STONE 145BCD Round/Oval Narrow-Wide Chainring 44-60T for Campagnolo Chorus Record Super Record 11-Speed Cranks

STONE 145BCD Round/Oval Narrow-Wide Chainring 44-60T for Campagnolo Chorus Record Super Record 11-Speed Cranks

Stone 145BCD Chainring Round Oval for Campagnolo 11-speed CP Crankset 9 10 11 12-speed

The STONE 145BCD Narrow-Wide chainring is designed for Campagnolo Chorus, Record, and Super Record 11-speed cranksets.

Available in both round and oval shapes, this chainring is made for 1x drivetrain conversion and provides strong chain retention, smooth power transfer, and reliable riding performance.

Made from high-strength 7075-T651 aluminum alloy, it is CNC-machined with high precision and finished with anodizing for durability.

Product Specifications

Key Features

• 145BCD chainring for Campagnolo 11-speed cranksets
• Available in round and oval versions
• Designed for 1x drivetrain only
• Narrow-Wide tooth profile for better chain retention
• Made from 7075-T651 high-strength aluminum alloy
• CNC-machined with 0.03mm precision
• Anodized surface finish
• Compatible with most 9 / 10 / 11 / 12-speed chains(Not for AXS Flattop 12/13-speed chain)
• Includes 4 chainring bolts

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.

Compatible Cranksets

This chainring fits the following for Campagnolo 11-speed cranksets:

• for Campagnolo Chorus 11-speed
• for Campagnolo Record 11-speed
• for Campagnolo Super Record 11-speed

Please confirm your crankset is 145BCD before ordering.

Chain Compatibility

for SRAM AXS Flattop 12/13-speed Chain Notice

The standard version does not support for SRAM AXS Flattop 12/13-speed chains.

If you need compatibility with SRAM AXS Flattop 12/13-speed chains, please contact us before ordering.

Round Chainring Size & Weight

Oval Chainring Size & Weight

Weight may vary slightly due to manufacturing tolerance.

Package Includes

• 1 × Chainring
• 4 × 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, durability, and riding performance.

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

2. High-Precision CNC Machining

Each chainring is produced by high-speed CNC machining with 0.03mm processing precision.

This helps ensure:

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

3. Narrow-Wide Tooth Design

The Narrow-Wide tooth profile is designed for 1x drivetrain systems.

It helps improve chain retention and reduces the chance of chain drop during riding.

Production Time 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.

Available Options

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