Stone 135BCD Chainring Round Narrow Wide 42 44 46 48 52 54 56T 58 60T tooth Road MTB Bike ChainWheel 9 10 11 12s speed hollow aero

Stone 135BCD Chainring Round Narrow Wide 42 44 46 48 52 54 56T 58 60T Tooth Road MTB Bike ChainWheel for CP

The STONE 135BCD narrow-wide chainring is designed for riders who need a strong, precise, and reliable single-chainring setup.

Made from high-strength 7075-T651 aluminum alloy, this chainring is CNC-machined with high precision and finished with anodizing for improved durability and corrosion resistance.

It is suitable for 1x drivetrains only and is available in multiple tooth sizes from 42T to 60T.

Product Specifications

Important Compatibility Notice

This chainring is designed for 1x drivetrain systems only.

It is not compatible with 2x drivetrains and does not support front shifting.

Chain Compatibility

Shimano 12-Speed Chain Notice

If you use a Shimano 12-speed road chain, the original Shimano 12-speed quick link may be too narrow.

For better compatibility, please replace the original Shimano quick link with another compatible 12-speed quick link, such as:

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

SRAM AXS Flattop Chain Notice

The standard version of this chainring does not support SRAM AXS 12-speed Flattop chains.

If you need a tooth profile compatible with SRAM AXS Flattop chains, please contact us before ordering. Customization is available with an extra surcharge.

Size, Diameter & Weight

Weight may vary slightly due to production tolerance.

Package Includes

• 1 × Chainring
• 5 × Chainring Bolts

Material & Manufacturing Advantages

1. Premium 7075-T651 Aluminum Alloy

This chainring is made from high-strength 7075-T651 aluminum alloy, offering excellent stiffness, strength, and durability.

The aluminum material is supplied by Aleris, a well-known USA aluminum supplier also serving aerospace manufacturers such as Airbus.

2. High-Precision CNC Machining

Each chainring is produced with high-speed CNC machining and a processing accuracy of 0.03 mm.

This ensures:

• Accurate tooth profile
• Smooth chain engagement
• Stable riding performance
• Reliable power transfer

3. Narrow-Wide Tooth Design

The narrow-wide tooth profile helps improve chain retention on 1x drivetrains and reduces the chance of chain drop during riding.

Production & Shipping Notice

Most STONE chainrings are produced after the order is placed.

Please allow 3–5 days preparation time before shipment.

Thank you for your understanding.