SR Suntour RS18 UNAIR Rear Air Shock - Rebound Adjust - Lockout - 145 x 35mmSR Suntour RS18 UNAIR Rear Air Shock Rebound Adjust Lockout 145 x 35mm The UnAir rear shock combines World Cup level performance with our unique Quick Service Product (QSP) for easy maintenance and adjustability. Can easily be converted to 185X50mm with spacer, let us know. LO R version with adjustable rebound and 80% lockout (high compression mode). Model: LO R RS18 Attitude: Rebound Lockout Dimensions: 145x35mm Colour: Black & grey Blow off system