Specifications

• Length: 170mm

  • The 170mm crank length is a standard size for adult riders, providing an ideal balance between pedaling efficiency and comfort.
  • It helps improve power transfer by leveraging pedal strokes, suitable for both recreational riders and more performance-focused cyclists.

• Spindle Type: Square Taper JIS (Japanese International Standard)

  • Designed specifically for the Square Taper JIS bottom bracket interface, this crank arm uses a square diamond taper that ensures a secure fit when installed on compatible bottom brackets.
  • Square Taper JIS is a widely compatible and easy-to-maintain interface, found on many road, mountain, and hybrid bikes. This type is popular due to its reliability and straightforward installation process.

• Design: Square Taper JIS (Diamond)

  • The Diamond design of the Square Taper JIS offers a four-sided connection point that fits seamlessly onto a square taper spindle, securing the crank arm to the bottom bracket.
  • This design enhances the stability of the connection, ensuring consistent performance and minimizing the risk of the crank arm loosening over time.

• Size: Left Arm Only

  • This product is specifically the left crank arm, designed for use as a single replacement piece. The left-side arm makes it suitable for bikes where only the left crank arm needs replacement.
  • Ensuring compatibility with a matching right crank arm that also uses the Square Taper JIS interface will provide a cohesive setup and optimized performance.

• Material: Alloy

  • Constructed from lightweight yet durable alloy, which reduces overall bike weight while providing excellent strength and resilience.
  • Alloy materials also offer natural resistance to corrosion, making the crank arm ideal for long-term use in various weather conditions.

• Color: Chrome

  • The chrome finish gives this crank arm a classic, polished look, adding a sleek aesthetic that complements many bike styles.
  • Chrome not only enhances appearance but also provides an added layer of protection, making the arm more resistant to scratches and wear.

• Brand: AltaLine

  • AltaLine is a trusted brand known for producing high-quality, durable bike components and accessories. Their products are often compatible with a variety of bike types, making them a popular choice for riders looking for reliable replacement parts.

Compatibility

• Bottom Bracket:

  • This crank arm is compatible with Square Taper JIS bottom brackets, which are commonly used in many types of bicycles, especially older or entry-level models.
  • Square taper bottom brackets are known for their simplicity and reliability, making this crank arm a suitable choice for both vintage restorations and general replacements.

• Bike Types:

  • Road Bikes: Especially compatible with older or classic road bikes using Square Taper JIS bottom brackets.
  • Mountain Bikes: Suitable for many mountain bikes, especially those with simpler or entry-level drivetrains.
  • Hybrid and Commuter Bikes: Hybrid and city bikes commonly use square taper systems, making this crank arm a versatile choice for urban riders.
  • Vintage and Classic Bicycles: This crank arm is ideal for those restoring vintage bicycles, as the square taper interface was widely used on older models.

Key Benefits

• Durability and Lightweight: The alloy construction provides the crank arm with a great balance of strength and weight, allowing for durability without compromising on ease of handling.
• Easy Replacement: Designed specifically as a left crank arm, it’s perfect for riders looking to replace only the left side without purchasing a complete crankset.
• Sleek Aesthetic: The chrome finish not only adds a polished look to the bike but also increases resilience against wear and corrosion, keeping it looking new for longer.

Considerations

• Single-Sided Replacement: This product is intended only for the left side. Ensuring compatibility with a matching right-side crank arm of the same length and design is recommended.
• Installation Compatibility: Verify that your bike is equipped with a Square Taper JIS bottom bracket to ensure compatibility.