Best Mountain Bike Rear Derailleurs (2024 Update)
If you’re looking for the perfect rear derailleur for your mountain bike, there are several factors to consider before making your final decision. A rear derailleur is an essential component of your bike's drivetrain. It moves the chain between the sprockets and is responsible for accurate shifting and smooth riding. The best mountain bike rear derailleurs offer a crisp and reliable gear change, less chance of chain drop, and the ability to withstand tough terrain.
When choosing the best mountain bike rear derailleur, consider the derailleur cage length, cage material, pulley design, and compatibility with your drivetrain. Cage length affects the capacity for the derailleur to handle a wide range of gears. A long cage can handle more gears, while a short cage is lighter and can shift faster. The material of the cage can influence its durability and weight. The pulley design can impact the smoothness of gear changes. And, of course, it's essential to ensure that the rear derailleur you choose is compatible with your drivetrain.
If you're still undecided, ask yourself some questions. What type of riding will you be doing? What terrain will you be riding on? What is your budget? Answering these questions can provide clarity on what features you should prioritize and what rear derailleur will best meet your needs. Choosing the best mountain bike rear derailleur can improve your riding experience, performance, and ultimately, your enjoyment of the sport.
10 Best Mountain Bike Rear Derailleurs
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This product is ideal for replacing a damaged or broken rear derailleur hanger on a Cannondale mountain bike.
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2
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The product is ideal for mountain bikes with 6 or 7 speeds and can be used for BMX or track riding with adapter.
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3
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It is ideal for repairing or replacing the rear derailleur hanger on a mountain bike.
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4
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It is ideal for supporting and protecting the derailleur on various types of bicycles such as mountain bikes, road racing bikes, and hybrid bikes.
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5
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Ideal for smoother and more efficient shifting for mountain bikes with direct mount compatibility.
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6
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This product is ideal for replacing the rear derailleur guide roller on both mountain and road bikes.
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7
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The product is ideal for providing smooth and accurate shifting performance on a variety of terrains and under different riding conditions.
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8
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It is ideal for extending the distance between the derailleur and cassette, improving gear shifting on bicycles.
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9
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This product is ideal for road and mountain bikes with 6-7 speed rear derailleur systems.
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10
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Ideal for mountain bicycles with 7/8 speed gearing, ensuring precise shifting and a reliable performance on trails.
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1. Cannondale Mountain Rear Derailleur Hanger Kit Kp284
Introducing the compatible solid derailleur hanger for various Cannondale models! This high-quality hanger is specifically designed to keep your derailleur stable during the toughest riding conditions, ensuring a smooth and safe ride.
This derailleur hanger is compatible with a range of Cannondale models including Trail 15-19, Adventure 17-19, Bad Boy 16-19, Catalyst 16-19, Contro 15-16, Cujo 17-19, Foray 17-19, Kids Cujo, Kids Trail, Kids Quick, Kids Street, Kinneto, Law Enforcement, Mavaro Neo, Quick 16-19, Quick CX 15-19, Quick Neo 18, Scarlet, Tango16-19, Tesoro Neo, and Treadwell. This ensures that you can easily install it on your bike and enjoy a stable and secure ride.
The package comes with a hanger and mounting hardware, including two screws that are easy to install. The screws are designed to provide a secure attachment, ensuring that the hanger stays in place even during the most rigorous rides.
2. Tourney Mountain Bike Rear Derailleur – 7-Speed.
The product being reviewed is a high-performance bicycle derailleur that is designed to provide unparalleled shifting precision and reliability. This derailleur features a long cage design that can accommodate up to a 34T cassette, making it ideal for riders who demand maximum versatility from their bicycles. The long cage design ensures that the derailleur can handle a wide range of gears, allowing riders to tackle any terrain with ease.
The derailleur also features SIS indexing, a proprietary technology that ensures smooth and reliable performance. This innovative technology ensures that each shift is precise and effortless, allowing riders to focus on their ride and not their equipment. The SIS indexing also helps to prevent the chain from slipping or jumping, which can cause damage to the bike and potentially injure the rider.
In addition to its advanced technology, this derailleur is also 6/7-speed compatible. This means that it can be used with a wide range of different bicycles, making it a versatile and reliable choice for riders of all skill levels. Whether you're a seasoned pro or a weekend warrior, this derailleur is sure to provide the performance and reliability that you need to ride with confidence.
