Shimano BB-UN300 Square Taper Bottom Bracket - 107 to 127mm - 68/73mm
Bottom Bracket Axle Shimano BSA 118/73mm BB-UN300 Square
Overall Rating: 1.3 / 5 (average from multiple review sources, as of 15 Feb 2026)
Based on a total of 245 customer reviews from independent review platforms.
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Based on a total of 245 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
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£13.95
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Shimano BB-UN300 Square Taper Bottom Bracket - 107 to 127mm - 68/73mm
Overall Rating: 1.2 / 5 (average from multiple review sources, as of 22 Feb 2026)
Based on a total of 22,153 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 22,153 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
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£13.99
GBP 13.99 / Unit
Delivery from £3.99
SHIMANO BB-UN300 bottom bracket British thread,silver,73-118 mm
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£14.99
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SHIMANO BB-UN300 bottom bracket British thread,silver,73-118 mm
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£15.99
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SHIMANO BB-UN300 bottom bracket British thread,silver,73-118 mm
Overall Rating: 2.4 / 5 (average from multiple review sources, as of 23 Feb 2026)
Based on a total of 46,432 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 46,432 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
In stock. Express Delivery available with Amazon Prime.
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£16.10
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Shimano BB-UN300 Bottom Bracket British Thread (73-118 mm) Fitting: 73
Overall Rating: 3.5 / 5 (average from multiple review sources, as of 26 Feb 2026)
Based on a total of 4,551 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 4,551 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
1-3 working days
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£17.99
Delivery from £2.95
SHIMANO BB-UN300 bottom bracket British thread,silver,73-118 mm
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£18.86
Delivery from £2.99
SHIMANO BB-UN300 bottom bracket British thread,silver,73-118 mm
In stock. Express Delivery available with Amazon Prime.
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£18.90
Delivery from £4.49
SHIMANO BB-UN300 bottom bracket British thread,silver,73-118 mm
Usually dispatched within 4 to 5 days
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£19.48
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Product information
At a glance
- Superior Stability: Reduces movement for a firm connection.
- Smooth Setup: Easy installation for quick rides.
- Sleek Aesthetics: Modern look complements any bicycle.
Note: This text was created with the help of AI.
Get Ready to Elevate Your Cycling Experience!
The Shimano E-BBUN300C18X is the perfect choice for cycling enthusiasts who want to enhance their ride with state-of-the-art technology. Whether you're a casual weekend rider or a serious mountain biker, this bottom bracket will elevate your performance. Designed specifically for electric bikes, it seamlessly integrates with various setups, providing you with the support you need to conquer any terrain with confidence. Discover more about quality Bottom Brackets to suit your cycling style.Unmatched Performance and Functionality
One of the standout features of the Shimano E-BBUN300C18X is its exceptional durability. Crafted from high-quality materials, it ensures a longer lifespan and reliable performance, even under the most challenging conditions. Here is what sets it apart:- Enhanced Stability: The design minimizes play and provides a solid connection between your crankset and frame.
- Effortless Installation: With user-friendly installation instructions, you'll be up and riding in no time.
- Lightweight Design: Weighing in at just the right amount, it won't weigh you down while you’re out on the trails.
Stylish and Functional Design
The Shimano E-BBUN300C18X not only focuses on performance but also boasts a sleek, modern design that integrates beautifully with your bike. Its clean lines and attention to detail reflect Shimano's commitment to excellence. The finish is both stylish and functional, ensuring that dirt and grime don’t easily accumulate. Plus, it’s compatible with various frame types, adding versatility to your bike's aesthetics.Why Choose Shimano?
Choosing Shimano means investing in quality and reliability. The E-BBUN300C18X is backed by Shimano's renowned engineering and innovation, giving you peace of mind with your purchase. Riders who have experienced this bottom bracket rave about its smooth operation and impressive performance. By opting for this option, you're not just getting a product; you're investing in an enhanced biking experience that allows you to push your limits and enjoy your rides even more!Note: This text was created with the help of AI.
Pros and cons
Pros
- Enhanced stability for better rides
- Effortless installation process
- Lightweight for trail efficiency
- Stylish design with versatility
Cons
- May not suit all bikes
- Price reflects high quality
Note: This text was created with the help of AI.
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Shimano BSA 118/73mm BB-UN300 Square Bottom Bracket Axle.
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