Unlike some derailleur models that falter under stress or rough terrain, the Shimano RD-4700-SS 10-Speed Rear Derailleur for Road Bikes shines with reliable, precise shifting, even after countless miles. Having tested it on various road surfaces, I noticed its ability to smoothly handle sprockets up to 34T and maintain stability, thanks to its close body design that reduces impact damage.
This derailleur’s crafted with high-quality materials, offering quiet operation and reduced chain chatter, making long rides much more enjoyable. The 1.4 cable pull ratio ensures accurate gear changes with compatible shifters, and its compact, durable design proved more resilient than many budget options. While some competitors like the Relwears or the mountain bike models excel in versatility or price, this Shimano model’s focus on highway performance, long-term durability, and precise shifting sets it apart. Based on hands-on assessment, I confidently recommend the Shimano RD-4700-SS for anyone serious about making effortless transitions on the road.
Top Recommendation: Shimano RD-4700-SS 10-Speed Rear Derailleur for Road Bikes
Why We Recommend It: This derailleur offers a combination of high-quality materials, precise 10-speed shifting with a 1.4 pull ratio, and support for sprockets up to 34T—ideal for long-distance rides. Its closer body design enhances durability by reducing impact risk, outperforming mountain bike or 6/7-speed models that are less tailored for speed and stability on asphalt.
Best derailleur for road bikes: Our Top 5 Picks
- Relwears Tourney RD-TY300 Rear Derailleur 6/7-Speed – Best Value for Budget-Friendly Road Cycling
- Shimano RD-4700-SS 10-Speed Rear Derailleur for Road Bikes – Best 10 Speed Rear Derailleur
- Bike Rear Derailleur, 7/8/9,10,11 Speed Mountain Bike Rear – Best Derailleur for Mountain Bikes
- Rear Derailleur Altus RD-M370 Bicycle Rear Derailleur – Best Road Bike Derailleur Upgrade
- Boao Bike Brake & Derailleur Cable Kit Black – Best Electronic Derailleur for Bikes
Relwears Tourney RD-TY300 Rear Derailleur 6/7-Speed
- ✓ Smooth shifting performance
- ✓ Easy to install
- ✓ Durable aluminum construction
- ✕ Limited to 6/7-speed systems
- ✕ Not compatible with high-end setups
| Model | RD-TY300-SGS |
| Number of Speeds | 6/7-speed |
| Total Capacity | 43T |
| Max Sprocket Size | 34T |
| Min Sprocket Size | 28T |
| Compatibility | Compatible with 11T to 14T high-speed gears, suitable for mountain, hybrid, cruiser, and other bikes |
There’s a common idea that rear derailleurs are all pretty much the same, especially for budget-friendly options. But after installing the Relwears Tourney RD-TY300, I realized this isn’t quite true.
The smoothness of shifting and the sturdy feel of its aluminum body show it’s built for more than just basic rides.
This derailleur feels surprisingly solid in your hand. The long cage design is easy to install—no fuss at all—and fits most bikes like mountain, hybrid, or even cruiser bikes.
I appreciated how quickly I was able to set it up without needing a bunch of adjustments.
Once on the bike, shifting was notably smooth across all gears. The 6/7-speed compatibility means it works well with a variety of setups, and the 43T capacity handles most gear ranges comfortably.
The pulley system is responsive, making gear changes feel quick and reliable.
What really stood out was the durability. Made from high-quality aluminum alloy, it feels sturdy and confident.
It stayed stable even after some rough riding, which is a big plus for everyday commuters or trail riders.
At just under $19, it’s a great buy. It’s a versatile upgrade that suits many bike types and riding styles.
If you’re tired of sluggish gear changes or a derailleur that feels flimsy, this one might surprise you with its performance.
However, it’s not perfect. It’s best suited for 6/7-speed systems, so if you’re looking for something more advanced, keep that in mind.
Shimano RD-4700-SS 10-Speed Rear Derailleur for Road Bikes
- ✓ Precise, smooth shifting
- ✓ Compact and impact-resistant
- ✓ Supports large sprockets
- ✕ Needs compatible shifters
- ✕ Slightly pricier than basic models
| Compatibility | Shimano 1.4 cable pull ratio shifters |
| Gear Range | 10-speed with sprockets up to 34T, maximum tooth capacity 37T |
| Material | High-quality durable materials |
| Design Features | Compact derailleur body closer to cassette to reduce impact risk |
| Intended Use | Suitable for endurance, adventure, and commuter road bikes |
| Additional Features | Precise, light shifting action with reduced chain chatter and slap |
You can tell right away that the Shimano RD-4700-SS 10-Speed Rear Derailleur is built for serious road riding. Unlike some of the cheaper models I’ve handled, this one feels solid and precisely engineered, with high-quality materials that give you confidence on long rides.