3. Mountain Bike Rear Derailleur Adapter – #003
Protect your bike from damage with this high-quality bike derailleur hanger. Made of durable aluminum alloy, it fits most types of bikes and can easily be replaced to reduce maintenance costs. The hanger comes with a set of matching screws for easy installation and removal.
The texture of the hanger is smooth and practical, making it a reliable addition to any bike. Whether you're a professional cyclist or a casual rider, this derailleur hanger is an essential component to keep your bike in top condition.
Installation and removal are made easy with the included screws, allowing for hassle-free maintenance. The hanger can be replaced when necessary, saving you money on frame repairs.
Customer satisfaction is a top priority, which is why this product comes with a 180-day unconditional return and refund policy. If for any reason you are not satisfied with your purchase, simply reach out to the manufacturer for a resolution.
Invest in the protection of your bike with this high-quality derailleur hanger. Its premium materials and easy installation make it a reliable and cost-effective solution for any cyclist.
4. Universal Bike Derailleur Hangers – Perfectly Versatile!
The Bicycle Derailleur Hanger Replacement set includes two hangers designed to protect the transmission after dialing role. These hangers are universal in type, making them a convenient emergency replacement option for most bikes.
It is important to note that since these accessories do not have a specific matching model, customers should compare the parts they need to replace with the hangers to ensure their size and shape match.
If any quality issues arise, customers can reach out to the seller for assistance. For delivery issues, customers are advised to contact Amazon's service team first.
5. Shimano Altus Mountain Bike Rear Derailleur – Direct Mount – Rdm310
Looking for a reliable and sturdy rear derailleur for your bike? Look no further than this Shimano rear derailleur! With a chain wrap capacity of 43 teeth and a top-normal (traditional) derailleur action, it's designed to handle even the toughest rides. The derailleur comes in a sleek black color and is compatible with Shimano/SRAM 8 drivetrain spacing. It can handle a largest cog of up to 34 teeth, making it a great choice for those who love to tackle steep hills and challenging terrain.
This Shimano rear derailleur is designed to work seamlessly with Shimano shifters and is suitable for 8-speed drivetrains. With a weight of just 326g, it's lightweight and won't weigh you down during long rides. The derailleur is made from high-quality materials, ensuring it's both durable and long-lasting.
Whether you're an avid cyclist or just starting out, this Shimano rear derailleur is an excellent choice for anyone looking for a reliable and efficient drivetrain. Its parameters and specifications make it a versatile option that can handle any terrain, from flat roads to steep hills. With its sleek black color and top-quality construction, it's sure to be a favorite among cyclists of all levels. Don't settle for a lesser product – choose Shimano for the best in bike components!
6. Ceramic Jockey Wheels For Smooth Riding.
ALOMEJOR's Rear Derailleur Pulley is a lightweight and durable bike accessory made of CNC aluminum alloy. It is compatible with most rear derailleurs in the market, supporting 7/8/9/10 speed. Its anti-rust and corrosion-resistant anodized finish ensures great performance, while its smooth ball bearings provide a seamless ride.
This rear derailleur pulley is a necessary accessory for any cyclist looking to enhance their cycling experience. Its superior quality guarantees a better and smoother ride for the user.
ALOMEJOR is committed to providing its customers with high-standard products. If you are not satisfied with the product you received, you can reach out to their customer service team via email at any time. They will reply promptly and assist you in resolving any issue you may encounter.
7. Shimano Deore Xt Rd-M786 Sgs Shadow Plus Rear Derailleur
Introducing the ultimate solution for all your mountain biking needs – the 10-Speed Shadow Plus MTB rear derailleur. This innovative piece of technology is designed to offer a smooth and seamless riding experience that's sure to take your adventures to the next level.
One of the key features of this rear derailleur is the stabilizer switch that's incorporated into its design. This unique feature helps to reduce chain slap, ensuring a quieter and more stable ride. This is especially helpful when you're riding over rough or uneven terrain, as it helps to minimize any unwanted noise or movement that could throw you off balance.
Another great feature of the 10-Speed Shadow Plus MTB rear derailleur is its low profile Shadow design. This sleek and stylish design not only looks great, but it also helps to reduce the risk of damage to the derailleur in the event of a crash or impact. This is because the derailleur is tucked away closer to the frame of the bike, making it less likely to get snagged or caught on any obstacles you may encounter on the trail.
