STONE Oval Direct Mount Narrow-Wide Chainring 30-48T for Shimano M9100 M8100 M7100 MT-900 M9200 M9220

STONE Oval Direct Mount Narrow-Wide Chainring 30-48T for Shimano M9100 M8100 M7100 MT-900 M9200 M9220

STONE Oval Direct Mount Chainring for Shimano M9100 / M8100 / M7100 / MT-900 / M9200 / M9220 — 9-12-Speed MTB Narrow-Wide 30T–40T

The STONE Oval Direct Mount Chainring is designed for Shimano 12-speed MTB cranksets, including XTR M9100, Deore XT M8100, SLX M7100, MT-900, M9200, and M9220 series cranks.

Made from high-strength 7075-T651 aerospace-grade aluminum, this oval Narrow-Wide chainring provides reliable chain retention, smooth power delivery, and excellent durability for MTB riding.

With a 3mm offset and 52mm chainline, it is suitable for Boost 148 frames.

Specifications

Compatibility

This chainring is designed to fit:

• For Shimano XTR M9100 crankset
• For Shimano Deore XT M8100 crankset
• For Shimano SLX M7100 crankset
• For Shimano MT-900 crankset
• For Shimano M9200 crankset
• For Shimano M9220 crankset

It is suitable for Boost 148 frames with a 52mm chainline.

Important Notice for Shimano 12-Speed Chain Users

If you use this chainring with a for Shimano 12-speed chain, please replace the original for Shimano 12-speed quick link with another compatible 12-speed quick link, such as:

• KMC
• YBN
• SUMC
• Other compatible 12-speed quick links

The original for Shimano 12-speed quick link is too narrow and may not work properly with this chainring.

Size & Weight

Weight may vary slightly due to manufacturing tolerances.

Product Features

STONE’s updated Narrow-Wide tooth design provides stable drivetrain performance in demanding riding conditions.

• Improved anti-chain-drop performance
• Better chain retention on rough terrain
• Enhanced mud and dirt clearance
• Reduced chain noise
• Smooth chain engagement

Product Advantages

1. 7075-T651 Aerospace Aluminum

Made from high-strength 7075-T651 aluminum, this chainring offers an excellent balance of:

• High stiffness
• Low weight
• Strong durability
• Reliable wear resistance
• Long service life

2. High-Precision CNC Machining

Each chainring is CNC-machined with a working accuracy of 0.03mm, helping ensure:

• Precise crank fitment
• Stable chain engagement
• Smooth drivetrain operation
• Consistent riding performance

3. Oval Chainring Design

The oval profile helps optimize pedaling efficiency by reducing the dead spot in the pedal stroke.

Benefits include:

• Smoother power delivery
• Improved traction on climbs
• More efficient cadence control
• Better riding rhythm on technical terrain

Package Includes

• 1 × STONE Oval Direct Mount Chainring

Available Options

Each row below is one available option combination. Choose the complete combination that matches your setup.