Thank you for the link - so it extends life of parts rather than “improves/softens” the ride. The cost appears worth it though I guess.
Cheers
HB
Without some form of cover over the rebound spring, road dirt will contaminate the grease and you can expect around 10,000 miles (or less) between suspension overhauls. With a cover / gaiter, then expect in excess of 25,000 miles.