Best Rear Bike Derailleurs for Folding Bikes of 2025

The MEGHNA Shimano Tourney RD-TY300 6/7-Speed Rear Derailleur is a long cage tourney derailleur that is compatible with 11T/14T high speed gear and 6 and 7-speed SIS INDEX variable speed transmission systems. It features a B tension adjustment screw, so that the distance between the upper guide wheel and the tooth tip of the largest flywheel can not be less than 6mm. It is easy and fast to install and customers have reported smooth shifting and great replacement.

The YunQin Rear Derailleur Protectors are a must-have accessory for your bike. Designed to protect your bike's front derailleur from knocks and damage in the event of a fall, these rear derailleur protectors are easy to install and made of high-quality rust-proof iron. The unique arch angle design ensures that the protection bar does not easily deform under strong impact force. With their universal fit, these derailleur protectors are suitable for most mountain bikes, road bikes, and folding bikes. The set includes two pieces of protection bars, providing comprehensive coverage for your bike. Invest in the YunQin Rear Derailleur Protectors and ride with peace of mind knowing that your bike is well-protected.

The Relwears RD-TY500 Derailleur offers a superior shifting experience, thanks to its SIS INDEX shifting system. This feature allows you to enjoy seamless gear changes, making your rides smoother and more enjoyable. Made from durable aluminum, this derailleur is designed for long-lasting use, so you won't have to worry about frequent replacements. Additionally, its straightforward installation process means you can set it up quickly, saving you time and hassle. Whether you're riding on mountain trails or smooth roads, its versatile design ensures it meets your cycling needs effectively.

The Shimano Tourney RD-TY21B bike rear derailleur is made of high-quality steel materials and is compatible with 6 and 7-speed SIS Index Shifting drivetrains. It provides accurate gears that offer light and stable shift performance, making your ride easy and comfortable. This derailleur is easy to install and disassemble, suitable for MTB mountain bikes, road bikes, variable speed bicycles, folding, and city bikes.

The Relwears RD-TY21B Derailleur is designed for compatibility with 6 and 7-speed bikes, making it a versatile choice for various cycling needs. Its durable aluminum alloy construction ensures long-lasting performance and reliable shifting, enhancing your riding experience. Whether you ride a mountain bike, commuter bike, or cruiser, this derailleur performs exceptionally well, providing smooth gear transitions. Additionally, it features a hanger mount design, which allows for easy installation, ensuring you can quickly get back on the road. With this derailleur, you can enjoy a safer and more stable ride.

The THALOUS Tourney RD-TZ31-A Rear Derailleur is a high-quality and durable bicycle transmission suitable for 6-speed and 7-speed SIS index variable speed drives. Made of sturdy steel, this rear derailleur is resistant to deformation and damage, ensuring long-lasting performance. The smooth and silent guide wheel allows for effortless shifting, providing a comfortable riding experience. With its hook mounted design, it is important to check if your bicycle is compatible before purchasing. This versatile rear derailleur is suitable for a wide range of bikes, including mountain bikes, road bikes, and folding bikes, making it an ideal choice for various cycling needs.

The THALOUS RD-TY300 Derailleur is designed for 6, 7, and 8-speed bikes, making it versatile for various riding styles. Its direct installation feature allows you to easily mount it on your bike, provided it’s compatible. Made from high-quality aluminum alloy, this derailleur is not only strong but also resistant to deformation and damage, ensuring longevity. Whether you ride a mountain bike, road bike, or city bike, this derailleur enhances your cycling experience, providing smooth gear shifts and reliable performance.

THALOUS Bicycle Rear Derailleur is a hook-mounted model suitable for 6-speed and 7-speed SIS index variable speed drives. It is made of high-quality steel and suitable for various types of bikes such as mountain bikes, road bikes, and city bikes. The professional customer service is available to answer any questions you may have.

The MEGHNA Rear Derailleur is a 9-speed model designed for various bikes, including mountain, hybrid, and e-bikes. Its direct mount feature ensures a stable connection, giving you reliable performance on different terrains. With a capacity for 41T and a maximum front difference of 16T, you can enjoy smooth shifting even during challenging rides. The low-profile design protects the derailleur from obstacles, allowing you to navigate trails and city streets effortlessly. This derailleur is perfect for those who want dependable shifting, making your cycling experience more enjoyable.

The Huazu Bike Parts Gear Shifter for Shimano RD-TZ31-A is a durable and reliable rear derailleur that is compatible with GS 6/7 speed SIS Index Shifting drivetrains. Made with a combination of aluminum alloy and plastic alloy materials, this derailleur provides excellent shifting performance and ensures safe and stable riding. With a total capacity of 34T, largest sprocket of 28T, smallest sprocket of 14T, and front chain wheel tooth difference of 20T, this derailleur is suitable for mountain bikes, road bikes, folding bicycles, and more. Please note that this derailleur is direct mount, not hub bolt mount, so be sure to check the mount type of your original part before ordering.