The Shimano CN-HG93 [paid link] chain remains a trusted option among cyclists riding 9-speed drivetrains. It’s well-known for its consistent performance, longevity, and Shimano’s signature Hyperglide technology. Yet, as drivetrain standards continue to evolve, many riders wonder: can you upgrade your CN-HG93 [paid link] chain? This guide provides a clear, expert-level [paid link] breakdown on compatibility, upgrade pathways, and best practices when considering a move from the CN-HG93 [paid link] to other options—or refreshing it within your current setup.
Understanding the CN-HG93 Chain
Before deciding whether an upgrade is necessary or even possible, it’s crucial to understand the specifications of the CN-HG93:
- Speed Compatibility: 9-speed systems
- Chain Width: 6.6 mm
- Technology: Hyperglide (HG) for smoother shifting under load
- Weight: Approximately 304 grams (114 links)
The CN-HG93 is engineered for Shimano’s 9-speed road and mountain bike drivetrains. Its chrome-plated link pins enhance durability and resist rust, a hallmark that has made it a favorite for riders needing a reliable chain over many miles.
Can You Upgrade the CN-HG93 Chain?
The concept of “upgrading” a chain depends heavily on the context of your drivetrain. Chains must match the spacing and width requirements of the cassette and chainrings they interact with. Here are the considerations:
Upgrading Within 9-Speed Systems
If you’re remaining within a 9-speed drivetrain, you have limited “upgrades” in the traditional sense. Shimano’s CN-HG93 is already one of the higher-end options for 9-speed setups. Comparable chains include:
- Shimano CN-HG73: A slightly lower-tier 9-speed chain.
- KMC X9SL: Lighter, with hollow pins and plates for weight savings.
However, swapping the CN-HG93 for another 9-speed chain rarely results in noticeable performance gains unless you’re targeting specific features like reduced weight or improved corrosion resistance. Therefore, within 9-speed systems, a “new” CN-HG93 is typically as good as it gets.
Moving to 10-Speed or Higher
If you’re upgrading to a 10-speed, 11-speed, or even 12-speed drivetrain, replacing the CN-HG93 is not just advisable—it’s mandatory. 10-speed chains are narrower (around 5.88 mm wide) and designed for the tighter cog spacing of higher-speed cassettes.
- 10-Speed Chains: Shimano CN-6701 [paid link], for example, or KMC X10.
- 11-Speed Chains: Shimano CN-HG701 [paid link] or SRAM PC-1170 [paid link].
Each upgrade requires not only a new chain but also compatible shifters, cassette, and derailleur. Without these changes, a 10-speed or 11-speed chain won’t perform correctly with a 9-speed drivetrain.
Best Practice: System Compatibility
Always ensure the chain matches the exact number of speeds your drivetrain is designed for. Mismatching chain widths can lead to poor shifting, chain drop, and accelerated drivetrain wear. A CN-HG93 should only be replaced with another 9-speed chain unless a full drivetrain upgrade is performed.
Best Practices When Replacing or Upgrading the CN-HG93
When changing out your CN-HG93—whether for maintenance or performance goals—follow these expert best practices:
Match Chain Length Precisely
Always size your new chain correctly. The CN-HG93 chain should be measured and cut to match your bike’s specific needs. Incorrect chain length leads to poor shifting and excessive drivetrain wear.
Use a Proper Connecting Method
Shimano recommends using a connecting pin for the CN-HG93 rather than a master link. The pin ensures a secure and durable connection when properly installed with a chain tool.
Maintain Chain Cleanliness
Even a high-quality chain like the CN-HG93 will degrade prematurely without regular cleaning and lubrication. Stick to a cleaning schedule that aligns with your riding conditions—more frequent for muddy or wet rides, less frequent for dry, road conditions.
Inspect the Drivetrain
If you’re replacing the chain due to wear, check your cassette and chainrings too. A worn cassette can prematurely wear a new chain, leading to inefficient shifting and faster degradation.
Break-in Period
Give your new chain a break-in period of 50–100 miles. During this time, minor noise and shifting imperfections are normal as the chain and cassette bed into each other.
Alternative Chain Options for 9-Speed Setups
If you want to consider alternatives to the CN-HG93 without upgrading your entire drivetrain:
- KMC X9SL: Lightweight, with excellent corrosion resistance.
- SRAM PC-991: Another premium 9-speed chain known for strength and smooth shifting.
- Wippermann Connex 9sX: Stainless steel construction, long-lasting but heavier.
These alternatives offer different benefits like lighter weight or increased resistance to harsh weather, but in pure shifting performance, the CN-HG93 holds its own admirably.
Conclusion
The Shimano CN-HG93 remains an excellent choice for 9-speed drivetrain users who value reliability, smooth shifting, and durability. While upgrading within the 9-speed category is possible, the CN-HG93 already sits near the top of what Shimano offers for this speed group. Transitioning to a higher-speed drivetrain requires a full system overhaul and a different chain altogether.
When replacing or considering an upgrade, focus on matching the chain to your drivetrain’s speed, following proper installation techniques, and adhering to a disciplined maintenance schedule. The CN-HG93 continues to serve as a benchmark for what a dependable 9-speed chain should deliver.