SHIMANO
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Shimano Bb-Un300 Standard Bottom Bracket 73mm x 118mm
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Shimano Bb-Un300 Standard Bottom Bracket 73mm x 118mm
Fits JIS square-taper cranksets for a reliable and smooth cycling experience.
Shimano Bb-Un300 Standard Bottom Bracket 73mm x 118mm
Item #: 97298719

Shimano Bb-Un300 Standard Bottom Bracket 73mm x 118mm

Item #: 97298719

USD 27

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

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Order now and get it around Thursday, July 02
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Fits JIS square-taper cranksets for a reliable and smooth cycling experience.
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What Stands Out

Durable Construction
Crafted with high-quality materials, the SHIMANO BB-UN300 ensures a longer lifespan and reliable performance in various cycling conditions, making it a trustworthy choice for avid cyclists.
Smooth Operation
The square taper design offers a smooth and efficient pedaling experience, allowing for optimized power transfer and reducing energy loss during cycling.
Easy Installation
Designed for straightforward setup, this bottom bracket simplifies the installation process for both seasoned mechanics and DIY enthusiasts, enabling quick bike assembly and maintenance.

Product Details

Shop Shimano Bb-Un300 Standard Bottom Bracket 73mm x 118mm online at a best price in Palau. B08C7DYM41
Item Weight0.68 lbs (310 grams)

Who Should Buy?

Suitable For
  • Casual Riders

    Ideal for casual cyclists seeking a reliable and affordable bottom bracket for recreational biking.

  • Budget-Conscious Buyers

    Perfect for those on a budget who still want quality components without breaking the bank.

  • Bike Enthusiasts

    Great for users who value easy installation and smooth operation in their bicycle builds.

Not Suitable For
  • Professional Cyclists

    Not suitable for professional cyclists needing lightweight, high-performance components for competitive racing.

  • Advanced Mechanics

    May not meet the demands of advanced bike mechanics looking for specialized or high-end bottom brackets.

  • Heavy-Duty Riders

    Not recommended for heavy riders or those who frequently ride on rough terrain requiring durable components.

Product Description

Shimano Bb-Un300 Standard Bottom Bracket 73mm x 118mm

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the compatibility of the SHIMANO BB-UN300 Bottom Bracket?

    Answer: The SHIMANO BB-UN300 Bottom Bracket is designed to fit standard English thread frames, specifically for bikes with a 73mm shell width. It accommodates a spindle length of 118mm and is compatible with square taper JIS cranksets. This makes it an ideal choice for cyclists who are looking to upgrade their current bottom bracket for improved performance in various biking conditions, such as on mountain bikes or road bikes requiring a reliable and robust connection between the frame and the crankset.
  • Question: What tools are needed to install the SHIMANO BB-UN300?

    Answer: To install the SHIMANO BB-UN300 Bottom Bracket, you will need specific tools such as a bottom bracket tool for precise installation and removal. Additionally, a crank puller will be required to remove the crankset. Having a torque wrench can also be beneficial to ensure that the bottom bracket is installed securely, optimizing performance during rides. Proper installation is crucial as it impacts bike efficiency and rider comfort, making the right tools essential for a successful setup.
  • Question: How does the SHIMANO BB-UN300 enhance cycling performance?

    Answer: The SHIMANO BB-UN300 Bottom Bracket enhances cycling performance by providing a solid and reliable connection between the crankset and the frame. Its square taper design allows for smooth power transfer during pedaling, reducing power loss. Cyclists will appreciate the increased efficiency, which is especially noticeable during climbs or long-distance rides. As it maintains alignment and reduces friction, this bottom bracket contributes to overall bike longevity and a more enjoyable cycling experience.
  • Question: Is the SHIMANO BB-UN300 suitable for mountain biking?

    Answer: Yes, the SHIMANO BB-UN300 Bottom Bracket is suitable for mountain biking. Its sturdy construction and dependable square taper design work well under the demanding conditions typical of off-road trails. The 73mm shell width makes it suitable for a wide range of mountain bike frames. Cyclists can expect improved stability and responsiveness on rugged terrains, making it a solid choice for both casual riders and avid mountain biking enthusiasts who prioritize performance.
  • Question: What materials are used in the SHIMANO BB-UN300?

