Shimano BB-UN300-K Square Type Bottom Bracket
Durable and Reliable Square Taper Bottom Bracket
Shimano BB-UN300-K Square Type Bottom Bracket - 68x122.5 mm (LL123) is backordered and will ship as soon as it is back in stock.
Pickup available at The Bike Affair, Hyderabad
- Free shipping over ₹2,000Delivered across India
- 100% genuineAuthorised dealer, manufacturer warranty
- Cash on deliveryOn orders up to ₹20,000
- Secure checkoutUPI, cards and net banking
Shimano BB-UN300-K Square Type Bottom Bracket - 68x122.5 mm (LL123) is backordered and will ship as soon as it is back in stock.
The Shimano BB-UN300-K is a durable square taper bottom bracket designed to deliver consistent performance. Its cartridge bearing system ensures smooth rotation and long-lasting reliability, ideal for various cycling applications.
Precise Compatibility: With a 68mm BSA threaded shell and a 122.5mm spindle length, the BB-UN300-K is compatible with a wide range of square taper cranksets. This bottom bracket also includes a 0.7mm spacer for precise fitment, ensuring optimal alignment and functionality.
Enhanced Durability: Built to withstand rigorous use, the BB-UN300-K features Shimano’s renowned quality and performance. The sealed cartridge design keeps out dirt and moisture, providing a maintenance-free solution that stands up to challenging conditions.
Optimized for Chaincases: Specifically designed for chaincase systems, this bottom bracket is a great choice for bikes with enclosed chain setups. It ensures smooth drivetrain operation while offering protection against environmental elements.
The Shimano BB-UN300-K is user-friendly, with straightforward installation for mechanics and DIY enthusiasts alike. Whether upgrading or replacing, it offers excellent performance and reliability for square taper cranksets.
Product details
Specifications
Specifications
| Model No | BB-UN300-K |
|---|---|
| Series | Shimano |
| Structure|For Chain Case | Yes |
| Spindle|Square Type | Yes |
| Axle Length/Shell Width (mm)|MM110|68 (BC1.37): Yes | |
| Axle Length/Shell Width (mm)|117.5|68 (BC1.37): Yes | |
| Axle Length/Shell Width (mm)|XL118|68 (BC1.37): Yes * | |
| Axle Length/Shell Width (mm)|D-NL 122|68 (BC1.37): Yes ** | |
| Axle Length/Shell Width (mm)|D-EL 127|68 (BC1.37): Yes | |
| Axle Length/Shell Width (mm)|LL123|68 (BC1.37): Yes *** | |
| Remarks | * w/ Crank Arm Fixing Screws Spec. only ** w/ Crank Arm Fixing Screws Spec. is available *** w/ 0.7mm Spacer |
|---|---|
Features
Features
What's in the box
What's in the box
Warranty and support
Warranty and support
Covered by the manufacturer's warranty. Warranty claims go through us and we deal with the brand for you.
Questions after delivery? Ask TBA Guide or WhatsApp us.
Shipping and returns
Shipping and returns
We ship across India. Shipping is free on orders above ₹2,000 and ₹99 below that. Cash on delivery is available on orders up to ₹20,000, with a COD charge that depends on the order value. For a delivery estimate, enter your pincode in the box above the add-to-cart button: it shows the courier's own estimate for your address, not a promised date. If a parcel is held up we chase the courier until it is delivered. Full shipping policy
Most Shimano products take a little longer to ship.
Returns can be started within 7 days of delivery on unused items in their original condition with all tags and packaging. Apparel, helmets, gloves and similar items are returnable; wetsuits and products discounted by more than 5% are not. Compatibility questions are not grounds for a return unless our listing was wrong, so ask us before you order if you are unsure. Return shipping is arranged by you; on an accepted return you can choose an exchange, store credit or a refund after shipping and transaction charges. Orders can be cancelled only until they are processed. Full return and refund policy
