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Item #:
200537442
SHIMANO Bottom Bracket Axle BSA 122.5/73mm-BB-UN300 Square (D-NL)
89% of respondents would recommend this to a friend
Item #:
200537442
IQD 62169
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from UK
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In stock
Imported from UK store
QTY:
Order now and get it around Saturday, November 07
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The powerful square bottom bracket increases output power and protects your frame.
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What Stands Out
Durable Construction
Constructed from high-quality materials, the Shimano Men's BBUN303 Bottom Bracket ensures longevity and withstands rigorous biking conditions, providing exceptional reliability for avid cyclists.
Precision Engineering
Featuring precise dimensions of 73/122.5mm, this bottom bracket delivers smooth power transfer and compatibility with various bike models, enhancing cycling efficiency and performance.
Easy Installation
Designed for quick and straightforward installation, the Shimano BBUN303 saves time and simplifies maintenance, making it accessible even for less experienced bike enthusiasts.
Product Details
Product Technical Details
| Color | Black |
| Size | 73/122,5mm |
| Height | 5 centimetres |
| Item display length | 17 centimetres |
| Weight | 0.4 Kilograms |
| Item display width | 5 centimetres |
| Material type | Aluminium |
| Power source | hand_powered |
| Included components | 1 pair of pedals |
| Batteries included? | No |
| Brand | SHIMANO |
| Department | Men's |
| Manufacturer | SHIMANO |
| Item model number | 2092872138 |
| Product Dimensions | 17 x 5 x 5 cm; 340 g |
| Guaranteed software updates until | unknown |
| Batteries | 1 12V batteries required. |
| Date First Available | 30 May 2020 |
| Is discontinued by manufacturer | No |
Who Should Buy?
-
Urban Commuters
Ideal for daily urban cyclists needing reliability and smooth performance while navigating city roads and traffic.
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Mountain Bikers
Great for riders seeking durability and consistent performance on rugged terrains and challenging trails.
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Casual Cyclists
Suitable for leisure cyclists who want a dependable bottom bracket for relaxed rides around the neighborhood.
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Professional Racers
May not meet the high-performance standards required for competitive racing environments and advanced cycling setups.
Product Description
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Customer Questions & Answers
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Question:
How to Shop SHIMANO Bottom Bracket Axle BSA 122.5/73mm-BB-UN300 Online From Ubuy?
Answer: It’s easy to shop SHIMANO Bottom Bracket Axle BSA 122.5/73mm-BB-UN300 online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location. -
Question:
Is SHIMANO Bottom Bracket Axle BSA 122.5/73mm-BB-UN300 Available to Shop Online in Iraq?
Answer: Yes, at Ubuy Iraq this product is available for you to shop at a reasonable price. The SHIMANO Bottom Bracket Axle BSA 122.5/73mm-BB-UN300 is not available locally but you can trust us with our express shipping services. -
Question:
How Long Does It Take to Get Product After Placing the Order?
Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.
SHIMANO Bottom Brackets 2092872138 Editorial Review
The Shimano Men's BBUN303 Bottom Bracket has garnered a generally positive reception among customers. Many users appreciate its longevity, with some noting that it can last around 3,000 miles before needing replacement. The product is described as precisely crafted, providing smooth performance once installed. Reviewers emphasize the importance of using the correct tools during installation, as they found it necessary to have the right equipment for a successful fit and function. Several users confirmed that the product meets the described specifications, reinforcing its reliability and compatibility with their bicycles. Additionally, some reviews highlighted the improvement in their bike's performance after replacing an older, damaged bottom bracket. The bolts have also been positively received, with some users praising the convenience of not requiring an Allen wrench for installation. In summary, customers seem pleased with the Shimano BBUN303 Bottom Bracket for its durability, smooth operation, and alignment with product descriptions, making it a solid choice for bike enthusiasts looking to upgrade or replace their bottom bracket. **
Customer Reviews & Ratings
71 customers ratings
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5 Star
76%
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4 Star
14%
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3 Star
6%
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2 Star
2%
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1 Star
2%
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Pros
- Long lifespan (approximately 3,000 miles).
- High precision and smooth performance.
- Meets product descriptions accurately.
- Improved bike functionality after installation.
- Convenient bolt design, eliminating the need for an Allen wrench during installation.
Cons
- Requires the right tools for proper installation.
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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IQD 62169
Order now and get it around Saturday, November 07
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Fastest cross-border delivery
Features & Benefits
- Strong and durable steel body.
- Absorbs rounding tolerance for easy mounting.
- Integrated system protects the frame.
- Increased output power compared to standard designs.
- Available in 3 versions for versatility.
- Stable chain line ensured by stabilizer.
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