 - Read the review

"Ride quality is exceptional, you get the benefits of a compliant alloy rim without the worry of rim dings, eventual fatigue and failure."
Oct 2018 - Read the review

"It totally delivers on its performance claims and the front wheel especially feels pretty radical in just how well it tracks the terrain; reducing vibration, adding grip to the point it feels like you can corner faster and with more confidence.”"
Feb 2019 - Read the review


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 »