Free Cont. US Shipping over $100, Excluding oversized items.
$18.00

Shimano BB-UN300 Bottom Bracket, JIS

Good quality bottom bracket that helps provide the optimal chainline for the Wabi crankset.

Size chart

RIDER HEIGHT  FRAME SIZE STANDOVER HEIGHT
5'4 - 5'7 49CM 30.2IN
5'7 - 5'10 52CM 31.3IN
5'10 - 6'1 55CM 32.5IN
6'1 - 6'3 58CM 33.6IN
6'3 - 6'6 60CM 34.8IN
Description:

Shimano's core square tape bottom bracket provides good all-around value and quality. Features a hollow spindle. Fixing bolts not included.

In general, we recommend the 107mm as a replacement for current Wabis. 110mm is recommended if you are going to 50T chainrings or larger or you are looking for a standalone option for the Wabi crankset for other frames.

Specs:
  • Spindle length: 107 or 110mm
  • Taper type: JIS 
  • Material: Steel
  • Bearing Type: Sealed 
  • Weight: 301g
  • Threading: English
Recommended Tools:

Square taper crank puller: Park Tool CCP-22

Bottom bracket removal tool: Park Tool BBT-22