To know exactly which oversized bearings you need, it is important that you measure them correctly. Measuring with a caliper is difficult, which is why this tool has been developed.
This metal disc has the exact size of the crankcase to measure the bearings, all that remains is to place the right side in the crankcase and see which one fits.
The disc has 4 sizes: standard 0.00mm and oversizes 0.50, 1.00 and 1.50mm
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