Shimano UN55 English SQUARE-JIS 73x113mm Bottom Bracket

$23.99

  • 25% more durable than UN54 with alloy left hand cup
  • Traditional square JIS 2-degree taper crank-arm interface
  • Offered in either English (BC1.37 x 24tpi - RH/LH) or Italian (M36 x 24tpi - RH/RH) threads

$23.99

Specs