BSA30 Bottom Bracket Gravel

BSA comes from British Standard Cycle, aka English threading. English threading on road bikes mean a 68mm 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, to fit in the tight space of this 34mm spindle.

Our Gravel bottom brackets are built with CeramicSpeed Coated bearings and equipped with UFO Long Life Grease for the ultimate in durability and protection in all environments.

The cups come with CeramicSpeed Bearings installed, coated bearings and hardened-steel races for longer life and less bearing drag.

In The Box

• 2 threaded cups with bearings installed.
• 2 1mm spacers.
• 2 0.5mm spacers.
• 2 dust covers.
• O-ring
• CeramicSpeed Long Life Grease.
• Sticker sheet.
• Spacertube.

Technical Data

English threading is easy to work with and the drive side cup, thanks to being reverse-threaded, stays in place without any extra effort. The threaded extension is thin, as they need to fit a 30mm spindle inside the cups.

The spindle increases efficiency, as is the CeramicSpeed system.Our CeramicSpeed Coated Bearings reduce drag by over 75% when compared to stock bottom brackets. Down to 0.3-0.4 watts per set. This is the result of hardened-steel races, coated with a unique non-corrosive surface finish and combined with CeramicSpeed Balls that are 100% smoother and 15% harder than the ceramic competition, in addition to lasting longer.