Of course, none of these features would matter if the derailleur didn't work as well as it should. Fortunately, the 10-Speed Shadow Plus MTB rear derailleur is up to the task. Its 10-speed design offers smooth and precise shifting, even under the most challenging conditions. Plus, with its Shadow Plus technology, you can count on the derailleur to stay in place when you need it to, minimizing any unwanted chain movement or derailment.
8. Pastlla Bike Rear Derailleur Hanger Derailleur Hanger Extender
Introducing the Rear Derailleur Hanger, a must-have accessory for avid cyclists. This package includes one sturdy and durable hanger made of high-quality aluminium alloy in sleek black color. The hanger measures 45×22×12mm/1.77×0.87×0.47in, making it perfect for a wide range of bikes.
Installing the Rear Derailleur Hanger is a breeze, thanks to its easy-to-install design. Simply replace the old hanger with this high-quality one and enjoy a smoother ride with improved tension and speed.
Built to last, the Rear Derailleur Hanger is a reliable accessory that can withstand even the toughest cycling conditions. Its sturdy construction ensures that it can endure the wear and tear of daily use without breaking or bending.
Whether you're a professional cyclist or a casual rider, this hanger is an essential component to have in your bicycle toolkit. With its impressive specifications and reliable performance, it's no wonder why the Rear Derailleur Hanger is a preferred choice for cycling enthusiasts.
Upgrade your cycling experience with the Rear Derailleur Hanger and enjoy a smoother, more efficient ride every time. Don't settle for less when it comes to your bike's performance – invest in this must-have accessory today!
9. Shimano Mtb Direct Mount Rear Derailleur
The RD-TY300 rear derailleur is a reliable and efficient component designed for 6 and 7-speed SIS INDEX variable speed transmission systems. Its compatibility with high-speed gears of 11T/14T makes it a versatile option for various types of bikes, including MTBs, mountain bikes, road bikes, folding bicycles, and more.
Crafted from durable aluminum alloy, this rear derailleur offers exceptional stability and is built to withstand the rigors of frequent use. Its smooth shifting performance ensures a safe and stable riding experience, even on rough terrains.
One of the best advantages of the RD-TY300 is its easy-to-use and maintain mechanism, which makes it an ideal choice for both novice and experienced riders. With its wide application, this rear derailleur brings an added level of convenience and practicality to your cycling experience.
Should you have any questions or concerns, the manufacturer provides quality service to ensure your satisfaction. Choose the RD-TY300 rear derailleur for a dependable and seamless cycling experience.
10. Enbo Shimano Bike Rear Derailleur Rd-Tx800 7/8 Speed Direct Mount For Mountain Bicycle (Black)
The RD-TX800 Tourney Rear Derailleur is a high-quality product that is designed to provide a superior performance for your bike. This rear derailleur is compatible with 7/8 speed drive systems and is suitable for use with various types of bikes, including mountain bikes, road bikes, folding bicycles, and more.
Constructed with a high-hardness aluminum alloy body, the RD-TX800 Tourney Rear Derailleur is forged to withstand extreme conditions. The hollow weight-reduction design ensures that the speed change is more stable, providing you with a smooth ride.
The precise adjustment feature of this bike rear derailleur is attributed to its high-hardness aluminum alloy body, which allows for more accurate adjustments. The derailleur can be adjusted slightly in multiple places to ensure accurate speed change performance, making it an ideal choice for those who value precision.
Installation of the RD-TX800 Tourney Rear Derailleur is a breeze, thanks to its easy-to-install and remove design. The derailleur is a direct mount and not a hub bolt mount, so it is important to check the mount type of the original part before ordering.
Should you have any questions about this product, the manufacturer provides quality service and is readily available to assist you. Overall, the RD-TX800 Tourney Rear Derailleur is an excellent choice for those seeking a high-quality and reliable bike rear derailleur.
Best Mountain Bike Rear Derailleurs FAQs
Are there any specific brands that are known for making the best mountain bike rear derailleurs?
Yes, there are several brands that are known for making the best mountain bike rear derailleurs. Some of the top brands include Shimano, SRAM, and Campagnolo. Shimano is perhaps the most well-known and popular brand, with a wide range of rear derailleurs for different types of mountain bikes and riding styles. SRAM is another reputable brand that is known for its high-quality and innovative rear derailleurs, which are designed to provide smooth and precise shifting even in challenging terrain. Campagnolo is a more niche brand that is popular among serious mountain bikers and racers, thanks to its lightweight and durable rear derailleurs that are designed for high-performance riding. Ultimately, the best brand for you will depend on your specific needs and preferences, as well as your budget. It's important to do your research and read reviews from other riders to find the best mountain bike rear derailleur for your bike.
