CeramicSpeed BSA Bottom Bracket (Black) (73mm) (30mm Spindle) (Coated Ceramic Bearings) (MTB)

Description

BSA comes from Birmingham Small Arms, aka English threading. English threading on mountain bikes means a 73mm wide, 34mm inside diameter shell with reverse threading on the drive side. It’s the most common threaded standard employed today. This kit allows you to fit 30mm thru-axle cranks, like those from Rotor or RaceFace, to fit in the tight space of this 30mm spindle.

Features:

• Grade 3 Silicon Nitride balls
• Coated races increase bearing service life by increasing hardness of race and reducing corrosion
• Reinforced polyamide cage and non-contact seals
• Hand built in Denmark
• CeramicSpeed products with coated bearings include a 6-year warranty 

Specifications:
Frame Interface: BSA/English Threaded
Spindle Interface: 30mm Spindle
Bottom Bracket Shell ID: 1.37
Shell Width: 73mm
Bearings: Ceramic
Color: Black
Weight: 81g