The RockShox SVC SID Luxe Air Sleeve Service Kit is recommended for servicing your RockShox SID Luxe rear shock Air Sleeve every 50 hours. The kit includes all of the Shock's air seals. To get the best performance out of your RockShox rear shock, this kit is necessary for the important maintenance of the shock. You would install using the Dynamic Seal Grease and 15W 50 air can lube, which is included in the kit.