Searched and there are a lot of R11GS threads on specific issues with shocks. I thoughts I'd start this one where others can add their issues and tuning tips to build up a knowledge base. My other bike is a G650X and its nice to have one or two main threads to follow so mybe this can become a main thread on suspension talk. I'll start! On, I decided to make my low mileage (20K) gem of 1999 a keeper bike so invested $$$$ in new Hyperpros set up for my weight (220lb loaded) and riding style (80/20 road/dirt). Installed them as they came from Klaus at EPM. Easy? Supposed to be set up just for me... maybe a few clicks this way or that. Despite making a dozen or so adjustments to sag both remote hydraulic preload and rebound Problem symptoms. the rear skips and "chirps" over sharp bumps when taken above 40 MPH or so. It also chirps on sharp deceleration - coming off full throttle in say second gear. It seemed to eat up my last rear tire at about 2X the rate of the previous one. It has gotten worse with time. I have only ridden maybe 2500 miles on the shock. Some gravel and dirt but nothing really rough. Certainly not catching any air! In my mind (I'm no suspension guru) its packing down and skipping (shock not rebounding). My tech and riding buddies all thought it was shock internals as it still does this withe the rebound dialed all the way back. But here's the catch! finally took the shock off to send back for internal inspection and repair (its basically new) and replaced it with the OEM Showa (in perfect condition) but STILL have the same issue. So maybe its not the shock ? Am I on the wrong trail?? What else could be causing this? Some ideas Something bouncing or rubbing somewhere. Shock mount? Center stand? Others Swing arm bearings Front suspension set up (I've messed with its settings as much as the rear) Right now I have Hyperpro on front , Showa on rear. Front spring is heavier than rear. What else? Anyone else encounter this? Is the Paralever / Telelever system touchy? I feel like a dude trying to diagnose his own medical condition who is way off the trail. Help me think about what this could be and what to do. Thank you R1100GS inmates!!!