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The ALTUS Front Chainwheel FC-M311-L, configured with 42x32x22 teeth and a 170mm crank arm length, is engineered to meet the needs of versatile riders who demand both performance and durability from their drivetrain components. This triple chainring crankset offers an expansive gear range tailored to accommodate a broad spectrum of cycling disciplines, particularly mountain biking, trekking, and hybrid cycling.

The three-ring setup features a large 42-tooth outer ring for high-speed pedaling on flat or rolling terrain, a mid-sized 32-tooth ring for steady cruising and moderate inclines, and a compact 22-tooth inner ring designed to significantly reduce pedaling resistance during challenging climbs and technical sections. This arrangement empowers riders to seamlessly adapt to varying terrain gradients, enhancing both control and endurance.

With a crank arm length of 170mm, the FC-M311-L optimizes biomechanics by balancing torque and cadence, facilitating efficient power transfer and reducing rider fatigue. This size caters to a wide range of cyclists, ensuring ergonomic pedaling mechanics whether cruising, climbing, or sprinting.

Manufactured with premium materials and precision engineering, this chainwheel boasts robust construction that withstands demanding off-road conditions while maintaining lightness for better handling. Its compatibility with Shimano’s 7 and 8-speed drivetrain systems guarantees flawless, quick shifting facilitated by Shimano’s renowned HyperGlide technology, which smoothens gear changes and reduces chain wear.

Notably, this variant is supplied without a chain guard (W/O CG), which appeals to cyclists who prioritize weight savings, prefer aftermarket chain protection options, or maintain their bikes with regular cleaning and maintenance. Despite the absence of a chain guard, the chainwheel’s design maintains structural integrity and resilience against impact and wear.

Installation is straightforward, compatible with standard bottom brackets, and designed for secure fastening, ensuring minimal flex and maximizing drivetrain efficiency. The ALTUS FC-M311-L also supports compatibility with various frame types, making it a flexible choice for bike builders and replacement parts.

In sum, the ALTUS FC-M311-L Front Chainwheel balances versatility, reliability, and performance, making it an excellent component for riders seeking a dependable, wide-ranging gear solution that can tackle urban commutes, trail rides, and climbing challenges with equal finesse. Its precision design and durability stand as a testament to Shimano’s commitment to quality, offering a smooth, responsive cycling experience across diverse conditions.