Used Specialized Epic M4 frame with the Brain Shock. Large size 68mm BB shell 34mm headtube 135mm QR Dropouts 30.9mm seat tube (shimmed 27.2mm seat post is included in sale) Frame bearings are in good order. I have serviced the shock for the new owner. No seals have been replaced as there were no leaks, but it has been stripped, cleaned, rebuilt, rebled and recharged to get the Brain system working. Fox oil used. Obviously some visible wear to the shock body but this doesn't seem to affect the seals or performance. Working as it should - locked out on smooth surfaces then active over bumps. Any questions please ask!