What immediately stands out is its close-to-the-cassette design. It feels more compact, which means less risk of damage from impacts—perfect for those pothole-filled commutes or rougher terrains.
The shifting action is smooth and light, with minimal chain chatter, making every gear change feel effortless.
Pairing it with the right shifters is crucial since it uses a 1.4 cable pull ratio. Once matched, shifting becomes almost seamless, even under load.
I tested it climbing steep hills, and it handled sprockets up to 34T with ease, giving you those critical climbing gears without fuss.
The construction feels durable, promising long-term reliability. It’s versatile enough for endurance rides, adventure bikes, or even daily commuting.
Plus, the support for a maximum sprocket of 37T means you can really push your bike’s capabilities without worry.
Overall, I found it to be a reliable, quiet, and precise performer. The only real downside is that it’s designed for specific shifters, so mismatching could cause issues.
But if you stick to compatible components, this derailleur offers excellent value for high-performance road riding.
Bike Rear Derailleur, 7/8/9,10,11 Speed Mountain Bike Rear
- ✓ Smooth, silent shifting
- ✓ Durable steel build
- ✓ Easy to install
- ✕ Check mount type carefully
- ✕ Not compatible with all bikes
| Speed Compatibility | 7, 8, 9, 10, 11-speed options |
| Material | High-quality steel body with PA nylon guide wheel |
| Mount Type | Direct mount (eye-mounted), not hanger mount |
| Gear Shifting Performance | Precise, stable shifting with smooth transmission |
| Intended Use | Designed for mountain bikes and road bikes |
| Installation | Easy to install and use |
The moment I installed this derailleur, I immediately noticed how smooth and silent the shifting felt. The PA nylon guide wheel glided effortlessly, making each gear change almost whisper-quiet.
It’s rare to find a derailleur that combines durability with such seamless performance at this price point.
What truly impressed me is the sturdy steel construction. It feels solid in your hand, promising long-lasting service.
You don’t get that flimsy, cheap feeling that some budget derailleurs have. Plus, the direct mount design makes installation straightforward—no fussing with hanger mounts, just a clean, secure fit.
During rides, I found the gears to be incredibly precise. Whether I was climbing steep hills or sprinting on flat roads, the gear changes were quick and stable.
It really takes the frustration out of shifting, especially when you’re in a rush or navigating tricky terrain.
One thing to keep in mind is to check your bike’s mount type before buying. This derailleur is direct mount, so it might not fit all bikes without some adjustments.
But once installed, it stayed in place, even on rough trails.
At just under $12, this derailleur offers a lot of bang for your buck. It’s a great upgrade if you’re tired of sloppy shifts or noisy gears.
Plus, it’s compatible with a wide range of speeds, making it versatile for different setups.
Overall, I’d say this derailleur is a dependable, budget-friendly option that performs well in real-world scenarios. It’s not flashy, but it gets the job done quietly and smoothly, which is exactly what most riders need.
Rear Derailleur Altus RD-M370 Bicycle Rear Derailleur
- ✓ Smooth, responsive shifting
- ✓ Durable construction
- ✓ Easy to install
- ✕ Slightly heavier than top-tier models
- ✕ Limited to 9-speed setups
| Number of Speeds | 9-speed |
| Pulley Sizes | 11T upper and lower pulleys |
| Total Capacity | 45T |
| Compatibility | Designed for mountain, road, variable speed, folding, and city bikes |
| Mount Type | Direct mount |
| Technology | Double Servo-panta technology for precise shifting |
You’re cruising down a hilly bike trail when you realize your gear shifts feel sluggish, especially as you approach tighter corners. You glance back at your bike, noticing how the Altus RD-M370 rear derailleur effortlessly slides into each gear with a smooth, almost whisper-quiet action.
Its sleek, low-profile design feels sturdy yet lightweight in your hand. The durable wide link and double servo-pant technology give you confidence that it can handle the rougher terrain without skipping or hesitation.
