WHEELS Mfg T47A Bottom Bracket

The 'a' stands for asymmetrical. This specific bottom bracket is designed for frames with an asymmetrical T47 shell, which is commonly found on certain road and gravel bikes to accommodate specific drivetrain geometries.

Yes, this unit is compatible with 22mm/24mm GXP crank spindles. If you are running a standard 24mm spindle, you may need the appropriate adapter or spacer kit depending on your specific crank model.

Yes, the sleeve is essential. It protects the internal bearings from debris and moisture while also preventing your internal cables or hoses from rubbing against the rotating crank spindle.

These bearings are fully serviceable. You can clean, grease, or replace the Enduro ABEC-3 bearings individually, which helps extend the lifespan of the bottom bracket significantly compared to press-fit alternatives.

You will need a bottom bracket tool with a 48.5mm x 16-notch pattern. This is a standard size for many Wheels Mfg and similar threaded bottom brackets, but it is worth double-checking your current toolset before starting.

Yes, it is important to note that the drive-side cup uses a left-hand thread, while the non-drive side uses a standard right-hand thread. Always verify the markings on the cups before tightening to avoid cross-threading your frame.