SRAM X-SYNC chainrings for Bosch bring SRAM's proven wide-narrow chain retention technology to Bosch mid-drive eMTB motor systems. Built with the specific interface and geometry of Bosch motors in mind, these rings give eMTB riders reliable 1x chain management under motor-assist torque loads.

Highlights

  • Designed for Bosch mid-drive eMTB motor systems
  • X-SYNC wide-narrow tooth profile — secure chain retention under motor-assist torque
  • Compatible with SRAM 11-speed chains (confirm speed for your drivetrain)
  • Aluminium construction for durability at eMTB torque levels
  • Available in multiple tooth counts

X-SYNC for eMTB

Wide-narrow X-SYNC teeth alternate to match the inner and outer chain link gaps, gripping the chain firmly and preventing it from bouncing off under the elevated torque of a mid-drive motor. This makes X-SYNC rings the correct chain retention solution for Bosch-powered eMTB builds running SRAM-compatible drivetrains.

Fit and compatibility

Designed for Bosch mid-drive motor chainring interfaces. Confirm your Bosch motor generation and interface type before ordering. For SRAM 11-speed drivetrain compatibility — check tooth count for your gearing requirements.

Installation. Service. Compatibility. Find all the documentation needed to set up, use, and maintain your components in the SRAM Service hub.

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Features
  • Compatible with Bosch Gen 4 motor driven E-MTB and E-Road bikes
  • An integral component of the SRAM 1x drivetrain
  • X-SYNC tall, square tooth design provides maximum chain control
  • Sharp, narrow tooth profile and rounded chamfer edges help manage a deflected chain

Specifications

Material (Chainring) Steel
Speeds n/a
Color (Chainring) Black
Compat - Yaw No
Chainring Size 14T, 16T, 18T
Bolt Circle Diameter (BCD) Direct Mount (DM)
SKU SRM-CR-XSNC-BOS-A1
Model # CR-XSNC-BOS-A1
Barcode # CR-XSNC-BOS-A1
Brand SRAM