MTB BB

  -Improved driving rigidity -Close ratio gear combination for minimum shifting gap and maintaining rhythm -Enhanced chain retention -Better sealing and better rotation -Various choices for bike and riding style -More durable chainwheel...

-SPECIALIZED車專用

-Lightweight to offset weight disadvantage of drivetrain -Smoother rotation -Better sealing performance -Durable enough for mountain bike usage -Fits various frame designs -SM-BB93 for threaded bottom bracket -SM-BB94-41A for press-fit bottom...

- Better sealing and rotation (SM-BB52) - Better sealing performance - Use FD-T4000-TS/DS in combination with this crankset - HYPERDRIVE SG-X chainrings - With chain guard, without chain guard - Better sealing performance...