
Promax ST-1 Features
Each 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.- Each 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
Product Specifications
Product Specifications
BB Shell Width (mm) |
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BB/Frame Interface |
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Bottom Bracket Shell I.D. |
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Defined Color |
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Spindle Interface Type |
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Spindle Length |
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Weight |