If you're a mountain bike enthusiast, you know the importance of having a good derailleur. A derailleur is a mechanism that moves your bike's chain from one gear to another. It's a critical component that helps you shift gears smoothly and efficiently, especially when you're climbing steep hills or riding on rough terrain.
When looking for a derailleur for your mountain bike, there are a few key points you should consider. First, determine what type of derailleur you need. Mountain bikes typically use rear derailleurs, which are available in different speeds and styles. You need to choose one that's compatible with your bike's drivetrain.
Second, consider the durability and reliability of the derailleur. You want a derailleur that can withstand the harsh conditions of mountain biking and won't fail you in the middle of a ride.
Third, think about the weight of the derailleur. A lighter derailleur can improve your bike's performance and make it easier to ride uphill.
Fourth, consider the price of the derailleur. You don't want to overspend, but you also don't want to skimp on quality.
Finally, read reviews and do your research before making a purchase. Look for a derailleur that has good ratings and positive feedback from other mountain bikers.
By considering these key points, you can find the right derailleur for your mountain bike and enjoy a smoother, more efficient ride.
10 Best Derailleur For Mountain Bike
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1. Shengmilo-Mx02s Fat Tire E-Bike With 1000w Motor, Shimano Derailleur, And Removable 48v*17ah Battery. Dual Hydraulic Disc Brakes And Smart Lcd Display Included. Ideal For Snow Mountain Biking.
The Shengmilo-MX02S 26 * 4.0inch Fat tire Electric Bicycle is a high-performance bike designed for riders who seek comfort, safety, and adventure. With a sturdy Aluminum Alloy frame, this ebike can support a safe load of up to 180kg, making it ideal for riders of all sizes. The hydraulic disc brakes provide excellent stopping power, ensuring a safe and comfortable ride.
The 26 x 4.0 inch fat tires are designed to strengthen friction on the road surface, making driving more stable on all types of terrain, such as snow, road, beach, and MTB mountain. The high-strength Aluminum alloy suspension fork and 7 Speeds Shift System provide a comfortable and safe ride, even on bumpy roads.
Powered by a 48V*1000W brushless motor, this ebike delivers strong power that adds fun to your journey. The MAX-speed of the motor is about 40km/h, and the gradeability can reach 35° in common road conditions. The motor has a speed limit function of 20km/h to 35km/h optional. The 48V*17Ah Li battery can support about 1000 recharge cycles, and a full charge takes 6-8 hours.
The Shengmilo-MX02S ebike offers three working modes to choose from. The Pedal Assist Mode provides moderate power while you pedal the bike, allowing you to drive 60-90km before recharging. The Fully Electric Mode lets you twist the throttle to power the motor in any increment of power you desire, giving you a battery range of 40-50km. The Manual Mode lets you pedal the bike normally, just like any other bicycle.
The MX02S is equipped with 26 inches 4.0 fat tires that can adapt to snow, city roads, beaches, and mountain rides. The bike frame is made of Aluminum Alloy 6601, and the recommended driver height is 165cm-200cm, with a maximum weight support of 180kg.
The Shengmilo-MX02S 26 * 4.0inch Fat tire Electric Bicycle comes with a warranty of 12 months for the frame, 6 months for the motor and battery, and 12 months for other parts. The bike is 95% pre-assembled when you receive it, making it easy to set up and start riding.
2. Kcnc 12-Speed Mountain Bike Cassette With 9-52t Teeth For Sram Eagle Xx1/x01/gx Rear Derailleur – Lightweight At 327g, Black.
The KCNC Mountain Bicycle Cycling Cassette is a high-performance cassette designed for use with SRAM's Eagle XX1/X01/GX Rear Derailleur. With an ultra-light weight of only 327g, this cassette is perfect for riders who want to reduce the weight of their bike without compromising on performance.
One of the key features of this cassette is its adjustable top gear wheels, which help to keep riders up to speed with the cassette's high bandwidth. The cassette has a wide bandwidth of 578%, which is achieved through the use of cogs that range from 9 to 52 teeth. The cogs are optimized for perfect gearshift shifting, ensuring a smooth and efficient ride.
To achieve its low weight, the KCNC Eagle Cassette is CNC-milled from aluminum, which is then heavily padded to prevent smudging. The lower sprockets are made of wear-resistant and durable steel, ensuring that they can withstand heavy use without wearing out too quickly.
