The Eccentric Ring CR-49 is a high-performance chainring designed specifically for Shimano cranksets, featuring a dual chainring configuration with 53 and 41 teeth arranged on a BCD110 bolt circle diameter. This setup provides an optimal gear range for road cyclists seeking efficient power transfer and smooth shifting performance.

Material & Build Quality:

Constructed from AL7075 aluminum alloy, the CR-49 chainring offers superior strength and stiffness while maintaining a lightweight profile, essential for competitive cycling. The AL7075 grade aluminum is renowned for its high tensile strength and resistance to fatigue, ensuring durability under rigorous riding conditions. The satin black (S.B) anodized finish enhances corrosion resistance and adds a sleek, professional look.

Eccentric Design & Functional Advantages:

The eccentric nature of this ring allows for subtle adjustments to chain tension, improving drivetrain efficiency by minimizing chain slack and reducing the risk of chain drop. This design characteristic is especially beneficial in high-torque situations, such as sprinting or climbing, where maintaining optimal chain tension is critical.

The 53/41T chainring sizes provide a wide gear range suitable for various terrains—53 teeth for maintaining high speeds on flats and descents, and 41 teeth for climbing and technical sections. This balanced gearing enables riders to maintain cadence and power output effectively.

Compatibility & Integration:

With a BCD110 bolt circle diameter, the CR-49 chainring is compatible with a broad range of Shimano road cranksets, allowing for easy installation and replacement. The precision-machined bolt holes ensure a secure fit and minimize drivetrain noise and vibration.

Aesthetic & Branding:

The integrated C.T laser logo is not only a mark of authenticity but also adds a modern, high-quality visual detail that reflects the component’s premium craftsmanship. The satin black finish complements a wide variety of bike color schemes and enhances the overall aesthetic of the drivetrain.

Use Cases:

• Road cycling enthusiasts aiming to upgrade their crankset for better shifting and power transfer

• Riders seeking a durable, lightweight chainring compatible with Shimano setups

• Cyclists wanting improved chain tension control through eccentric design for efficient pedaling