10 Best 7 Speed Derailleur 2025 in the United States

The Inkesky RD-TZ31-GS is a 6/7 speed rear derailleur designed specifically for mountain bikes, and it features a direct mount setup. For those looking for a solid and affordable option, this derailleur is a strong contender. Made from aluminum, it is both durable and lightweight, with the item weighing in at 203 grams. This material choice helps ensure longevity while keeping the bike's weight manageable—a crucial aspect for mountain bikers who need to navigate challenging terrains.

The medium cage length of the RD-TZ31-GS makes it suitable for a wide range of gear ratios, which is great for those who often switch between different speeds and terrains. However, one key point to note is that this derailleur is specifically a direct mount type. This means it won’t be compatible with bikes that require a hanger mount, so potential buyers need to ensure their bike's compatibility before purchasing.

To sum up, the Inkesky RD-TZ31-GS 6/7 Speed Rear Derailleur is a reliable, durable option for mountain bike enthusiasts, but ensuring compatibility with your bike and considering your performance needs is essential before making a purchase.

The Huazu Rear Derailleur for RD-TZ31-A is designed for 6 and 7-speed mountain bicycles, making it a versatile choice for various bike types, including mountain, road, and folding bicycles. One of its main strengths is its compatibility with GS SIS Index Shifting drivetrains, ensuring smooth and precise gear changes. It features a durable build, combining aluminum alloy and plastic, which contributes to both its stability and longevity.

At 0.28 kilograms, it is relatively lightweight, which can be advantageous for maintaining bike efficiency without adding unnecessary weight. Additionally, its direct mount design requires checking compatibility with your bike frame's hook, which might be a minor inconvenience for some users but ensures a secure fit if compatible. It is worth noting that the derailleur has a total capacity of 34T, accommodating a largest sprocket of 28T and a smallest sprocket of 14T, with a front chain wheel tooth difference of 20T, making it suitable for varied terrains.

On the downside, the requirement to ensure the correct mount type can be an extra step for some users, and the material blend, while durable, might not match the robustness of higher-end all-metal derailleurs. This product is ideal for casual bikers or those looking for a reliable and cost-effective derailleur for their 6 or 7-speed bikes.