Rock Shox Duke/Psylo Service Kit Replacement Parts After many miles of riding, your suspension fork will need some service to keep it operating properly. The Rock Shox Duke/Psylo Service Kit includes o-rings, glide rings, air valve caps, air valves, c-clips, bottom-out bumpers, crush washers, etc. Kits include many extra parts to cover all years and models. Does not include wiper seals or bushings. Features Manufacturer part number: 11. 4310. 704. 000Compatible with: 2003-2005 Duke XC U-Turn, 2005 Duke XC Air, 2005 Duke SL/Race Air | Rockshox | Duke/psylo Service Kit Extra Parts For All Model Years