
( Brand: Shimano ), ( Manufacturer Part Number: FC-M640 ), ( Bottom Bracket Interface: Hollowtech Ii ), ( Type: Crank Arms ), ( Material: Aluminum ), ( Number Of Chainrings: Single ), ( Crankarm Length: 165mm ), ( For Bike Type: Dirt Jumper ), ( Color: Black )
The Shimano Zee FC-M640/M645 Crankset is an exceptional upgrade for your mountain bike, offering robust performance and reliability in challenging terrain. This specific model features a 83mm crank arm length and is available in 165mm arm sizes, catering to a wide range of rider preferences.
Crafted with Shimano's renowned precision, the FC-M640/M645 Crankset delivers a seamless blend of power transfer and durability. The FC-M640 version boasts a direct mount design, while the FC-M645 variant incorporates a two-piece spindle structure, enhancing overall strength and rigidity. Both versions feature Shimano's Hollowtech II technology, which reduces weight without compromising on strength.
The crankset is designed to accommodate a 38t or 36t chainring, depending on your preferred gear ratio. The 83mm crank arms provide an ideal balance between power and maneuverability, allowing you to navigate technical trails with ease. The arms have been shaped for optimal ergonomics, ensuring a comfortable pedaling position even during long rides.
The FC-M640/M645 Crankset is built to withstand the rigors of off-road riding. Its durable construction, combined with Shimano's renowned reliability, ensures that you can rely on this component to perform consistently, even in the harshest conditions.
In conclusion, the Shimano Zee FC-M640/M645 Crankset is an excellent choice for any aggressive mountain biker seeking a robust, high-performance crankset that can handle the demands of off-road riding. With its 83mm crank arms and 165mm arm sizes, this crankset offers a perfect blend of power and maneuverability, ensuring a rewarding and enjoyable riding experience.
Pros of buying a Shimano Zee FC-M640/FC-M645 Crankset:1. Durability: Shimano is known for its high-quality components, and the Zee crankset is no exception. It's built to withstand harsh mountain bike conditions.
2. Compatibility: The FC-M640 is compatible with Shimano's Hollowtech II bottom bracket system, and the FC-M645 is compatible with Shimano's Hollowtech II and MegaExo bottom bracket systems. This provides flexibility in choosing the right bottom bracket for your specific frame.
3. Gearing Options: The FC-M640 and FC-M645 come in various chainring options, allowing you to choose the right gear ratio for your riding style and terrain.
4. Price: Compared to higher-end cranksets, the Zee series is more affordable, making it a great option for riders on a budget.
Cons of buying a Shimano Zee FC-M640/FC-M645 Crankset:1. Weight: The Shimano Zee crankset is heavier than higher-end cranksets. This might be a disadvantage for riders who prioritize lightweight components.
2. Aesthetics: Some riders might prefer the sleeker look of higher-end cranksets. The Shimano Zee crankset has a more utilitarian appearance.
Conclusion:If you're looking for a durable, reliable, and affordable crankset that can handle rough mountain bike trails, the Shimano Zee FC-M640/FC-M645 is a great option. Its compatibility with various bottom bracket systems and chainring options also provides flexibility. However, if weight and aesthetics are your top priorities, you might want to consider a more expensive crankset.
Recommendation:If you're on a budget and want a durable crankset that can handle mountain bike trails, the Shimano Zee FC-M640/FC-M645 is a great choice. If you're willing to spend a bit more for a lighter and potentially more aesthetically pleasing crankset, you might want to consider other options within the Shimano lineup or from other manufacturers.
Used Shimano zee FC-M645 crankset, for 83mm BB shell, 165mm arms normal wear.