Our 19mm MID bottom bracket is a complete sealed system and uses high quality heavy duty steel bearings. The BB kit includes all the necessary hardware to install your cranks, including a pair of 6061 machined aluminum cones washers with laser etched Premium logos and a fluted center spacer.
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High quality sealed MID BB bearings for 19mm spindles.
6061 machined aluminum cone washers and fluted center spacer.
