Last Updated on September 2, 2025 by Jaxon Mike
Finding the right derailleur for your mountain bike is crucial for smooth and efficient shifting, especially when you’re on a budget. The market offers a variety of options that cater to different needs and preferences. In this comprehensive product review, we’ll dive into the details of some of the best budget mountain bike derailleurs available, helping you make an informed decision for your riding adventures.
5 Best Budget Mountain Bike Derailleur Reviews
Inkesky RD-TZ31-GS 6/7 Speed Rear Derailleur with Direct Mount, Medium Cage, for Mountain Bike
Overview
The Inkesky RD-TZ31-GS Rear Derailleur is a budget-friendly option that boasts a direct mount design, making it a great fit for mountain bikes. With its 6/7-speed compatibility and medium cage, it can handle a wide range of gear ratios, ensuring a smooth and reliable shifting experience on the trails.
Specs
- Direct mount design for secure installation
- Compatibility with 6/7-speed drivetrains
- Medium cage design for a wide gear range
- Durable aluminum alloy construction
- Smooth and precise shifting performance
Pros
- Excellent value for money
- Easy installation with the direct mount system
- Reliable and smooth shifting across all gears
- Rugged and durable construction for trail use
- Relatively lightweight design
Cons
- Compatibility may be limited to certain bike frames
- Some users report issues with long-term durability
- Adjustment process may be challenging for some users
Customer Review
The Inkesky RD-TZ31-GS Rear Derailleur has received overwhelmingly positive reviews from customers, with an average rating of 5 out of 5 stars. Users praise its smooth and reliable shifting performance, easy installation, and overall value for money. One customer, a parent who used the derailleur to repair their son’s mountain bike, described it as a “game-changer” that has made a significant difference in the bike’s performance on challenging trails.
6/7 Speed Bike Rear Derailleur Bicycle Rear Derailleur with Direct Mount for Mountain Bike Road Bikes
Overview
The 6/7 Speed Bike Rear Derailleur from Aikolesa is a versatile option that can be used on a variety of bike types, including mountain bikes, road bikes, and hybrids. With its direct mount design and compatibility with 6/7-speed drivetrains, it offers a reliable and durable solution for budget-conscious riders.
Specs
- Compatibility with 6/7-speed drivetrains
- Direct mount design for secure installation
- Wide gear range compatibility (14-34T cassette)
- High-quality aluminum alloy construction
- Silent and long-lasting performance
Pros
- Versatile mounting options with direct mount design
- Handles a wide range of gear ratios for various terrain
- Durable and lightweight aluminum alloy build
- Smooth and quiet shifting performance
- Excellent value for the price
Cons
- Limited customer feedback and reviews available
- Potential compatibility issues with some bike frames
- Concerns about long-term durability may exist
Customer Review
Due to the limited customer reviews available for this specific product, it’s difficult to provide a comprehensive assessment of user experiences. However, the product’s features and specifications suggest that it could be a viable budget-friendly option for mountain bikers looking to upgrade their drivetrain components.
Rear Derailleur RD-TZ31A 6/7 Speed Direct/Hanger Mount Derailleur for Mountain Tricycle Commuter Cruiser Bike
Overview
The Rear Derailleur RD-TZ31A from Aikolesa is a versatile option that can be used on a variety of bike types, including mountain bikes, tricycles, commuter bikes, and cruiser bikes. It features both direct mount and hanger mount compatibility, giving you the flexibility to choose the best fit for your bike.
Specs
- Compatibility with 6/7-speed drivetrains
- Durable aluminum alloy construction
- Precise adjustment for accurate shifting performance
- Nylon wear-resistant aluminum alloy guide wheel for smooth operation
- Wide range of bike compatibility (mountain, commuter, cruiser, etc.)
Pros
- Versatile mounting options (direct mount or hanger mount)
- Durable and stable construction for reliable performance
- Precise adjustment capabilities for fine-tuning shifting
- Suitable for a variety of bike types and riding conditions
- Relatively affordable price point
Cons
- Limited customer reviews and feedback available
- Potential compatibility issues with certain bike frames
- Durability concerns may exist based on the budget-friendly nature
Customer Review
Unfortunately, there are no customer reviews available for this specific product, making it difficult to assess real-world user experiences. However, the product’s features and specifications suggest that it could be a suitable option for budget-conscious riders looking for a versatile and durable rear derailleur for their mountain, commuter, or cruiser bikes.
RD-TY21B 6/7 Speed Derailleur – Direct/Hanger Mount for Mountain, Tricycle, Commuter, Cruiser Bikes
Overview
The RD-TY21B 6/7 Speed Derailleur from Aikolesa is another budget-friendly option that caters to a wide range of bike types, including mountain bikes, tricycles, commuter bikes, and cruiser bikes. Its direct mount or hanger mount compatibility allows for flexible installation options to suit your bike’s needs.
