After blowing 2 Bilstein shocks within 9 months I changed to the Boge Sachs "turbo" struts. The ride was much cleaner, not harsh like the Billies and did not bottom out, the billies still bottomed out even after chopping the bumpstop. I think the Boge Sachs is a progressive strut design since they were so much more refined yet controlled much better. I'd have to look up the shorter bumpstop I used, cost much less than the M5 stop and the height was very close.