Now I am down Alice's rabbit hole. I have found a new obsession to fret over and investigate ad nauseam. I had a very long talk with Ted Porter Friday. For the GA, he suggested the Tractive suspension
. In reading the material, I understand why he is representing this brand in addition to the classic options. Tractive invented BMW ESA.
Tractive also apparently send a complete unit not requiring a swap out (to be validated). This alone saves the time of sending the old parts out and waiting for the rebuild.
The Tractive components are made using their own patented designs and carry a five-year warranty. They are fully rebuildable too. They brag the shock contains the toughest motor possible.
Ted builds the replacement set based on your weight and riding style.
"The TracTive shocks outperform the stock shocks in comfort, but also in handling. This is due to the specific damping setup with wider damping range and the electronic components used. For ESAI and ESAII we use the most reliable stepper motor available on the market. In stock shocks the stepper motor is installed in the lower eyelet. This is susceptible to water ingress inside this eyelet, the motor rusts and the damping adjustment does not function anymore. TracTive has installed the stepper motor safely higher up inside the shock absorber body. "
"For dynamic ESA the most stable and fastest valve on the market is used: the TracTive DDA valve. The electrical properties of the TracTive DDA valve are identical to the stock shocks, so there is no issue with the motorbike management system. Contrary to many of the stock dynamic technologies, the TracTive DDA valve has been developed for use in motorbike applications and has a large adjustment range in the shock absorber low speed range. This creates more comfort and more handling than the original shocks."