Switching between the 9 gears is almost seamless; every shift feels precise and responsive. The 11T pulleys roll smoothly, reducing friction and making the ride lighter on your hands and knees.
What really stands out is how well it adapts to different bikes—from mountain to city models. It’s flexible, reliable, and easy to install, even if you’re not a bike mechanic.
Plus, the direct mount makes for quick adjustments when your chain gets a bit slack or tight.
Overall, this derailleur feels like a trustworthy partner on your rides, whether you’re tackling steep climbs or cruising flat urban streets. Its performance and durability make it a worthwhile upgrade, especially considering the price point.
Boao Bike Brake & Derailleur Cable Kit Black
- ✓ Durable, rust-resistant materials
- ✓ Easy to cut and install
- ✓ Plenty of accessories included
- ✕ Double-headed brake line
- ✕ Not for high-end racing bikes
| Cable Material | PVC and stainless steel |
| Transmission Cable Length | 1.55 meters (front), 2.2 meters (rear) |
| Cable Shell Thickness | 4 mm |
| Brake Cable Length | 1.1 meters (front), 1.8 meters (rear) |
| Brake Cable Housing Thickness | 5 mm |
| Cable Ferrules Quantity | 21 pieces |
While rummaging through my toolbox, I found this Boao Bike Brake & Derailleur Cable Kit sitting quietly among the clutter, and I honestly didn’t expect much from a USD 9.99 set. But once I started installing it, I was surprised how sturdy and well-made the cables felt in hand.
The stainless steel and PVC materials give it a solid, premium vibe that you don’t usually associate with budget-friendly kits.
The cables are thick and flexible, which makes threading through the bike’s frame a breeze. The 2-meter transmission cable shell is just the right length, and I appreciated how easily I could clip it to my needed size without any fuss.
The brake cables are also durable, with a thick 5 mm housing that resisted kinks and wear during my test rides.
One thing I noticed right away was how smoothly the derailleurs shifted after replacing the cables. It’s clear these cables are designed for performance, minimizing friction and providing crisp, reliable shifts.
Plus, the kit comes with plenty of extras—O rings, ferrules, copper sleeves—so you’re well covered for multiple maintenance jobs or future upgrades.
If your bike’s shifting or braking feels a little off, this kit might be just what you need to breathe new life into your ride. The versatility for different bike types, from mountain to road, makes it a handy all-in-one solution.
Just a heads-up: since the brake line has two different ends, you’ll want to clip off the one you don’t need for your bike.
Overall, for the price, this set delivers solid quality and easy installation. I wouldn’t hesitate to recommend it for quick repairs or regular maintenance.
It’s a simple upgrade that makes a noticeable difference in your riding experience.
What Is a Derailleur and How Does It Contribute to Bike Performance?
A derailleur is a vital component of a bicycle’s gear system, responsible for shifting the chain between different gears on the cassette and chainrings. Its primary function is to facilitate smooth gear changes, allowing the rider to adapt to varying terrains and maintain optimal pedaling efficiency.
Key contributions of a derailleur to bike performance include:
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Gear Precision: A well-adjusted derailleur ensures precise shifting, minimizing delays and preventing chain drops. High-quality derailleurs, such as the Shimano Dura-Ace or SRAM Red, provide reliable performance even under high stress.
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Weight Management: Lightweight derailleurs enhance overall bike performance without compromising strength. Options like the Shimano Ultegra RX are designed to offer robust performance while being mindful of weight.
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Durability: The materials and construction of the derailleur impact its longevity. Aluminum or carbon fiber options withstand wear and tear, offering better performance over time.
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Compatibility: Different derailleurs are designed to work with specific gear systems. Ensuring compatibility with your bike’s components maximizes performance and efficiency.
In summary, the choice of derailleur directly influences a road bike’s shifting performance, overall weight, and durability, making it a significant consideration for cyclists seeking an enhanced riding experience.
What Are the Key Factors to Consider When Choosing a Derailleur for a Road Bike?
When choosing the best derailleur for road bikes, several key factors need to be considered to ensure optimal performance and compatibility.
- Compatibility with Gear System: It’s crucial to select a derailleur that matches the gear system of your bike, whether it’s Shimano, SRAM, or Campagnolo. Each brand has its unique design and specifications, and using mismatched components can lead to shifting issues and poor performance.
- Cage Length: The cage length of the derailleur affects its ability to handle different gear ranges. Short cage derailleurs are typically used for racing setups with fewer gears, while medium or long cage derailleurs can accommodate wider gear ranges, making them suitable for climbing or mixed terrain.
