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Data studies from 144 computed fitments

Original rankings computed from our own compatibility and specification dataset, covering 62 parts and 144 checked combinations. Every figure is a real count from that data, with the sample size shown and the method stated. The tables are free to cite and republish with a link.

Data as of 2026-09-05. Source: our own compatibility and specification dataset.

The most broadly compatible parts24 · Bosch Smart System (BES3) batteries and chargers fits 24 of the combinations we checked directly, more than any other of the 46 parts in the dataset.The parts most likely to need an adapter37% · Yamaha PW-X3 / PW-ST / PW-TE batteries and chargers needs an adapter or does not fit in 37% of the combinations we checked, the highest share in the dataset.Parts ranked by fitsShimano STEPS bikes fitted with the BM-E8016 reinforced external mount · Shimano STEPS BT-E8016 battery has the highest fits in the dataset, at Shimano STEPS bikes fitted with the BM-E8016 reinforced external mount.