Detailed Specifications

1. Shell Width: 73mm

• This bottom bracket is designed for a 73mm shell width, which is common in mountain bikes and some hybrid bikes. This width ensures compatibility with various bike frames that require this specific measurement.

2. Spindle Type: SQR JIS (Square Taper JIS)

• The Square Taper JIS spindle type allows for easy installation and a secure fit for crank arms, making it a widely accepted choice among bike manufacturers and mechanics.

3. Material Cup Body: Steel

• The cup body is made from steel, offering durability and strength necessary for supporting the pedaling forces experienced during riding, ensuring longevity.

4. Interface: ENG (English Thread)

• This bottom bracket features the English threading (ENG) standard, which is generally a thread size of 1.37" x 24 TPI. This threading is compatible with a wide variety of bicycle frames, making it versatile for different setups.

5. Spindle Length: 118mm

• The 118mm spindle length provides flexibility in crank arm positioning, contributing to an optimal Q-factor, which affects the pedaling efficiency and rider comfort.

6. Spindle Material: Chromoly

• Made from Chromoly (chromium-molybdenum steel alloy), this spindle combines strength and lightness, making it suitable for performance-oriented bicycles while resisting deformation under stress.

7. Bearings: Sealed

• Featuring sealed bearings, this bottom bracket prevents contaminants such as dirt and moisture from entering the bearing system, resulting in smoother operation and less maintenance, thus extending the life of the component.

8. Color: Black

• The bottom bracket is finished in black, providing a sleek and aesthetic look that fits well with various bicycle color schemes and designs.

Key Features

• Durable Steel Construction:

  • The steel cup body ensures high durability and resistance against wear and tear, ideal for rough riding conditions.

• Sealed Bearings:

  • The inclusion of sealed bearings enhances longevity and performance by protecting the internal components from dirt and moisture.

• Square Taper Compatibility:

  • The Square Taper JIS spindle is compatible with a wide range of cranksets, making this bottom bracket versatile for upgrades or replacements.

• 118mm Spindle Length for Improved Flexibility:

  • The 118mm spindle length allows for adjustments in crank arm positions, accommodating different riding styles and preferences.

• Chromoly Spindle Strength:

  • The Chromoly spindle is robust yet lightweight, providing the necessary strength for effective power transfer during pedaling.

Applications

• Mountain Bikes:

  • This bottom bracket is particularly suited for mountain bikes that require robust components to handle challenging terrains and conditions.

• Hybrid and Commuter Bikes:

  • It can also be used in hybrid and commuter bicycles, offering reliability for everyday use.

• Custom Builds:

  • Ideal for custom bike builds where a 73mm bottom bracket shell is needed, ensuring compatibility with various cranksets.

Brand Information

• Neco:
  • Neco is known for producing high-quality bicycle components, including bottom brackets, headsets, and more. The brand emphasizes reliability and durability, catering to cyclists of all levels, from recreational to competitive.