Enduro Maxhit Stainless Steel Bottom Bracket BSA30

The Enduro Maxhit Stainless Steel Bottom Bracket BSA30 is a threaded bottom bracket that fits a 30mm-spindle crankset into a standard BSA (English) threaded frame shell. The Maxhit design uses no separate cups. The bearings thread directly into the shell instead, which gives Enduro room to fit larger bearing balls in the same space.

The bearings are machined from 440C stainless steel, so they resist corrosion better than standard steel in wet or salty conditions. A double labyrinth seal keeps water and grit out, and the bearings come filled with high-pressure waterproof grease. Retailers list a shell width of 68/73mm, so the same part covers both common BSA widths. That matters for riders with frames that see regular wet-weather mileage, or anyone who has replaced a creaky or notchy bottom bracket more than once. Enduro also lists a lifetime warranty that includes corrosion coverage.

This is the BSA30 version, Enduro part number BKSM-8142. It is not interchangeable with Enduro's 24mm or DUB versions, so check your crankset's spindle size and your frame's shell type before ordering.