Rotor BB1 Road Steel Bottom Bracket Italian Thread

Rotor BB1 Road Steel Bottom Bracket Italian Thread

• Weight: 91g

• Material: 100% CNC-machined, 7075 aluminum

• Labyrinth seals prevent bearing contamination

• Compatible Crankset Brand: ROTOR | Shimano

• Material Bearing: Steel

• Axle diameter compatible: 24mm

• Shell width: 70mm

• Frame Type: ITA (Italian thread)

• Discipline: Road

• Colour: Black

Rotor Steel Bottom Bracket with appealing looks and ease of use. The BB1 is incredibly light and will match up with all high end cranks with looks and performance. Will work with all 24mm axles using external bearing system.

• Replaceable bearings which is ideal for those looking to shed every possible gram while at the same time acquiring an incredibly smooth bottom bracket.

• New advanced non contact Labyrinth seals give buttery smooth spinning with unparallel protection against dust, water and mud.

• New plastic cups offer significantly improved lateral compression and deformation resistance, facilitating crisp shifting.

• Developed with the Cervelo racing team in 2009.

The Rotor BB1 Road ITA bottom bracket is suitable for chainsets that use a 24mm spindle, this includes Shimano and Rotor chainsets as well as some other brands.

The bottom bracket is only compatible with frames that have an Italian standard bottom bracket shell (M36x24TPI). With an Italian threaded shell both sides of the shell are regularly right threaded, use a 36mm diameter and a 24tpi pitch thread. This differs to the British standard where one side of the shell is reverse threaded and the cups are smaller in diameter (1.37"). The width of an Italian bottom bracket shell is also wider measuring at 70mm compared to 68mm for a British road threaded bottom bracket.