Wheels Manufacturing Shim 25.4mm to 31.8mm – N/A
The Wheels Manufacturing Handlebar Shim 25. 4mm to 31. 8mm is a precision machined from 6061 aluminium and is for setting up smaller bars with a larger stem diameter. Place the shims in a 31. 8mm diameter stem, and it allows you to run 25. 4mm diameter bars.