A great replacement model for older bikes that already have square taper cranks.
Shimano’s BB-UN55 bottom bracket carries the Shimano mark of a quality component. It’s a sealed cartridge unit available in a range of sizes for your mountain bike, and featuring English thread, and a JIS Square Taper axle. For convenience the BB-UN55 comes assembled and greased, all ready for installation.
Features & Specifications
- Model: BB-UN55
- Sizes: Choose from what’s displayed in the drop down menu
- Axle Style: JIS Square Taper (shimano, sugino, truvativ, and most other cranks)
- Sealed cartridge unit
- Does not include crank bolts
- Thread: English thread
- Weight: 313 grams