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Left crank 170 mm square
- 170 mm
- New
€8.99 VAT included
Left crank arm – reliability and compatibility for your bike drivetrain
Product description
The left crank arm is an essential component of a bike’s drivetrain, ensuring smooth pedaling and overall crankset stability. Perfect for replacing worn or damaged original parts, this replacement crank arm delivers durability, precision, and compatibility with a wide range of single, double, or triple chainring cranksets.
Made from lightweight and sturdy aluminum, it ensures optimal power transfer from the rider to the chain while maintaining excellent rigidity. Whether you ride a mountain bike, road bike, gravel bike, or hybrid, this crank arm is designed to give your crankset a second life.
Left crank arm specifications
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Material: Forged aluminum for long-lasting durability and excellent stiffness-to-weight ratio
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Lengths Available: 165 mm, 170 mm, 172.5 mm, 175 mm (model dependent)
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Mount Type: Square taper (JIS) / Octalink / ISIS / Integrated spindle (Hollowtech II or equivalent)
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Compatibility: 1x, 2x, or 3x cranksets – MTB, road, gravel, hybrid, and urban bikes
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Color: Anodized black or silver
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Weight: Approximately 200 g (varies with length and mount type)
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Standard pedal thread: 9/16’’
Technical features
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Optimized Drivetrain: Ensures smooth, consistent pedaling in perfect harmony with the chain, chainrings, and bottom bracket.
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Enhanced Durability: Designed to withstand repeated pedaling forces, even during intense riding.
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Easy Replacement: Quick installation using common bike tools.
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Wide Compatibility: Ideal for restoring an original crankset or upgrading a worn drivetrain.
Why choose this left crank arm ?
Replacing the left crank arm improves the reliability of your crankset, eliminates unwanted play, secures the pedal attachment, and extends the lifespan of your entire drivetrain. It is a key component for maintaining efficient pedaling, optimal power transfer, and comfort on every ride.
Ideal for:
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Road bikes seeking precise pedaling efficiency
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Mountain bikes and gravel bikes subjected to shocks and torque
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Urban bikes and hybrids used daily
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Repairs and restoration of second-hand bikes