    Answer: The SHIMANO BB-UN300 Bottom Bracket features high-quality materials, including durable aluminum for the cups and solid steel for the spindle. This combination ensures a lightweight yet robust structure capable of withstanding the rigors of regular cycling. Such construction helps in reducing overall bicycle weight while enhancing durability. As a result, riders can push their limits without the fear of mechanical failure, providing peace of mind during long rides or challenging trails.
  • Question: Can I use the SHIMANO BB-UN300 with a different type of crankset?

    Answer: The SHIMANO BB-UN300 is specifically designed for use with square taper JIS cranksets. Attempting to use it with other crankset standards, such as ISIS or Shimano Hollowtech II, will not provide a proper fit and could lead to performance issues or damage. Ensure to check your bike's specifications before purchasing, allowing you to seamlessly integrate the bottom bracket with your existing components for the best riding experience.
  • Question: How do I maintain the SHIMANO BB-UN300 Bottom Bracket?

    Answer: Maintaining the SHIMANO BB-UN300 Bottom Bracket is essential for ensuring longevity and optimal performance. Regularly cleaning the area and checking for signs of wear can help prevent issues. If you notice unusual sounds or stiffness when pedaling, consider disassembling and greasing the threads. Additionally, during regular bike maintenance, it’s wise to check for proper tightness and alignment to avoid unnecessary wear. This care ensures that your bike continues to operate smoothly, enhancing your cycling experience.
  • Question: What is the weight of the SHIMANO BB-UN300 Bottom Bracket?

    Answer: The SHIMANO BB-UN300 Bottom Bracket is designed to be lightweight, coming in at approximately 250 grams. This reduced weight contributes to overall bicycle efficiency, allowing for easier climbing and acceleration. The use of lightweight materials without compromising strength means that cyclists can enjoy a nimble ride without added bulk. This is particularly beneficial for long-distance or competitive riders who are conscious of their bike's weight and performance balance.
  • Question: What makes the SHIMANO BB-UN300 a reliable choice for cyclists?

    Answer: The SHIMANO BB-UN300 Bottom Bracket is known for its reliability due to its proven engineering and high-grade materials. It has been tested in various cycling conditions, making it a trusted component for both everyday cyclists and serious enthusiasts. The robust design minimizes the risk of failure during intense rides, and its compatibility with a wide range of cranksets adds to its versatility. Cyclists who prioritize stability and smooth performance find the BB-UN300 a dependable choice for their biking needs.
  • Question: Where can I buy the SHIMANO BB-UN300 Bottom Bracket in Palau?

    Answer: You can purchase the SHIMANO BB-UN300 Bottom Bracket at Ubuy, which offers a variety of cycling components and accessories. Ubuy provides a user-friendly shopping experience, allowing you to explore product specifications, customer reviews, and detailed descriptions to help make an informed decision. It's an excellent platform for finding and comparing the BB-UN300 with other cycling products, ensuring you get the right gear for your bike.

SHIMANO Bottom Brackets Editorial Review

The SHIMANO BB-UN300 Bottom Bracket has garnered a mix of reviews highlighted by its reliability and quality, attributes synonymous with the Shimano brand. Customers appreciate the precision of the measurements, noting that it’s critical to verify specifications prior to purchase to avoid compatibility issues. The importance of getting the correct size—73mm body length in particular—is stressed by users, with some mentioning discrepancies in online product images that could potentially lead to confusion. Several customers have reported satisfaction with the performance of the bottom bracket after installation, highlighting smooth bearings that promise enhanced cycling experiences. However, there have been isolated cases of threading problems, which could stem from frame defects rather than the product itself. Overall, feedback indicates that when the correct size is chosen, the SHIMANO BB-UN300 serves as a reliable and effective solution for anyone in need of a bottom bracket, especially given its rarity in larger sizes like 73mm. **

Customer Reviews & Ratings

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Pros

  • Trusted brand with a reputation for quality
  • Smooth operation of bearings reported by users
  • Correct specifications lead to satisfactory installation
  • Reasonably priced for a rare 73mm bottom bracket

Cons

  • Requires careful measurement and compatibility checks

Product Price History

Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

USD 27

Order now and get it around Thursday, July 02

QTY:

Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • Designed for JIS square-taper cranksets.
  • Hollow spindle for lightweight performance.
  • BB shell width of 73 mm for compatibility.
  • English BB/frame interface for easy installation.
  • Spindle length of 118 mm ensures optimal fit.
  • Crankarm fixing bolts available separately for convenience.