SRAM XX and 2008-13 X0 9 and 10 Speed Pulley Kit 700x37C FastFit Wheel Chock System allows

FastFit Wheel Chock System allows for changing wheel sizes from 18” to 29” in seconds tool-free

2mm Ergonomic No Outer Diameter 32

Thicker axle and larger bearings throughout

Square JIS interface

5 Defined Color Black Drivetrain Speeds 11 Number of Chainrings Double Pedal Spindle 9/16" Rings 39/53 Rings 53/39 Spindle Interface Type SRAM/Truvativ GXP Weight 699

SRAM XX and 2008-13 X0 9 and 10 Speed Pulley Kit 700x37C FastFit Wheel Chock System allowsSRAM XX and 2008 13 X0 9 and 10 Speed Pulley Kit. Original equipment rear derailleur pulleys for SRAM rear derailleurs. TECH SPECS Fits Brand SRAM Drivetrain Speeds 9 Drivetrain Speeds 10