1209881030
Shimano Bike Center Hub BSA 122.5/68mm BB-UN300 Square (D-NL)
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- SKU: 1209881030 - Ean: 4550170619152
Shimano Bike Center Hub BSA 122.5/68mm BB-UN300 Square (D-NL)
Product Features
Shimano BB-UN300 Bottom Bracket – BSA 68mm / 122.5mm – Square Tapered (D-NL)
Manufacturer: Shimano
Shimano's BB-UN300 , distinguished by its reliability, long-lasting construction, and smooth operation, is an improved successor to the popular BB-UN26 and BB-UN55 models. Compatible with the vast majority of touring, city, road, and older generation MTB bikes, this bottom bracket offers wide compatibility with its square tapered (JIS) connection and BSA thread standard.
Combining Shimano's engineering quality with an affordable price, the BB-UN300 is one of the most preferred bottom bracket models thanks to its quiet operation, high durability, and low maintenance requirements.
🔧 Wide Bicycle Compatibility
This model works seamlessly with many Shimano and compatible cranksets that use a square tapered crank arm.
✔ City bikes
✔ Trekking / Touring bikes
✔ Old-style mountain bikes
✔ Classic road bikes
⚙️ BSA 68mm – 122.5mm Axle Dimension
The dimensions of this variant are:
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Tooth type: BSA (British tooth)
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Hub width: 68 mm
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Wheelbase: 122.5 mm
These dimensions guarantee compatibility with many Shimano entry-to-mid-level cranksets.
🏆 Square Taper (JIS) Connector
Thanks to Shimano's JIS standard:
✔ Easy assembly
✔ Secure locking
✔ Quiet and smooth pedaling experience
✔ High performance with compatible cranksets
🛠️ Key Features
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Improved engineering: Successor to BB-UN26/UN55
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Durable steel body
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Reliable bearing structure.
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Wide wheelbase option (This model has a 122.5mm wheelbase)
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Compatible with: Road, city, and MTB systems.
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Low maintenance requirements
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Crank bolts are not included.
📌 Compatible Recommended Cranksets
It is fully compatible with many Shimano square tapered cranks:
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FC-M311, M315, M351, M361, M371, M430
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FC-M2000, M3000
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FC-T3010
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FC-MT100
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FC-RS200
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FC-TY301 / TY501 / TY701
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FC-TX801
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FC-A070, A073
Technical Data
| Feature | Value |
|---|---|
| Area of Use | Road, MTB, City, Trekking |
| Material | Steel |
| Connection Type | Square Cone (JIS) |
| Dental Standard | BSA |
| Body Width | 68 mm |
| Axle Length | 122.5 mm |
| Assembly | BSA Gear Bottom Bracket |
| Product Type | BB-UN300 |
📦 Delivery Scope
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1 x Shimano Bottom Bracket BB-UN300 – BSA 68 / 122.5mm
(Crank bolts are not included.)
⚖️ Weight
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Approximately: 285 g
You can contact us for any questions you may have. We will get back to you as soon as possible, within 24 hours on weekdays . We are happy to help! 🚀
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When will my order be shipped?
Your orders are usually delivered to cargo on the same day . This period may vary depending on the density during campaign periods.
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Customer service
You can reach us 24/7 by e-mail at info@ugurbisiklet.pro.
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FAQ
You can find the Frequently Asked Questions at the bottom of the product page.
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Contact Us
You can call us at +90 850 307 1550 whenever you want.
International Shipping
Continuous Discount
100% Originality Guarantee
All our products are 100% original and are offered with quality and assurance. As Uğur Bicycle, we only deliver products that we procure from reliable and authorized suppliers and that we distribute ourselves. Shop with peace of mind, pedal to quality!
Free Shipping and Free Returns
Frequently Asked Questions
📌 When will my order be shipped?
Your orders will be delivered to cargo within 1-2 business days . This period may vary depending on the density during campaign periods.
📌 Which Cargo Company Do You Work With?
Shipments are made within Türkiye with Domestic Cargo. International shipments are sent with any of the companies DHL - FEDEX - TNT.
📌 How can I track my order?
When your order is shipped, the tracking number is shared via e-mail and SMS. You can track your order on the cargo company's website with this number.
📌 How can I return and exchange a product?
You can return the products within 14 days , unused and in their original packaging. You can review our return policy for detailed return procedures.
📌 When will I be refunded for the product I returned?
Once your return is approved, your payment will be refunded within 3-7 business days , depending on the payment method you used.
📌 Do your products have a warranty?
Yes! All products on sale are under manufacturer or distributor warranty . You can check the product descriptions for warranty period and conditions.
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