e*thirteen's e*spec Plus crank is a purpose-built aluminium arm for the Bosch CX Gen4 eBike motor — slimmer and lower-profile than a stock arm, in this 160mm length.

Highlights

  • Aluminium (AL-6061) e*spec Plus crank arm built for e-bike motor torque
  • Slim Q-factor, low-profile crank design
  • Matched to the Bosch CX Gen4 motor interface
  • Direct-mount e*spec chainring interface (ring sold separately)
  • Ships with crankset, sticker and user manual

Built for the Bosch CX Gen4 interface

e*thirteen's e*spec Plus line replaces the stock crank arm on eBikes running the Bosch CX Gen4 motor with a slimmer, lower-profile aluminium arm, keeping the e*spec direct-mount chainring interface so you can run e*thirteen's own e*spec rings.

Compatibility & fit

  • Crank arm length: 160mm
  • Motor fit: Bosch CX Gen4 (as listed by e*thirteen)
  • Chainring: e*spec direct mount, sold separately
  • Colour: Stealth Black, standard decals
  • Package: crankset, sticker, user manual
e*thirteen covers this crank for 10 years against manufacturing and material defects from the date of purchase; crash, impact or misuse damage qualifies for a discounted replacement under e*thirteen's crash-replacement policy. This is in addition to your rights under the Australian Consumer Law, so keep your proof of purchase. For warranty support, return the product to Tune Cycles and we'll manage the claim with e*thirteen's Australian distributor.
  • Aluminium (AL-6061) e*spec Plus arm
  • Built for Bosch CX Gen4
  • Slim Q-factor, low profile
  • Direct-mount e*spec chainring interface
  • Crankset, sticker and manual included
Crank arm length160mm
Motor fitBosch CX Gen4
MaterialAluminium (AL-6061)
Weight (bare crank, e*thirteen spec)502g
ChainringNot included — e*spec direct mount, sold separately
ColourStealth Black
SKU DTW-ETG-CAESPPB4160K
Barcode # 4710751507869
Brand e*Thirteen