Bottom bracket Rotor BB1 BB BSA

Black cups, ceramic bearings.

Use of new non-contact labyrinth seals for exceptional fluidity and unrivalled protection against dust, water and mud.
Developed in partnership with the CERVELO TEST TEAM during the 2009 season.
The new shape of the plastic covers has significantly improved lateral compression and resistance to deformation.
The elegant new bowl design offers a modern look , combining gentle curves and sharp edges.
Compatible with all ROTOR cranksets (standard BB24), Shimano and SHIMANO.

Does your bike creak when you press hard on the pedals, or has the crankset movement lost its smoothness or become slack? The symptoms are clear: it's time to change your bottom bracket. Like all the parts that make up your bike, the bottom bracket and especially its bearings are subject to wear.
Replacing it is a simple operation if well prepared, although the multiplication of bearing, bottom bracket and frame standards may discourage some. We'll try to guide you through this jungle of standards. The bottom bracket is the interface between your crankset and your frame, so the first thing to do is to identify which crankset you want to fit into which frame?
Bottom bracket internaldiameterBottom bracket widthMountingStandardRecommendedbottom bracketaxle**34.8 mm68 mmScrew onBSA / BSC24 mm / GXP / Dub 29 mm36 mm70 mmScrew onItalian24 mm37 mm90.5 mmPress onBB 90 (Trek)24 mm / GXP / Dub 29 mm41 mm86.5 mmPress onPF 86 (Shimano)24 mm / GXP / Dub 29 mm41 mm89,5 mmÀ PresserPF 90 (Shimano)24 mm / GXP / Dub 29 mm42 mm68 mmÀ PresserBB 3030mm / Dub 29 mm42 mm79 mmÀ PresserBB Right30mm / Dub 29 mm46 mm61 mmÀ PresserSpecialized30mm / Dub 29 mm46 mm68 mmÀ PresserPF 3030mm / Dub 29 mm46 mm79 mmÀ PresserBB Right PF 36030mm / Dub 29 mm46 mm86,5 mmÀ Presser386 EVO30mm / Dub 29 mm

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