Shimano SM-CRM85 XT 12-Speed Single Chainring with DCE Technology

The Shimano SM-CRM85 XT 12-speed single chainring is a precision-engineered component designed to elevate mountain biking performance. Crafted to replace worn or damaged chainrings, it ensures your drivetrain maintains smooth, reliable shifting essential for demanding trail conditions. This chainring combines lightweight construction with robust materials, striking an optimal balance between durability and precision that serious riders require.

Incorporating Shimano’s advanced DYNAMIC CHAIN ENGAGEMENT+ technology, the SM-CRM85 XT enhances chain retention and pedalling smoothness even under high torque scenarios. Its optimised tooth profile works seamlessly with Shimano’s 12-speed HG+ chains, improving power transfer and drivetrain efficiency. Compatible with Shimano’s FC-M8100, M8120, and M8130 1X cranksets, this chainring is available in multiple sizes and features a composite build of steel teeth, a CFRP body, and aluminium arms, ensuring long-lasting performance and reliability. Explore more from the Bikes category to complement your setup.

Key Features & Benefits

• Advanced Chain Retention: Utilises Shimano’s DYNAMIC CHAIN ENGAGEMENT+ technology for superior chain grip and smoother pedalling under high torque.
• Optimised Tooth Profile: Designed specifically for Shimano 12-speed HG+ chains to maximise power transfer and drivetrain efficiency.
• Durable Composite Construction: Combines steel teeth, CFRP body, and aluminium arms to provide a lightweight yet robust chainring built for longevity.
• Wide Compatibility: Fits Shimano FC-M8100, M8120, and M8130 1X cranksets, facilitating straightforward installation and integration.
• Multiple Size Options: Available in various tooth sizes to suit different riding preferences and gearing requirements.

What It’s Good For

• Replacing worn or damaged chainrings to restore optimal shifting performance and drivetrain reliability.
• Providing a lightweight yet rigid solution for precise gear changes under heavy load during mountain biking.
• Enhancing chain retention and pedalling smoothness on technical trails with Shimano’s DYNAMIC CHAIN ENGAGEMENT+ technology.
• Improving power transfer efficiency when paired with Shimano 12-speed HG+ chains for competitive or recreational riding.
• Easy integration with Shimano 1X cranksets, ensuring compatibility and reliable performance.

What It’s NOT Good For

• Use with non-Shimano 12-speed chains or cranksets lacking proper compatibility, which may impair performance.
• Installation without the Shimano TL-FC41 front chainring direct mount tool, necessary for correct fitting.
• Applications requiring multi-chainring setups, as this product is designed exclusively for 1X systems.
• Riders seeking chainrings outside the available tooth size range of 28T to 36T.

Frequently Asked Questions

Is this chainring compatible with all Shimano 12-speed drivetrains?
It is specifically engineered for Shimano’s 12-speed HG+ chains and compatible with FC-M8100, M8120, and M8130 1X cranksets, ensuring optimal performance within these configurations.

Do I need any special tools to install this chainring?
Yes, installation requires the Shimano TL-FC41 front chainring direct mount tool to guarantee proper alignment and secure fitting.

Are multiple sizes available to accommodate different riding styles?
Yes, the chainring is offered in a range of tooth sizes from 28T to 36T, allowing riders to select the best option for their terrain and cadence preferences.

What accessories complement this chainring?
Complementary components include Shimano 12-speed HG+ chains, compatible pedals, and protective gear such as helmets and lights. Explore our chains and accessories collections for suitable options.