Specs
- Compatibility with 6/7-speed drivetrains
- Durable aluminum alloy construction
- Excellent shifting performance for safe and stable riding
- Versatile mounting options (direct mount or hanger mount)
- Suitable for a variety of bike types (MTB, commuter, cruiser, etc.)
Pros
- Flexible mounting options for easy installation
- Durable and reliable aluminum alloy build
- Smooth and stable shifting performance
- Suitable for a wide range of bike types and riding conditions
- Affordable price point
Cons
- Limited customer feedback and reviews available
- Potential compatibility issues with certain bike frames
- Concerns about long-term durability may exist
Customer Review
Similar to the previous product, there are no customer reviews available for the RD-TY21B Derailleur, making it difficult to assess real-world user experiences. However, the product’s features and specifications suggest that it could be a viable option for budget-conscious riders looking for a versatile and durable rear derailleur for their various bike types.
Buying Guide: Choosing the Best Budget Mountain Bike Derailleur
Compatibility
- Ensure the derailleur is compatible with your bike’s drivetrain (6/7-speed, 8/9/10-speed, etc.)
- Check the mounting type (direct mount, hanger mount, or both) to ensure it fits your bike frame
- Consider the maximum cassette size the derailleur can accommodate for your desired gear range
Construction and Durability
- Look for derailleurs made of high-quality materials like aluminum alloy for strength and longevity
- Evaluate the overall build quality and design to ensure it can withstand the rigors of mountain biking
- Pay attention to features like sealed pulleys and guide wheels for smooth and quiet operation
Ease of Installation and Adjustment
- Choose a derailleur with a straightforward installation process, especially if you’re not an experienced bike mechanic
- Look for derailleurs with precise adjustment mechanisms to ensure accurate and reliable shifting performance
- Consider the availability of detailed installation and adjustment instructions from the manufacturer
Performance and Shifting Quality
- Prioritize derailleurs that offer smooth, consistent, and responsive shifting across all gears
- Ensure the derailleur can handle the gear range and terrain you’ll be riding on your mountain bike
- Read customer reviews to get an idea of the real-world shifting performance and reliability
Value for Money
- Evaluate the overall features, quality, and performance of the derailleur in relation to its price point
- Consider the long-term durability and potential maintenance requirements to determine the true value
- Look for budget-friendly options that still offer a good balance of quality and functionality
FAQ
1. Do I need to replace my entire derailleur, or can I just replace the pulley wheels?
It’s generally recommended to replace the entire derailleur if it’s worn out or not functioning properly, as the pulleys are an integral part of the assembly. Replacing just the pulley wheels may provide a temporary fix, but it’s not a long-term solution as the rest of the derailleur components may also be worn or outdated.
2. How do I determine the correct size and compatibility of a replacement derailleur?
To ensure proper compatibility, you’ll need to check the specifications of your current derailleur, including the number of speeds, cage size (short, medium, or long), and mounting type (direct mount or hanger mount). Refer to your bike’s manufacturer’s recommendations or consult a local bike shop to ensure you get the right replacement derailleur for your mountain bike.
3. What are the benefits of a direct mount derailleur compared to a hanger mount?
Direct mount derailleurs offer a more secure and stable installation, as they attach directly to the bike’s frame rather than using a separate hanger. This can provide improved shifting performance and reduce the risk of the derailleur becoming misaligned or damaged during rides. However, direct mount compatibility may be limited to certain bike models, so it’s essential to check your bike’s specifications before purchasing.
4. How do I properly adjust and tune my derailleur for optimal performance?
Proper derailleur adjustment is crucial for smooth and reliable shifting. This typically involves adjusting the limit screws, barrel adjuster, and cable tension. It’s recommended to refer to the manufacturer’s instructions or consult a bike mechanic if you’re unsure about the adjustment process, as improper adjustment can lead to poor shifting or even damage to the derailleur and drivetrain components.
5. How often should I replace my mountain bike’s derailleur?
The lifespan of a derailleur can vary depending on factors such as riding conditions, maintenance, and the quality of the component. As a general rule, it’s a good idea to inspect your derailleur regularly and consider replacing it every 2-3 years or when it starts to show signs of significant wear, such as difficulty shifting, excessive play, or damage to the pulleys or cage.
Conclusion
Choosing the best budget mountain bike derailleur can be a challenging task, but this comprehensive review has highlighted some of the top options available on the market. From the reliable and smooth-shifting Inkesky RD-TZ31-GS to the versatile Aikolesa offerings, there are several budget-friendly derailleurs that can provide a significant upgrade to your mountain bike’s performance. By considering factors like compatibility, durability, ease of installation, and shifting quality, you can find the perfect derailleur to suit your riding needs and budget. With the right derailleur, you can enjoy a smoother, more efficient, and more reliable shifting experience on the trails.
I am Jaxon Mike, the owner of the Rcfact website. Jaxon Mike is the father of only one child. My son Smith and me we are both RC lovers. In this blog, I will share tips on all things RC including our activities, and also share with you reviews of RC toys that I have used.