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Shimano BB-UN300-K Square Type Bottom Bracket

EBBUN300KB23XW
₹1,030
Size

In the Box

1x Shimano BB-UN300-K (68x122.5 mm (LL123)) Bottom Bracket
1x 0.7 mm Spacer

Durable and Reliable Square Taper Bottom Bracket

Description

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.

Features
  • Smooth Rotation and Reliability: Sealed cartridge bearing system ensures consistent performance and maintenance-free operation.
  • Precise Compatibility: Fits 68mm BSA threaded shells with multiple spindle lengths for optimal alignment.
  • Enhanced Durability: Shimano’s sealed design resists dirt and moisture for long-lasting use in tough conditions.
  • Chaincase Optimization: Specially designed for chaincase systems, ensuring smooth drivetrain operation and protection.
  • Effortless Installation: User-friendly setup for both mechanics and DIY enthusiasts upgrading square taper cranksets.

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
Shimano Warranty Information

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Shimano BB - UN300 - K Square Type Bottom Bracket | The Bike Affair
Shimano

Shimano BB-UN300-K Square Type Bottom Bracket

₹1,030

Size

  • 68x122.5 mm (LL123)

Type

Bottom Bracket

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

  • Smooth Rotation and Reliability: Sealed cartridge bearing system ensures consistent performance and maintenance-free operation.
  • Precise Compatibility: Fits 68mm BSA threaded shells with multiple spindle lengths for optimal alignment.
  • Enhanced Durability: Shimano’s sealed design resists dirt and moisture for long-lasting use in tough conditions.
  • Chaincase Optimization: Specially designed for chaincase systems, ensuring smooth drivetrain operation and protection.
  • Effortless Installation: User-friendly setup for both mechanics and DIY enthusiasts upgrading square taper cranksets.

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.

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