Can I upgrade my mountain bike's rear derailleur to improve performance?
Yes, upgrading your mountain bike's rear derailleur can definitely improve its performance. The rear derailleur is responsible for shifting the chain onto different gears at the back of the bike, and a higher-end derailleur can provide smoother and more precise shifting. This can make a big difference when you're tackling steep climbs or technical terrain, as it allows you to quickly and easily find the right gear for the job.
When upgrading your rear derailleur, there are a few things to consider. First, make sure that the new derailleur is compatible with your bike's drivetrain. You'll also want to think about the type of riding you do and choose a derailleur that's appropriate for your needs. For example, if you do a lot of aggressive downhill riding, you may want to opt for a derailleur with a clutch mechanism that helps to reduce chain slap and improve chain retention.
Overall, upgrading your mountain bike's rear derailleur can be a great way to improve its performance and make your rides more enjoyable. Just be sure to do your research and choose a derailleur that's compatible with your bike and suits your riding style.
Do I need to match my mountain bike rear derailleur with a specific cassette or chain?
Yes, it's important to match your rear derailleur with a compatible cassette and chain. The derailleur is responsible for shifting the chain between different gears on the cassette, and the size of the cassette determines the range of gears available. Different derailleurs are designed to work with different ranges of gears, so it's essential to select a cassette and chain that are compatible with your derailleur. Using an incompatible cassette or chain could result in poor shifting performance, or even damage to your drivetrain components.
When selecting a cassette and chain, make sure to check the manufacturer's specifications for compatibility with your derailleur. The number of gears on your cassette (e.g. 10-speed, 11-speed, etc.) should match the number of speeds your derailleur is designed for. In addition, the tooth count on your cassette should fall within the range specified by your derailleur manufacturer. Matching these components correctly will ensure smooth shifting and optimal performance from your mountain bike.
How do I choose the right mountain bike rear derailleur for my needs?
Choosing the right mountain bike rear derailleur is crucial for having a smooth and efficient ride. Here are some factors to consider when selecting a rear derailleur:
1. Compatibility: Make sure the rear derailleur is compatible with your bike's drivetrain components, including the cassette, chain, and shifter.
2. Capacity: Choose a rear derailleur with the appropriate capacity for your bike's gearing. This refers to the difference in teeth between the smallest and largest gears on the cassette.
3. Cage length: The length of the derailleur's cage determines how much chain slack it can handle. Short cages are better for smaller cassettes, while long cages are necessary for larger ones.
4. Brand and model: Choose a reputable brand and model with good reviews and a proven track record of reliability.
5. Riding style: Consider your riding style and the terrain you will be riding on. If you ride aggressively or on rough terrain, you may want a more durable and stable derailleur.
By considering these factors, you can choose the right mountain bike rear derailleur that will meet your needs and enhance your riding experience.
How important is weight when choosing a mountain bike rear derailleur?
The weight of a mountain bike rear derailleur is a crucial factor to consider when choosing one. A lighter derailleur can significantly improve the overall performance of the bike, making it easier to pedal and maneuver on the trails. However, it is important to note that the weight of the derailleur should not be the only consideration when choosing one. Other factors such as durability, compatibility with the bike's drivetrain, and the type of riding you will be doing should also be taken into account.
For example, if you are a downhill rider who needs a durable derailleur that can handle the rigors of aggressive riding, a heavier option may be more suitable. On the other hand, if you are a cross-country rider looking to shave off weight and improve efficiency, a lighter derailleur may be a better choice. Ultimately, the weight of the derailleur should be balanced with other important factors to ensure optimal performance and durability.
What are the advantages of using a clutch rear derailleur on a mountain bike?
The primary advantage of using a clutch rear derailleur on a mountain bike is to reduce chain slap and improve chain retention. The clutch mechanism applies tension to the derailleur cage, preventing excessive movement and keeping the chain in place. This is particularly beneficial when riding over rough terrain, as it helps to reduce the noise of the chain bouncing around and the risk of it falling off the chainring or cassette.
