Shimano EW-SS302 is a disc brake type speed sensor unit for Shimano STEPS e-bike systems. It mounts at the chainstay and reads wheel speed from a lock ring with magnet fitted to the rear disc rotor, supplying the drive unit with the speed data it uses to manage assist. This variant has a 760mm EW-SD300 e-tube cable and plugs directly into the DU-EP800 drive unit.

Fits

  • Shimano STEPS DU-EP800 drive unit (SD300 / EW-SD300 wiring)
  • Used with a rear Center Lock disc rotor and Shimano lock ring with magnet
  • Compatible rotors (per Shimano exploded view): RT-MT900, RT-MT800, SM-RT70, SM-RT64, SM-RT30
Covered by Shimano's spare-parts warranty against manufacturing defects. For any warranty claim or support, return the item to Tune Cycles and we will handle it for you.
  • Disc brake type STEPS speed sensor unit (reads from disc rotor lock ring position)
  • 760mm EW-SD300 e-tube cable, 3.45mm diameter
  • Plugs directly into DU-EP800 drive unit
  • Chainstay mounting
  • Requires a Shimano Center Lock lock ring with magnet (rotor/lock ring not included)
Part numberEW-SS302
TypeSTEPS disc brake type speed sensor unit (SD300)
CableEW-SD300, 760mm, 3.45mm diameter
Connects toDU-EP800 drive unit
MountingChainstay
Compatible rotorsRT-MT900, RT-MT800, SM-RT70, SM-RT64, SM-RT30
IncludedSpeed sensor unit only (lock ring with magnet and rotor not included)
SKU SHM-IEWSS302N760
Barcode # 4550170876395
Brand Shimano