The cassette is also designed with compatibility in mind. It has three eccentric mount points, allowing it to be mounted with an offset of 3mm, 4mm, or 5mm. This makes it possible to compensate for manufacturer-specific differences in length on the derailleur hanger, ensuring that riders can smoothly switch into the smallest and largest pinion.
The cassette is compatible with XD and XDR freewheels, and can be used with SRAM XX1, X01, and GX Eagle 12-speed chains. It is an excellent choice for riders who want to upgrade their drivetrain without breaking the bank. With its lightweight design, wide bandwidth, and optimized cogs, the KCNC Eagle Cassette is a must-have for any serious mountain biker.
3. Shimano Rd-Tz31-A 6/7 Speed Rear Derailleur For Mtb, Tricycle, Commuter & Folding Bikes (Direct Mount)
The Shimano Bike Rear Derailleur RD-TZ31-A is a reliable and durable option for those in need of a direct mount rear derailleur for their bike. Compatible with 6/7 speed mountain bikes, commuter bikes, tricycles, and folding bikes, this model is versatile and can be used for a variety of biking activities.
It is important to note that this derailleur is a direct mount, not a hub bolt mount. Therefore, it is crucial to choose the right mounting option before purchasing.
Made of high-quality aluminum alloy material, this derailleur is built to last and ensures excellent shifting performance for a safe and stable ride. It is suitable for a range of bikes, including MTB, mountain bikes, road bikes, folding bicycles, commuter bikes, tricycles, and electric bikes.
The manufacturer provides excellent customer service and encourages customers to reach out with any questions or concerns. Overall, the Shimano Bike Rear Derailleur RD-TZ31-A is a great choice for those in need of a reliable and versatile direct mount rear derailleur for their bike.
4. Shengmilo-Mx02s 26" Fat Tire E-Bike W/ 1000w Motor, Shimano Derailleur & Removable 48v*17ah Lithium Battery. Dual Hydraulic Disc Brakes & Lcd Display. Ideal For Snowy Mountains. Color: Black.
The Shengmilo-MX02S 26 * 4.0inch Fat tire Electric Bicycle is a high-performance bike designed to provide riders with a comfortable and safe riding experience. It features a strong and lightweight aluminum alloy frame, which can support a maximum weight of 180kg. The bike is equipped with hydraulic disc brakes, which ensure the rider's safety during the ride.
The 26 x 4.0 inch fat tires are a standout feature of this bike, as they provide excellent traction and stability, making it suitable for all road conditions, including snow, road, beach, and MTB mountain. The high-strength aluminum alloy suspension fork and 7-speed shift system provide additional comfort, making the ride smoother and more enjoyable.
The Shengmilo-MX02S is powered by a 48V*1000W brushless motor, which provides strong power and makes the ride more fun. The motor has a speed limit function that can be set between 20km/h to 35km/h, and the gradeability can reach 35° in common road conditions. The bike's battery is a 48V*17Ah Li battery, which supports about 1000 recharge cycles, and it takes 6-8 hours to fully charge.
The bike comes with three working modes, including pedal assist mode, fully electric mode, and manual mode. In the pedal assist mode, the motor will assist the rider with a moderate amount of power as they pedal the bike. This mode can provide a range of 60-90km before requiring a recharge. In the fully electric mode, the rider can twist the throttle to power the motor of the bike, providing a range of 40-50km on a single charge. The manual mode allows the rider to pedal the bike normally, just like any other bicycle.
The Shengmilo-MX02S is suitable for riders with a height of 165cm to 200cm, and the maximum weight support is 180kg. The bike comes with a warranty, with the frame having a 12-month warranty, the motor and battery having a 6-month warranty, and other parts having a 12-month warranty. The bike is 95% pre-assembled when purchased, making it easy to assemble and ride. Overall, the Shengmilo-MX02S 26 * 4.0inch Fat tire Electric Bicycle is an excellent choice for riders who are looking for a comfortable, safe, and high-performance bike suitable for all road conditions.
5. Meghna Shimano Altus Rear Derailleur Rd-M310 7/8 Speed Mountain Bike Rear Derailleur Direct Mount
The MEGHNA Shimano Altus Rear Derailleur RD-M310 is a high-quality component for mountain bikes that provides smooth and efficient shifting. This rear derailleur is designed for 7/8 speed drivetrains and has a total capacity of 43T. The maximum rear sprocket size that is compatible with this derailleur is 34T.
The RD-M310 Altus Rear Derailleur is a top-normal (traditional) derailleur with a long cage length. Its advanced light-action design ensures that shifting is precise and responsive, allowing for a seamless ride. The Teflon-coated bushings reduce friction and wear, ensuring long-lasting performance.
