Brand New Bitubo XXF31 Rear shock for sale, complete with Hydraulic Spring Preload Adjuster, 4 springs (ranging from 7.5 - 9.0) 8.5 is currently on the shock, spare inserts and manual. 320 mm between centers, with at least 15 mm adjustment either way. Purchased this for a project bike that never happened. $1000-00 obo Contact Rob [email protected]