The MTB kit has spacers because some MTB frames have 73mm BB shells. Cuts inventory in half if they make everything to fit the 73mm shell and then include 2 x 2.5mm spacers (cost <10c) to make it fit 68mm shells.
@gbj_tester started
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The MTB kit has spacers because some MTB frames have 73mm BB shells. Cuts inventory in half if they make everything to fit the 73mm shell and then include 2 x 2.5mm spacers (cost <10c) to make it fit 68mm shells.