The BB-UN300 Bottom Bracket is designed for optimal performance with most MTB double cranksets, ensuring smooth and efficient pedaling. Built for durability and reliability, this bottom bracket is perfect for both casual riders and serious mountain bikers. Its robust construction and precision engineering provide a seamless fit and long-lasting performance on challenging terrains.

Specifications:
- Compatible with most MTB double cranksets
- Sealed cartridge bearings for smooth operation
- Shell width: 68mm/73mm
- Axle length options: 113mm, 118mm, 122.5mm
- Weight: Approximately 280g
- Durable steel construction
- Easy installation and maintenance