Shimano BB-UN300-K Square Type Bottom Bracket
Durable and Reliable Square Taper Bottom Bracket
- Smooth Rotation and Reliability
- Precise Compatibility
- Enhanced Durability
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.
Ordered in from Shimano Ā· ships in about 3 weeks
Pickup available at The Bike Affair, Hyderabad
Pairs well with
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 Shimanoās 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.
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
Shimano Bicycle Components Warranty:Ā Shimano warrants to the original owner that Shimano-branded bicycle components, including STEPS Drive Units and Wheels, are free from defects in materials and workmanship for a period of 2 years. DURA-ACE and XTR components, including DURA-ACE and XTR wheels, are covered for 3 years from the date of original purchase.
Shimano Footwear and Soft Goods Warranty:Ā Shimano footwear and soft goods are covered for 1 year against defects in materials and workmanship.
Lazer Products Warranty:Ā Lazer products are warranted against defects in materials and workmanship for 1 year from the date of purchase.
PRO Products Warranty:Ā PRO branded products are warranted for 2 years against defects in materials and workmanship under normal conditions. Additionally, handlebars, stems, and seat posts from the model year 2017 onwards are covered for 10 years from the date of original purchase.
Wheel Warranty:Ā Shimano warrants all wheels to be free from defects in materials and workmanship. DURA-ACE and XTR wheels are covered for 3 years, while all other wheels are covered for 2 years. Normal wear and tear parts such as bearings, spokes, and braking surfaces are not covered under warranty.
Exclusions:Ā This warranty does not cover:
- Products modified, poorly maintained, or used improperly.
- Damage resulting from accidents, abuse, or improper assembly.
- Wear and tear parts such as bearings, seals, free hubs, and decals.
- Damage due to unauthorized repairs or modifications.
- Cosmetic damage, including deterioration of the surface finish or appearance.
For any warranty claims, please contact us directly, and we will assist you with the process.
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 ā¹2,000 and ā¹99 below that. Cash on delivery is available on orders up to ā¹20,000, 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
Questions and answers
Ask our team anything about this product.
- Free shipping over ā¹2,000Delivered across India
- 100% genuineAuthorised dealer, manufacturer warranty
- Cash on deliveryOn orders up to ā¹20,000
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