The guys over at Supercross BMX have started to switch their carbon Vision F1 over to yet another bottom bracket standard, the T47 bottom bracket.

Let’s take a quick look at what it is.

The T47 bottom bracket is a threaded bottom bracket created to address creaking issues common with press-fit bottom brackets. The standard has been around for a few years now, but only just getting traction in the BMX scene. Think of an outboard Euro bottom bracket but it has a larger diameter (47mm vs 34.6mm of the euro bb). This means bigger and better bearings for a wider range of crank spindle options. For BMX you are looking at T47 for 30mm and 24mm spindles, however you can get adapters to step the T47 down to fit a standard euro bb, but why wouldn’t you just take full advantage of what T47 offers – a more secure fit, better bearings, smoother running, and most importantly better power output.

Want to know more?

Watch this video and get the inside scoop from Bill Ryan over at Supercross BMX.