Product Description
The Shimano BB-UN300 Bottom Bracket is a quality square type bottom bracket for your standard chainset. Get improved durability and a smooth ride.
- Cartridge bearing square bottom bracket
- MTB standard structure
- Better chain line stability with chain line stabilizer
- Tourney A070 Series
- Shimano high quality/performance
- Adapter material: Aluminum
- Bottom Bracket Shell I.D.: 1.37
- Threaded BB shell width: 68mm
- BB/Frame Interface: English
Availability & Sizing
Product Details
Price History
Historical Data
Last 1 days of price history
| Date | Low Price | High Price | Average Price | Vendors |
|---|---|---|---|---|
| May 8, 2026 | $18.00 | $18.00 | $18.00 | 1 |
Price Statistics
Description
The Shimano BB-UN300 Bottom Bracket is a quality square type bottom bracket for your standard chainset. Get improved durability and a smooth ride. Cartridge bearing square bottom bracket MTB standard structure Better chain line stability with chain line stabilizer Tourney A070 Series Shimano high quality/performance Adapter material: Aluminum Bottom Bracket Shell I.D.: 1.37 Threaded BB shell width: 68mm BB/Frame Interface: English
Additional Info
Vendor Comparison (1 stores)
Some buy links are affiliate links. StoreStream may earn a commission on purchases at no extra cost to you. Affiliate relationships do not affect product ranking or pricing accuracy. See our editorial policy.
| Vendor | Price | Stock | Last Updated | Action |
|---|---|---|---|---|
Sports Basement Best Price | $18.00 | Out of Stock | 5/8/2026 | View Product → |
Available Sizes & Variants (1)
| Variant | Size | Color | Price | Status | Stores | Buy |
|---|---|---|---|---|---|---|
Grey / One Size | One Size | Grey | $18.00 | In Stock | 1 store | Buy |