Another advantage of a clutch derailleur is that it can improve shifting accuracy, as there is less chain movement during gear changes. This is especially useful when riding on technical terrain where quick and precise gear changes can make a big difference.
In addition, a clutch derailleur can also extend the lifespan of the drivetrain components by reducing wear and tear on the chain, cassette, and chainring teeth.
Overall, a clutch rear derailleur is a valuable upgrade for any mountain biker who wants to improve chain stability, reduce noise, and increase shifting accuracy while riding over rough terrain.
What are the top-rated mountain bike rear derailleurs on the market?
There are several top-rated mountain bike rear derailleurs on the market, each with their own unique features and benefits. One of the most popular options is the Shimano XT RD-M8000, which offers smooth shifting and durability. Another great choice is the SRAM GX Eagle, which is known for its crisp and precise shifting. The Shimano Deore XT RD-M781 is also a reliable option, with a fast and accurate shifting system. For those on a budget, the Shimano Deore RD-M591 offers a solid performance at a more affordable price point. Ultimately, the best rear derailleur for your mountain bike will depend on your specific needs and preferences. Consider factors such as your riding style, terrain, and budget when making your decision and consult with a professional if necessary.
What features should I look for in a high-quality mountain bike rear derailleur?
When choosing a high-quality mountain bike rear derailleur, there are several features that you should consider to ensure that you get the best performance possible. First, it's important to consider the durability of the derailleur. Look for models that are made from high-quality materials, such as aluminum, and that have sealed bearings to protect against dirt and moisture.
Next, you should consider the number of gears that the derailleur can accommodate. This will depend on the number of cogs on your cassette, but most modern mountain bikes have at least 10 gears, so look for a derailleur that can handle that many or more.
Another important factor is the size of the derailleur pulleys. Larger pulleys can help to reduce friction and improve shifting performance, so look for models with pulleys that are at least 11 teeth in size.
Finally, consider the adjustability of the derailleur. Look for models that have easy-to-use adjustment screws for setting the proper cable tension and limit stops for preventing the chain from falling off the cassette. Overall, by considering these factors, you can choose a high-quality mountain bike rear derailleur that will provide reliable performance on even the toughest trails.
What is the difference between a short cage and long cage rear derailleur, and which one should I choose?
A rear derailleur is an essential part of a bike's gear system, and it's important to choose the right one for your specific needs. The main difference between a short cage and long cage rear derailleur is the length of the cage, which is the part of the derailleur that holds the jockey wheels and guides the chain.
A short cage derailleur has a shorter cage, which means it can accommodate smaller cassettes and is ideal for road bikes or cyclocross bikes. A long cage derailleur has a longer cage, and it is designed to work with larger cassettes, making it ideal for mountain bikes or touring bikes.
When choosing between a short cage and long cage rear derailleur, you should consider the type of riding you will be doing and the terrain you will be covering. If you are planning on riding on flat roads or smooth surfaces, a short cage derailleur should be sufficient. However, if you plan on tackling more challenging and hilly terrain, a long cage derailleur will provide the necessary gear range to make the climbs easier.
Ultimately, the choice between a short cage and long cage derailleur comes down to your specific needs and preferences. It's always a good idea to consult with a bike mechanic or expert to ensure you are selecting the right component for your bike.
What maintenance and care should I perform on my mountain bike rear derailleur to keep it functioning properly?
Maintaining the rear derailleur on your mountain bike is crucial to ensure that it functions properly. Here are some tips to keep it functioning smoothly:
1. Regular cleaning: The derailleur should be regularly cleaned with a cloth and degreaser, especially after every muddy ride.
2. Lubrication: Use a bike-specific lubricant to lubricate the pivot points and the jockey wheels of the derailleur.
3. Checking alignment: Ensure that the derailleur hanger is straight and aligned correctly.
4. Cable tension and adjustment: Check the cable tension and adjust it as needed. Too much or too little tension can cause shifting issues.
5. Limit screw adjustment: Make sure that the limit screws are set correctly to prevent the chain from shifting off the cassette.
6. Check for damage: Inspect the derailleur for any damage, such as a bent cage or jockey wheels, and replace as necessary.
By following these tips, you can ensure that your mountain bike rear derailleur functions smoothly and lasts for a long time. If you are unsure about any of these maintenance tasks, it is always best to seek the help of a professional bike mechanic.