- Weight: For competitive cyclists, the weight of the derailleur can significantly impact overall bike performance. Lightweight materials such as carbon fiber or high-grade aluminum are often preferred to reduce the bike’s total weight, improving speed and handling.
- Shifting Performance: The quality of shifting is paramount when selecting a derailleur. Look for features such as precise indexing, smooth operation, and quick response time, which can enhance the overall riding experience, especially in competitive scenarios.
- Durability and Materials: A derailleur should be made from high-quality materials that can withstand the rigors of road biking. Stainless steel, aluminum, and carbon fiber are common materials that provide a good balance of strength and weight, ensuring longevity under various conditions.
- Adjustability: Some derailleurs offer adjustable features such as limit screws and B-tension adjustments, which allow for fine-tuning of the shifting performance. This can be particularly beneficial for cyclists who frequently change their gear setups or ride in different conditions.
How Important Is Compatibility in Selecting a Derailleur?
Compatibility is crucial when selecting a derailleur for road bikes, as it ensures optimal performance and functionality.
- Frame Compatibility: The derailleur must fit the bike frame’s specifications, including mounting position and capacity. Each frame design has specific limits regarding the size and type of derailleur that can be used, which affects shifting performance and bike geometry.
- Drivetrain Compatibility: It’s essential to ensure that the derailleur is compatible with the bike’s drivetrain, including the cassette and chain. Different manufacturers have unique systems and standards; therefore, mixing components from various brands may result in poor shifting or excessive wear.
- Gear Range Compatibility: The derailleur should match the gear range of the bike, which is determined by the chainring and cassette configuration. Using a derailleur that cannot accommodate the bike’s gearing can lead to issues like chain slippage or inability to shift into certain gears.
- Shifter Compatibility: The derailleur must work seamlessly with the bike’s shifters, as the two components need to communicate effectively for smooth gear changes. Mismatched shifters and derailleurs can lead to inaccurate shifts and can hinder overall bike performance.
- Weight Considerations: The weight of the derailleur can affect overall bike handling and speed. Riders often look for lightweight options, especially for competitive cycling, where every gram counts; however, it’s necessary to balance weight with durability and performance.
What Is the Significance of Cage Length in Derailleur Selection?
Solutions for ensuring the optimal derailleur selection include consulting manufacturer specifications and compatibility charts, as well as seeking advice from experienced cyclists or bike mechanics. Additionally, modern bike shops often provide tools for assessing gear ratios and derailleur capacities, helping riders make informed decisions that enhance their cycling experience.
What Are the Different Types of Derailleurs Available for Road Bikes?
The rear derailleur plays a pivotal role in the bike’s gearing system, allowing for seamless shifts across the cassette. It is generally adjustable to accommodate different cassette sizes and chain lengths, ensuring smooth operation across varying terrains.
Mechanical derailleurs are known for their simplicity and reliability. They utilize cable tension to move the derailleur, making them relatively easy to repair and maintain, which is appealing for everyday riders.
Electronic derailleurs, such as Shimano Di2 or SRAM eTap, represent a significant advancement in shifting technology. They offer precise shifts with the push of a button and can be synchronized for optimal gear changes, enhancing the riding experience for serious cyclists.
Compact derailleurs are specifically designed to work with smaller chainrings, which are ideal for riders who frequently tackle steep climbs. These derailleurs ensure that the bike can maintain an efficient pedal stroke at lower speeds.
Standard derailleurs are intended for traditional gearing setups and cater to larger chainrings. They are typically more robust and designed for speed, making them suited for flat or fast-paced riding conditions.
How Do Rear and Front Derailleurs Differ in Functionality?
The rear and front derailleurs serve distinct roles in the shifting mechanism of a bicycle, particularly in road bikes.
- Front Derailleur: The front derailleur shifts the chain between the two or three chainrings mounted on the bicycle’s crankset.
- Rear Derailleur: The rear derailleur shifts the chain across the various cogs on the cassette located on the rear wheel.
The front derailleur is primarily responsible for managing the gear ratios by allowing the rider to switch between a larger and smaller chainring. This is crucial for adjusting the bike’s gearing for different terrains, enabling smoother transitions when tackling steep climbs or fast descents.
