As in the title. My particular shock is model # RS-DLX-SELP-B2. I have the sram parts catalogue, and it looks as though I need: 50hr kit 00.4315.032.615 and 200hr kit 00.4315.032.617. I don't definitively know this though and kits cost a bit. I've just serviced as per 50hr interval and seals etc look fine (done about 200hr). Just want the stuff in case I damage a seal etc next time.