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Tube Fabrication Process
How is the Hydro-form tube made?


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Bottom Bracket Shell

BB30
The BB30 provides the specifications for an oversized bottom bracket shell for a bike frame. This type of BB allows for Direct-fit, pressed-in bearings and a 30 mm spindle. The system saves weight by accepting a 30mm aluminum spindle and eliminating cups that would normally hold the bearings.

The oversized bottom bracket of the frame provides more area to attach larger down tube, seat tube and chain stays to better resist deflection from pedaling forces.
Cro-moly
O.D. I.D. L.
47.0 41.96 68
47.0 41.96 73
AL7005
O.D. I.D. L.
49.0 41.96 68
49.0 41.96 73
BB30 is lighter, narrower, stiffer and more durable than traditional bottom bracket systems. Oversized alloy spindles and bearings pressed directly into the BB shell offer weight savings up to 12%.

Standard BB
Titanium
O.D. I.D. L.
38.1 34.0 68
41.0 34.0 73
Cro-Moly
O.D. I.D. L.
38.1 34.0 68*
41.0 34.0 73*
6061 7005
O.D. I.D. L. O.D. I.D. L.
41.0 34.0 68* 41.0 34.0 68*
41.0 34.0 73* 41.0 34.0 73*
44.0 34.0 68* 44.0 34.0 68*
44.0 34.0 73* 60.5 51.0 100
Remark: * In stock Item
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