Shimano UN55 73 x 113mm Square Taper English Bottom Bracket
Shimano UN55 73 x 113mm Square Taper English Bottom Bracket
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$ 29.99 USD
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$ 29.99 USD
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SKU:EBBUN55C13
The Shimano UN55 73 x 113mm Square Taper Bottom Bracket is a high-quality, durable bottom bracket that is specifically designed to fit JIS square-taper cranksets. It features a hollow spindle for reduced weight and improved performance, as well as a square taper JIS interface for easy installation. With a bottom bracket shell width of 73mm, a shell ID of 1.37", and a spindle length of 113mm, this bottom bracket is compatible with English-threaded frames. It also comes in silver color, weighs 330g and the crankarm fixing bolts are not included.
- Spindle Interface Type: Square Taper JIS
- BB Shell Width (mm): 73
- Bottom Bracket Shell I.D.: 1.37
- Spindle Length: 113
- BB/Frame Interface: English
- Defined Color: Silver
- Weight: 330
What Size?
Finding the right size bicycle is important for a comfortable and enjoyable ride. There are various frame sizes available that are designed to fit riders of different heights, as well as different wheel sizes and frame styles. To choose the best fit, you can look at the sizing and geometry chart provided by the manufacturer. This will show you the seat tube length and top tube length, which can affect the stand-over clearance and comfort of the bike. You want to aim for a comfortable position that isn't too cramped or stretched out. If you have any questions about finding the right size bike for you, our team of experts is always happy to help.
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Kids Bikes:
| Child height (Inch) |
Child height (cm) |
Wheel size |
|
2’9”-3’1″ |
85-90 cm cm | 10/12 inches |
| 3’1”-3’3″ | 90-100 cm | 12/14 inches |
| 3’3”-3’7″ | 100-110 cm | 14/16 inches |
| 3'7"-3'8" | 110-115 cm | 16/18 inches |
| 3’8”-4’0″ | 115-120 cm | 18/20 inches |
| 4'0”-4’5″ | 120-135 cm | 20/24 inches |
| 4'5"-4'9" | 135-145 cm | 24/26 inches |
| 5 inches+ | 145 cm + | 26 inches |
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Mountain Bikes:
|
Adult height (Inch) |
Frame Size (Inches) | Frame size |
| 4'10-5'2" | 13 - 14" | X-Small |
| 5'2-5'6" | 15 - 16" | Small |
| 5'6-5'10" | 17 - 18" | Medium |
| 5'10-6'1" | 19 - 20" | Large |
| 6'1-6'4" | 21 - 22" | X-Large |
| 6'4-6'6" | 22 - 24" | XX-Large |
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Road Bikes:
|
Adult height (Inch) |
Frame Size (Inches) | Frame size |
| 4'10-5'2" | 47-48 cm | XX-Small |
| 5'2-5'6" | 49 - 50 cm | X-Small |
| 5'3-5'6" | 51 - 53 cm | Small |
| 5'6-5'9" | 54 - 55 cm | Medium |
| 5'9-6'0" | 56 - 58 cm | Large |
| 6'0-6'3" | 58 - 60 cm | X-Large |
| 6'3-6'6" | 61 - 63 cm | XX-Large |