These Ohlins air spring volume spacer kits enable riders to precisely tailor the ride characteristics of the air spring on their Ohlins rear shock by clipping larger or smaller volume spacers onto the shaft within the end eye/air can cavity.This air spring volume kit enables riders to precisely tailor the ride characteristics of the air spring of the Ohlins TXC Air m.1 / m.2 rear shocks by clipping larger or smaller volume spacers onto the shaft within the end eye/air can cavityIncludes (6) spacers in all: (4) 1000 mm "C"-shaped plastic spacers, (2) 750 mm "C"-shaped plastic spacersThe 750 mm and 1000 mm spacers are bagged separately for easy identificationClips onto the damper shaft; no end-eye disassembly needed Ohlins Rear Shock Air Spring Volume Spacer Rear Shock Tune Kits UPC: 840153641206