The Shimano Altus 7/8 Speed Black RD-M310 Mountain Bike Rear Derailleur is a direct-mount derailleur that attaches directly to the bike frame. This design provides increased stability and reduces the likelihood of the derailleur getting damaged during riding.
The MEGHNA Shimano Altus Rear Derailleur RD-M310 is a high-quality component that is designed to withstand the rigors of mountain biking. Its direct-attach design and advanced light-action design make it a reliable and efficient choice for riders of all levels.
Whether you are a casual rider or a professional cyclist, the MEGHNA Shimano Altus Rear Derailleur RD-M310 is an excellent choice for your mountain bike. Its durable construction, smooth shifting, and direct-attach design make it a reliable and efficient component that will enhance your riding experience.
6. Kcnc Sxt Oversized Pulley Rear Derailleur Cage Ospw For Shimano 11 Speed Mountain E-Bikes (Gold)
The KCNC SXT Mountain E-Bike Bicycle Bike Oversized Pulley Rear Derailleur Cage OSPW for Shimano Deore XTR/XT/SLX M9000/M9050/M8000/M8050/M7000 11 Speed use(Gold) is an upgrade for your drivetrain that provides ultimate efficiency and superior performance. The Oversized Pully Wheel (OSPW) system reduces friction in the pulleys by 45% and provides optimised performance, resulting in overall power savings of 30%-60% or more in some cases over a stock setup.
The OSPW for Shimano features a narrow wide tooth profile to ensure durable chain retention. The system consists of top 14t and bottom 16t alloy pulley wheels fitted with low friction bearings and a lightweight cage made from 7075 Alloy. Coated bearings prolong the lifetime of the system even further, making the oversized pulley wheels last 3-5 times longer than the commonly used standard pulleys on the market.
The OSPW system is compatible with Shimano XTR M9000/M9050, XT M8000/M8050, and SLX M7000 11s rear derailleur, and has been proven to be the fastest pulley system in the world, providing energy savings starting from 2.4 watts. The system almost has the same efficiency ratio with Ceramicspeed.
The KCNC Wheel Bearings reduce friction, which gives a lower rolling resistance, maximising the return you get from your energy. Upgrading your wheel bearings to oversized pulley will provide you with the ultimate efficiency and superior performance.
The KCNC SXT Mountain E-Bike Bicycle Bike Oversized Pulley Rear Derailleur Cage OSPW is made of AL7075 Fully CNC material and is available in black, red, and gold colours. The weight of the system is approximately 70 grams, making it lightweight and easy to install.
In summary, the KCNC SXT Mountain E-Bike Bicycle Bike Oversized Pulley Rear Derailleur Cage OSPW for Shimano Deore XTR/XT/SLX M9000/M9050/M8000/M8050/M7000 11 Speed use(Gold) is a high-performance upgrade for your drivetrain that provides ultimate efficiency and superior performance. The system reduces friction and provides optimised performance, resulting in overall power savings of 30%-60% or more in some cases over a stock setup. The OSPW system is compatible with Shimano XTR M9000/M9050, XT M8000/M8050, and SLX M7000 11s rear derailleur, and has been proven to be the fastest pulley system in the world.
7. Meghna Shimano Tourney Rd-Ty300 6/7-Speed Rear Derailleur Road Mtb Bike Mountain Bike Direct Mount
The MEGHNA Shimano Tourney RD-TY300 6/7-Speed Rear Derailleur is a high-quality component for road and mountain bikes. This derailleur is designed for smooth shifting and is easy and fast to install. It features a bracket fit (under wheel nut) and a long cage tourney derailleur. This derailleur is compatible with 11T /14T high speed gear and is designed for use with 6 and 7-speed SIS INDEX variable speed transmission systems.
One of the key features of the MEGHNA Shimano Tourney RD-TY300 6/7-Speed Rear Derailleur is its B tension adjustment screw. This screw allows the user to adjust the distance between the upper guide wheel and the tooth tip of the largest flywheel. This adjustment is critical for ensuring smooth shifting and preventing the derailleur from rubbing against the cassette.
The MEGHNA Shimano Tourney RD-TY300 6/7-Speed Rear Derailleur is compatible with a wide range of sprocket sizes. The maximum sprocket size is 34T, while the minimum sprocket size is 11T. This makes the derailleur suitable for a range of different riding conditions, from steep climbs to fast descents.
