Stone Round Chainring 3.5mm Offset Direct Mount For Easton EC90 EC90SL CINCH Crankset Road Bike Gravel 9 10 11 12s speed 38t 40t 42t 48t 50t 54t aero hollow xplr

Product Description

STONE Narrow Wide Direct Mount Chainring for Easton EC90 SL CINCH Crank Interface

This chainring is designed for gravel and road bike use. It features STONE’s newly designed narrow-wide tooth profile for better chain retention, smoother riding, improved mud clearance, and reduced noise.

Made from high-strength 7075-T651 aluminum alloy, this chainring offers excellent stiffness, durability, and lightweight performance.

Specifications

Compatibility Notice

Please check your crank interface carefully before purchasing.

This chainring fits:

• For Easton EC90 SL CINCH crank interface
• For Cranks with the same interface as Easton EC90 SL
• For Spiders with the same interface
• For Power meters with the same interface

If your crank, spider, or power meter interface is the same as the Easton EC90 SL CINCH system, this chainring can be installed.

Please also check your chain type before ordering:

• If your chain is a standard 9–12 speed chain, please choose the Standard Version.
• If your chain is a SRAM AXS Flattop chain, please choose the AXS Version.

Shimano 12-Speed Road Chain Notice

If you are using a Shimano 12-speed road bike chain, please replace the original Shimano 12-speed quick link with another compatible brand, such as KMC or YBN.

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

Weight

The actual weight may vary depending on the chainring size and model.

Features

• STONE new narrow-wide tooth design
• Better chain retention
• Reduced chain drop risk
• Improved self-cleaning performance in mud and dirt
• Lower riding noise
• High stiffness and strong durability
• Lightweight CNC-machined construction
• Suitable for gravel and road riding

Advantages

1. Premium 7075-T651 Aluminum Alloy

Made from high-strength 7075-T651 aluminum, supplied by Aleris, a USA company known for supplying aluminum materials to aerospace manufacturers such as Airbus, Boeing, and Bombardier.

This material provides excellent strength, stiffness, and long-term durability.

2. High-Precision CNC Machining

Produced using high-precision CNC equipment from Taiwan and Germany.

The machining accuracy reaches 0.03mm, helping ensure precise fitment, smooth drivetrain performance, and reliable riding quality.

Package Includes

• 1 × Bike Chainring

Production & Shipping Notice

Most STONE chainrings are made to order.

Production usually requires 3–5 days before shipment. Thank you for your understanding and patience.