Gearmate Single Chainring for SHIMANO 4-Arm

1x Chainring for Shimano 4-Arm - The Easiest Way to Convert to 1x

Thinking about converting your Shimano 2x road crankset to a simple and efficient 1x system? This is the chainring you need. We've engineered this chainring to solve the common problems of 1x conversions, like poor chainline and dropped chains. It provides a straightforward, high-performance solution for a clean and reliable single-chainring setup.

• ✔Optimized Chainline: This chainring is designed with a specific offset to create the ideal chainline when mounted on a Shimano 2x crank arm, ensuring your drivetrain runs smoothly and quietly.
• ✔Zero Dropped Chains: Features our proven Narrow-Wide tooth profile that securely locks the chain in place. This is the key technology to prevent chain drops in a 1x system without needing a chain guide.
• ✔Perfect Shimano 4-Arm Fit: Designed for a seamless fit on Shimano's modern 4-arm road cranksets, making the conversion simple and secure.
• ✔Lightweight & Durable: Fully CNC-machined from a single block of AL7075-T6 alloy to provide the perfect balance of low weight, stiffness, and long-term durability.

Specifications

How to choose the most suitable chainring

Q: Can I just remove one chainring from my existing 2x crankset to make it 1x?

A: It's not recommended. A standard 2x crankset is not designed for a 1x setup, which can lead to two major problems: an incorrect chainline causing noise and wear, and frequent chain drops because the teeth are not designed to hold the chain securely without a front derailleur. This chainring is specifically engineered to solve both of those issues.

Q: What is a "Narrow-Wide" chainring and why is it important for 1x?

A: A "Narrow-Wide" chainring has a special tooth profile that alternates between narrow and wide to perfectly match a chain's inner and outer links. This snug fit is the key to preventing chain drops on a 1x system, providing the security you need to ride with confidence.

Q: Do I need to shorten my chain after converting to 1x?

A: Yes, most likely. When you remove the front derailleur and larger outer chainring, you will have excess chain length. For optimal performance and to reduce chain slap, it's highly recommended to shorten your chain to the correct length for your new 1x setup. We suggest consulting a professional mechanic for this adjustment.