ST-1 bottom bracket is hand assembled using a steel spindle, sealed bearings, forged and CNC-machined alloy cups and a composite center spacer/seal.
- Steel spindle
- CNC-machined alloy cups
- JIS taper
ST-1 bottom bracket is hand assembled using a steel spindle, sealed bearings, forged and CNC-machined alloy cups and a composite center spacer/seal.