The ESU (Electronic Steering Unit) kit replaces the mechanical potentiometer in the S2r S3r Windows steering assembly. It will address/prevent a jittery steering issues caused by system noise.
It will significantly improve the steering service life longevity because ESU does not "wear and tear".
The kit contains a pair of ESU that need to be installed in both left and right handle bars at the same time.
Not compatible with any upright models or S3r Novo.