A forged, CNC-machined 7075 aluminium direct-mount chainring built specifically for DJI Avinox e-bike motors — a drop-in upgrade over the stock ring with e*thirteen's wear-resistant M4 narrow-wide tooth profile.

Highlights

  • Forged and CNC-machined from 7075 aluminium for a stiff, light direct-mount e-bike chainring
  • e*thirteen's M4 narrow-wide tooth profile holds the chain under motor torque
  • Cross-compatible with Shimano and SRAM 11/12-speed drivetrains, including SRAM Eagle Transmission (T-Type)
  • Direct-mount fit for DJI Avinox — not a bolt-on BCD ring
  • 8mm offset for a 55mm chainline on this motor
  • Available in 34T and 36T tooth counts

Built for the motor, not bolted on

This is a one-piece direct-mount ring that keys straight onto the motor's drive spline, not a bolt-on ring on a BCD spider. Fit is motor-specific: it is made for DJI Avinox only and is not interchangeable with e*spec chainrings for other motor platforms.

Chain and drivetrain fit

The M4 narrow-wide profile is cross-compatible with Shimano and SRAM 11/12-speed drivetrains, including SRAM Eagle Transmission (T-Type). It is not a Shimano Linkglide-pattern ring, so check your cassette and derailleur spec if you are running Linkglide.

Compatibility & fit

Offset 8mm, giving a 55mm chainline on DJI Avinox. Confirm your motor's exact generation before ordering — e*thirteen lists offset and chainline per motor platform, and a ring for one motor will not fit another even where tooth counts match. Fitting at Tune Cycles' workshop is available as a separate service.

Options

ColourBlack / Bronze — finish only, no fitment difference
Teeth34T / 36T — tooth count only; offset and chainline are the same across this range

Covered by e*thirteen's Infinite Ride Warranty: 10 years against manufacturing and material defects. A chainring is a drivetrain wear item, so normal tooth and chain-contact wear, crash or impact damage, modification and commercial use aren't covered under this policy; a discounted crash-replacement option is available instead.

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.

  • 7075 aluminium, forged and CNC-machined
  • e*thirteen M4 narrow-wide tooth profile
  • Direct mount for DJI Avinox
  • 8mm offset / 55mm chainline
  • Shimano and SRAM 11/12-speed compatible, including SRAM Eagle Transmission (T-Type)
Motor fitDJI Avinox
MountDirect mount (not BCD bolt-on)
Offset8mm
Chainline55mm
Material7075 aluminium, forged and CNC-machined
Tooth profilee*thirteen M4 narrow-wide
Chain compatibilityShimano / SRAM 11/12-speed, incl. SRAM Eagle Transmission (T-Type)
Teeth options34T, 36T
Colour optionsBlack, Bronze
SKU DTW-ETG-CR5ERA-11-PAR
Brand e*Thirteen

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