Shimano UN300 English Bottom Bracket
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Shimano UN300 English Bottom Bracket
High quality sealed bottom bracket with a squared taper and new chain line stabilizer for increased chain reliability.
Shimano UN300 English Bottom Bracket
Nº de artículo: 104927371

Shimano UN300 English Bottom Bracket

86% of respondents would recommend this to a friend

Nº de artículo: 104927371

PAB 31

Price Details

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

*All items will import from Estados Unidos

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Estados Unidos Importado de la tienda USA

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High quality sealed bottom bracket with a squared taper and new chain line stabilizer for increased chain reliability.
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What Stands Out

Smooth Operation
The Shimano UN300 provides exceptionally smooth pedaling efficiency, minimizing friction and enhancing rider comfort during long rides, making it ideal for both casual cyclists and serious enthusiasts.
Durable Design
Constructed with high-quality materials, the Shimano UN300 boasts a robust design that withstands rigorous usage and environmental conditions, ensuring longevity and solid performance across multiple seasons.
Versatile Compatibility
Designed to fit a wide range of bike frames and cranksets, the Shimano UN300 caters to diverse cycling setups, offering seamless integration and enhancing your bike's overall functionality.

Detalles de producto

Who Should Buy?

Suitable For
  • Casual Cyclists

    Ideal for occasional riders needing reliability and smooth operation without complex maintenance.

  • Budget-Conscious Riders

    Great choice for those seeking quality components at an affordable price, ensuring a decent performance.

  • Replacement Needs

    Perfect for users looking to replace worn-out bottom brackets without upgrading to higher-end models.

Not Suitable For
  • Competitive Cyclists

    Not suitable for racers or performance enthusiasts looking for ultra-lightweight or high-end components.

DESCRIPCIÓN DEL PRODUCTO

Shimano UN300 English Bottom Bracket

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Preguntas y respuestas de los clientes

  • Pregunta: What is the difference between the spindle lengths available?

    Respuesta: The spindle lengths provide options to fit different setups; choose based on your crankset compatibility.
  • Pregunta: Are the crankarm fixing bolts included with the bottom bracket?

    Respuesta: No, the crankarm fixing bolts are sold separately.
  • Pregunta: Can this bottom bracket be used with other types of cranksets?

    Respuesta: This bottom bracket is specifically designed for JIS square-taper cranksets.

SHIMANO Bottom Brackets Editorial Review

The Shimano UN300 English Bottom Bracket has garnered a positive reception among cyclists, particularly those looking to upgrade or maintain older bikes. Reviews highlight its smooth performance and ease of installation, making it an appealing option for both seasoned bike mechanics and beginners alike. Many users appreciated the exact fit and minimal slop, significantly enhancing their bike's drivability and efficiency. A common theme in the feedback is the joy of tackling what was perceived as a daunting task, only to find the process straightforward and rewarding. Customers have noted that the bottom bracket's bearings are exceptionally smooth, leading to an improved overall riding experience, with one user even describing their bike as having a "new life" after the installation. Additionally, the durability of Shimano products is mentioned, with some users referencing their previous bottom brackets lasting for two decades under rigorous conditions. Although some users pointed out the requirement for specific tools—like a socket and crank arm puller—these tools are Considered a worthy investment given the cost savings compared to professional bike shop services. In summary, the Shimano UN300 English Bottom Bracket is well-received for its quality, installation ease, and performance enhancement, making it a recommended choice for DIY bike enthusiasts looking to improve older models. **

Customer Reviews & Ratings

1 valoraciones de los clientes
  • 5 estrella
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  • 4 estrella
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ventajas

  • Smooth operation and zero slop
  • Exact fit and compatibility for older bikes
  • Easy installation process
  • Good value for money compared to professional installation
  • Durable, with longevity reported by previous users

Contras

  • Requires specific tools for installation, which are sold separately

Platform Trust & Buyer Confidence

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4.2/5 9477 reseñas
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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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11 September 2026 · via Trustpilot
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Información importante

  • Limitaciones: Para los productos enviados al extranjero, ten en cuenta que cualquier garantía del fabricante puede no ser válida; las opciones de servicio del fabricante pueden no estar disponibles; los manuales del producto, las instrucciones y las advertencias de seguridad pueden no estar en los idiomas del país de destino; los productos (y los materiales que los acompañan) pueden no estar diseñados de acuerdo con las normas, especificaciones y requisitos de etiquetado del país de destino; y los productos pueden no ajustarse al voltaje del país de destino y a otras normas eléctricas (lo que requiere el uso de un adaptador o convertidor, si procede). El destinatario es responsable de asegurarse de que el producto puede ser importado legalmente al país de destino. Cuando hagas un pedido a Ubuy o a sus filiales, el destinatario es el importador registrado y debe cumplir todas las leyes y normativas del país de destino.
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PAB 31

Haz tu pedido ahora y recíbelo por ahí Sunday, Septiembre 27

QTY:

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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

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

características y beneficios

  • High-quality sealed bottom bracket for durability.
  • Designed specifically for JIS square-taper cranksets.
  • Features a new chain line stabilizer for enhanced reliability.
  • Available in multiple spindle and shell lengths for versatile fit.
  • Made from extra strong aluminum for added strength.
  • Crankarm fixing bolts sold separately for customization.

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