A steel direct-mount chainring built for Bosch CX Gen4 eBike motors, using e*thirteen's M3 narrow-wide tooth profile to keep the chain under motor torque.

Highlights

  • Direct mount to Bosch CX Gen4 drive units
  • 52mm chainline
  • M3 narrow-wide tooth profile cuts chain noise and wear
  • Steel construction for extra durability over the aluminium version
  • Works with 11 and 12-speed drivetrains

Built for eBike torque

e*thirteen's e*spec chainrings are designed around eBike motor torque. This steel version trades some weight for extra durability over the 7050 aluminium equivalent.

Compatibility & fit

Direct mount to Bosch CX Gen4 motors only, 52mm chainline, compatible with 11 and 12-speed drivetrains.

Options

TeethWhat differs
34TSmaller ring in this range
36TLarger ring in this range
e*thirteen covers this chainring for 10 years against manufacturing and material defects, with a discounted crash-replacement option available. For warranty support, return the product to Tune Cycles and we'll manage the claim with e*thirteen's Australian distributor. This is in addition to your rights under the Australian Consumer Law — keep your proof of purchase.
  • Direct mount, Bosch CX Gen4
  • 52mm chainline
  • M3 narrow-wide tooth profile
  • Steel construction
  • 34T / 36T
MountDirect mount, Bosch CX Gen4
Chainline52mm
MaterialSteel
Tooth profileM3 narrow-wide
ColourBlack
Drivetrain11/12-speed
Teeth34T, 36T
SKU DTW-ETG-CRESPB43-PAR2
Brand e*Thirteen