The long cage tourney derailleur on the MEGHNA Shimano Tourney RD-TY300 6/7-Speed Rear Derailleur is designed to work with 11T /14T high speed gear. This makes it ideal for riders who demand high performance and precision from their bike's drivetrain. The long cage design also helps to keep the chain in place, reducing the risk of chain drop and improving overall shifting performance.
Overall, the MEGHNA Shimano Tourney RD-TY300 6/7-Speed Rear Derailleur is a high-quality component that is ideal for both road and mountain bikes. Its smooth shifting, easy installation, and wide range of compatible sprocket sizes make it a versatile choice for riders of all skill levels. With its B tension adjustment screw and long cage tourney derailleur, this derailleur offers exceptional performance and precision, ensuring a smooth and efficient ride every time.
8. Mongoose Argus Trail Youth Fat Tire Mtb, 24" Wheels, Small 12" Aluminum Frame, Disc Brakes, 2×8 Drivetrain, Red.
The Mongoose Argus Trail Youth Fat Tire Mountain Bike is designed for those who crave adventure on all types of terrain. This bike is perfect for riders who are 8 years and above or who are between 4'9 and 5'3 inches tall. With its 24-inch wheels and small 12-inch aluminum hardtail frame, this bike offers a stable and strong ride that can handle any challenge.
One of the standout features of this bike is its 2×8 drivetrain, which provides a wide gear range that can easily tackle any terrain. The rapid-fire shifters make it easy to switch gears quickly and effortlessly, ensuring that you can keep up with any pace. The mechanical disc brakes provide excellent stopping power in all conditions, making it easy to slow down and stop when necessary.
The 24 x 4 inch knobby mountain fat tires provide exceptional traction in sand and snow, making it possible to ride in any season. These tires also offer excellent stopping power, ensuring that you can stop quickly and safely when needed. The alloy fork with 135 mm spacing adds to the stability of the bike, making it easy to handle even on rough terrain.
Overall, the Mongoose Argus Trail Youth Fat Tire Mountain Bike is an excellent choice for anyone who loves to ride off-road. Its durable design and top-notch components make it a reliable and versatile bike that can handle anything you throw at it. With its comfortable seat and ergonomic handlebars, this bike is also comfortable to ride for long periods, making it perfect for all-day adventures.
9. Shimano Rd-Ty300 Rear Derailleur For 6/7 Speed Road And Mountain Bikes With Direct Mount.
The ENBO Shimano Bike Rear Derailleur RD-TY300 is a high-quality component for smooth and reliable gear shifting on your bike. Designed for use with 6 and 7-speed SIS INDEX variable speed transmission systems, it is compatible with 11T /14T high speed gear to ensure optimal performance under a range of conditions.
Constructed from durable aluminum alloy material, the ENBO Shimano Bike Rear Derailleur RD-TY300 is built to last, providing long-lasting performance and stability on the road or trail. Its excellent shifting performance ensures safe and stable riding, while the direct mount design makes it easy to use and maintain.
Whether you're a seasoned cyclist or just getting started, the ENBO Shimano Bike Rear Derailleur RD-TY300 is a versatile and reliable choice for your bike. It is suitable for use with a wide range of bikes, including MTB, mountain bikes, road bikes, folding bicycles, and more.
If you have any questions or concerns about the ENBO Shimano Bike Rear Derailleur RD-TY300, the manufacturer is happy to provide quality service and support. So, you can buy with confidence, knowing that you are getting a top-quality product that will provide years of reliable performance on your bike.
10. Mohegia Bike Rear Derailleur Rd-Ty21b 6/7 Speed Direct Mount For Mountain Bicycle-Black
The MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount is a high-quality bike part that is compatible with 6/7 speed mountain bikes. It is designed to provide a safe and stable riding experience for bikers. The rear derailleur is made of durable aluminum alloy material that is resistant to wear and tear. It also has excellent shifting performance that ensures smooth gear changes.
One important thing to note about this product is that it is direct mount and not hub bolt mount. Therefore, it is advisable to check the mount type of the original part before ordering to ensure compatibility. This will save you the hassle of returning the product in case it is not compatible with your bike.
The MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount is easy to use and maintain. It is suitable for a wide range of bikes, including MTB, mountain bikes, road bikes, folding bicycles and so on. This makes it a versatile bike part that can be used by bikers of different skill levels.
The product comes in black color, which is a great addition to any bike. Its sleek and stylish design adds to the overall aesthetic appeal of your bike. The MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount is a reliable and efficient bike part that is designed to enhance your riding experience.
