Mountain Bike Bottom Bracket 68 To 73mm 29mm Spindle English Threaded BB For MTB And Road Frames CNC Machined Aluminum Anodized Silver Finish 34.7mm Shell Long-Lasting Bearings For Rugged All Terrain Riding

Single MTB BB 68-73mm, 29mm Spindle, English Threaded
✔️ Lightweight CNC-machined aluminum, 34.7mm shell diameter, 29mm spindle

The bottom bracket is a precision-machined, English-threaded unit designed for mountain bike and road frames. It's ideal for MTB and folding bikes requiring 68-73mm shell widths and a 29mm spindle.

✅ Shell Width: 68/73mm
✅ Shell Diameter: 34.7mm
✅ Spindle Diameter: 29mm
✅ Weight: 80g including 5 spacers
✅ Threaded installation with 34.7mm shell diameter
✅ Snap-on outer axle spacer for smoother rotation
✅ Compatibility: 68-73mm width and 29mm spindle for MTB and road bikes

💡 What is a bottom bracket used for in mountain bikes and road bikes with sealed bearings?

Ecco una risposta utile:

- Connects crankset to frame, allowing smooth rotation and efficient power transfer - Sealed bearings resist dirt and moisture for longer life under rugged riding - Fits 68-73mm shell width and 29mm spindle on MTB and road frames with English-threaded systems