The SRAM Eagle Transmission E-MTB 104BCD chainring is purpose-built for electric mountain bikes running the SRAM T-Type drivetrain. The 104BCD bolt pattern and T-Type chain compatibility make it the correct replacement ring for E-MTB builds where the motor's additional torque demands a chainring designed for that load profile.

Highlights

  • Eagle T-Type chainring for E-MTB 104BCD cranksets
  • Engineered for motor-assist torque loads — stronger tooth engagement
  • T-Type chain compatible — flat-top chain format
  • 104BCD bolt circle for compatible E-MTB cranksets
  • Available in multiple tooth counts

E-MTB specific design

Motor-assisted riding puts substantially more torque through the drivetrain than unassisted pedalling — especially in high-assist modes at low cadence. SRAM's E-MTB chainrings are optimised for this load profile, with tooth geometry and material selection tuned for the torque and wear characteristics specific to eMTB use. Using a standard MTB chainring on an E-MTB will result in faster wear.

Fit and compatibility

104BCD E-MTB chainring for SRAM Eagle T-Type Transmission cranksets. Requires T-Type chain. Confirm crankset model, BCD, and tooth count before ordering. Not compatible with standard Eagle chains or non-T-Type cranksets.

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
  • 104 BCD compatible
  • Steel (34T,36T,38T)
  • Backwards compatible with X-SYNC 2
  • AeroGuard compatible
  • Hex Nuts and Bolts included

Specifications

Material (Chainring) Steel
Speeds 12s T-Type
Color (Chainring) Black
Compat - Yaw n/a
Chainring Size 34T, 36T, 38T
Bolt Circle Diameter (BCD) 104 BCD
Weight (g) 155
Weight Based On 38T
SKU SRM-CR-TTYP-104-A1
Model # CR-TTYP-104-A1
Barcode # CR-TTYP-104-A1
Brand SRAM