WHEELS Mfg T47A Bottom Bracket

The 'A' stands for asymmetrical. This specific version is designed for frames with an asymmetrical bottom bracket shell width, typically found on certain Cervélo models. You must ensure your frame is specifically T47A compatible, as it differs from standard T47 bottom brackets.

No, this specific model is designed exclusively for 30mm spindle cranks. If you have a 24mm spindle, you will need a different bottom bracket or a specific adapter, though we generally recommend matching the bottom bracket to your crank spindle diameter for the best performance.

Yes, the sleeve is highly recommended. It acts as a barrier against dirt and moisture, and more importantly, it prevents your internal cables, wires, or hydraulic hoses from rubbing against the rotating crank spindle, which could cause damage over time.

The Enduro ABEC-3 bearings are designed to be easily serviced or replaced. You can remove the cups from the frame using a standard 48.5mm x 16-notch tool, allowing you to access the bearings for cleaning, re-greasing, or pressing in new replacements when they eventually wear out.

You will need a bottom bracket tool with a 48.5mm x 16-notch pattern. This is a common standard for T47 bottom brackets, but it is worth double-checking your current toolset to ensure it fits this specific diameter and notch count.