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Diamond-shaped Hole Compatibility:
Diamond-shaped Hole Compatibility:
Designed to fit diamond-shaped crank holes, this crank arm is compatible with a wide range of bike models, including mountain bikes and various other bicycle types. KIND REMINDER: Please check the shape of the interface of your original crank arm and don't buy it wrong!!! (This one is only on the left side!!!)
Quality Material:
Quality Material:
Made of solid steel, fully solid construction, high strength, more robust and durable, not easy to warp, long service life.
Easy Installation:
Easy Installation:
With its user-friendly design, this crank arm can be easily installed on your bike, allowing for hassle-free setup and adjustment.
Wide Application:
Wide Application:
The crank arm can be used for ordinary bikes, mountain bikes, road bikes, folding bikes, fixed-gear bikes, cross-country bikes, etc.
Strong and durable:
Strong and durable:
The Bike crankset is made of high carbon steel, which is of high strength and easy to install. The fine workmanship is ready to provide you a good usage experience.
EP
Reviewed in the United States on March 8, 2025
This 170mm Left Bike Crank Arm is a solid replacement part for those in need of a durable and easy-to-install upgrade. Right out of the box, the construction feels sturdy, with a high-carbon steel core wrapped in a protective plastic layer. It’s lightweight yet strong, making it a good option for various types of bikes, including mountain, road, and folding models.The diamond-shaped hole design is important to note—it ensures compatibility with specific crank interfaces, so checking your original setup before buying is essential. Installation is straightforward, and the fit is secure once properly tightened. It feels reliable during rides, with no noticeable flex or instability.Performance-wise, it holds up well under regular use, making it a great choice for casual riders or those replacing a worn-out crank arm. While the plastic coating adds durability and some protection against rust, it might not be as premium-feeling as a fully metal crank arm.Overall, this is a practical and budget-friendly replacement part for those who need a left-side crank arm that’s strong, easy to install, and widely compatible. Just be sure to confirm your bike’s crank shape before purchasing.
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