Threaded BB for 386EVO frames. Machined cups thread together for stability, increased bearing life, and simple installation and maintenance. No more creaking. Smooth operation. Fast bearing replacement. Notes: Use only bottom bracket tools compatible with 16-notch MegoEvo BB’s. (FSA MegaEvo and Park Tool BBT-29). The new Quarq DZero powermeter spiders will work with Wheels Mfg 386EVO-BB + 386EVO-SRAM adapters.