In case you have any questions or concerns about the product, the manufacturer provides quality customer service. They are always available to assist you and provide the necessary support. This ensures that you have a seamless shopping experience and can enjoy your bike to the fullest.
In conclusion, the MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount is a must-have bike part for any biker. It is durable, efficient, and easy to use. Its compatibility with different types of bikes makes it a versatile product that can be used by bikers of different skill levels. The manufacturer's commitment to quality customer service ensures that you get the necessary support whenever you need it.
Best Derailleur For Mountain Bike FAQs
How do I know if my mountain bike's derailleur needs to be replaced, and what signs should I look for?
As a professional, there are several signs to look for when determining if a mountain bike's derailleur needs to be replaced. Firstly, if you notice that the shifting is becoming increasingly difficult or the chain is skipping gears, it could indicate that the derailleur is worn out or damaged. Similarly, if the derailleur is making unusual noises or appears to be misaligned, it may be time for a replacement. Additionally, if the derailleur hanger (the part that attaches the derailleur to the frame) is bent or damaged, it can affect the performance of the derailleur and may need to be replaced as well. In general, if you're experiencing any issues with gear shifting or notice any visible damage to the derailleur or its components, it's best to have it inspected by a professional bike mechanic to determine if a replacement is necessary.
How do I properly adjust the derailleur on my mountain bike for optimal shifting performance?
To adjust the derailleur on your mountain bike for optimal shifting performance, follow these steps:
1. Shift your bike into the highest gear and adjust the high limit screw until the derailleur is aligned with the smallest cog.
2. Shift your bike into the lowest gear and adjust the low limit screw until the derailleur is aligned with the largest cog.
3. If your bike still does not shift properly, adjust the cable tension by turning the barrel adjuster until the shifting is crisp and precise.
4. Check the chain for wear and replace it if necessary.
5. Finally, ensure that the derailleur is properly aligned with the chain by checking the gap between the top jockey wheel and the largest cog.
By following these steps, you can ensure that your mountain bike's derailleur is properly adjusted for optimal shifting performance, allowing you to ride smoothly and efficiently on any trail.
What are some of the best derailleur options for upgrading a mountain bike?
When it comes to upgrading a mountain bike's derailleur, there are several options available in the market. Some of the best derailleur options include Shimano XT M8000, SRAM GX Eagle, Shimano Deore XT M8100, and Shimano SLX M7100. These derailleurs offer improved shifting performance, durability, and precision. The Shimano XT M8000 is a popular choice among mountain bikers due to its smooth shifting and lightweight design. The SRAM GX Eagle is known for its wide gear range and ease of use. The Shimano Deore XT M8100 offers improved shift speed and accuracy, while the Shimano SLX M7100 provides a reliable and affordable option for mountain bikers. Ultimately, the best derailleur upgrade will depend on personal preferences and budget.
What are the differences between a front and rear derailleur, and how do they affect my mountain bike's performance?
A front derailleur is responsible for shifting the chain between the chainrings on the crankset, while a rear derailleur is responsible for shifting the chain between the different cogs on the rear cassette. The front derailleur allows for a greater range of gears, but can be more difficult to shift smoothly. The rear derailleur is typically easier to shift and provides more precise gear changes.
The performance of a mountain bike is affected by both the front and rear derailleur. A well-adjusted front derailleur can provide a wider range of gears, making it easier to tackle steep climbs and rough terrain. A well-adjusted rear derailleur can provide smoother gear changes, allowing the rider to maintain their speed and power output more efficiently. A poorly adjusted derailleur can result in chain slippage, misalignment, and decreased performance. Therefore, it is important to regularly maintain and adjust both the front and rear derailleur to ensure optimal performance on the trails.
What is a derailleur, and how does it work on a mountain bike?
A derailleur is a mechanism used on a mountain bike to change gears. It is attached to the bike's frame and works by moving the chain between different sized sprockets on the rear wheel. This allows the rider to adjust the gear ratio, making it easier or harder to pedal depending on the terrain.
The derailleur consists of two main parts: the cage and the pulleys. The cage is a metal plate that holds the chain and is attached to the bike's frame. The pulleys are small wheels that rotate as the chain moves through them. The derailleur is controlled by a shifter, usually located on the handlebars, which moves a cable that in turn moves the derailleur.
As the rider shifts gears, the derailleur moves the chain up or down the cassette, changing the gear ratio. This allows the rider to maintain a consistent pedaling cadence, even as the terrain changes. Mountain bikes typically have multiple gears, with a range of ratios suited for different types of riding, from steep climbs to fast descents.