Chimera Engineering solid aluminum riser bushings are a must when you change to a taller handlebar height! Taller handlebars would allow for more leverage to the bushing, therefore it would have more movement and "slop". This will eliminate unnecessary movement when you have taller bars. These are also great to replace worn out OEM rubber bushings. The solid riser bushings will also give you better feedback and feel from riding.
The OEM inside diameter hole is 12mm, select this size if you are going to use the same size riser bolts on your new set up or to upgrade the bushings to solid.
If you go with a custom handlebar set up such as SCC Tough T-Bars (1/2" bolts), then you would need to get the correct size ID for the riser bolts. Double-check the riser bolt size before ordering.
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