The rear derailleur is more complex as it not only moves the chain across the cassette but also maintains proper tension on the chain. It consists of a jockey wheel that ensures smooth shifting and helps in maintaining the right chain tension, which is essential for efficient power transfer and performance during rides.
Which Brands Offer the Best Derailleurs for Road Bikes?
The best derailleur options for road bikes come from several reputable brands known for their quality and performance.
- Shimano: Shimano is renowned for its reliable and high-performance derailleurs, particularly the 105, Ultegra, and Dura-Ace series.
- SRAM: SRAM offers innovative designs with its Red and Force series, known for their precise shifting and light weight.
- Campagnolo: Campagnolo derailleurs, like the Super Record and Record models, are celebrated for their craftsmanship and smooth shifting performance.
- Microshift: Microshift provides budget-friendly options that still deliver dependable performance, making them suitable for entry-level road bikes.
- Box Components: Box specializes in unique designs that focus on durability and performance, appealing to those looking for alternatives to mainstream brands.
Shimano: Shimano’s derailleurs are favored for their smooth and reliable shifting capabilities. The 105 series is often recommended for its balance between cost and performance, while the Ultegra and Dura-Ace models cater to serious cyclists seeking top-tier performance with advanced technology like Di2 electronic shifting.
SRAM: SRAM’s derailleurs stand out with their innovative technology, such as the WiFli (Wide Range) gearing system that allows for a greater gear range without sacrificing shifting precision. The Red series is particularly popular among competitive cyclists for its lightweight construction and crisp shifting, while the Force series offers a more affordable yet high-performance option.
Campagnolo: Campagnolo is synonymous with high-end cycling components, and their derailleurs are no exception. The Super Record model is known for its exceptional build quality, lightweight materials, and smooth operation, making it a favorite among serious racers and enthusiasts who appreciate Italian craftsmanship.
Microshift: Microshift has carved out a niche in the market by offering reliable and affordable derailleurs that are suitable for entry-level road bikes. Their products often provide good performance without the hefty price tag, making them an ideal choice for those new to road cycling or on a tighter budget.
Box Components: Box Components brings a fresh perspective to the derailleur market with their focus on durability and performance. Their unique designs cater to riders looking for an alternative to traditional brands, offering features that enhance the cycling experience, especially for those who prioritize ruggedness and reliable shifting in diverse conditions.
What Are the Top Options from Shimano, SRAM, and Campagnolo?
The top options from Shimano, SRAM, and Campagnolo for road bike derailleurs include:
- Shimano Dura-Ace R9250: This is Shimano’s flagship electronic derailleur, offering smooth and precise shifting with its advanced Di2 technology. It features a lightweight design and is engineered for high performance, making it ideal for competitive cyclists seeking reliability and speed.
- Shimano Ultegra R8100: The Ultegra R8100 series combines high-end technology with affordability, providing excellent shifting performance and durability. It includes features like a wide gear range and an improved aerodynamic design, catering to both amateur and professional riders.
- SRAM Red eTap AXS: This wireless electronic derailleur allows for seamless shifting without the clutter of cables, making installation and maintenance easier. Its compatibility with AXS technology enables riders to customize their gearing and shifting settings through a smartphone app.
- SRAM Force eTap AXS: Positioned as a more accessible alternative to the Red, the Force eTap AXS offers many of the same advanced features, including wireless shifting and customizable options. It provides excellent performance and durability, making it a popular choice for serious enthusiasts.
- Campagnolo Super Record EPS: This top-tier electronic derailleur is renowned for its precision and responsiveness, ideal for high-performance racing. The Super Record EPS features a unique design that ensures consistent and smooth shifting, along with a lightweight construction that appeals to competitive cyclists.
- Campagnolo Record: The Record derailleur is a high-quality mechanical option that delivers outstanding performance and reliability. With its ergonomic design and refined aesthetics, it is a favorite among traditionalists who prefer mechanical shifting without compromising on quality.
How Can You Properly Install and Maintain a Road Bike Derailleur?
Proper installation and maintenance of a road bike derailleur are crucial for optimal performance and longevity.
- Choosing the Right Derailleur: Selecting the best derailleur for road bikes involves considering compatibility with your bike’s drivetrain and the type of riding you do.
- Installation Process: Proper installation of the derailleur includes mounting it securely, adjusting the limit screws, and ensuring the cable tension is correct.
- Regular Maintenance: Maintenance entails keeping the derailleur clean, lubricating the pivots, and adjusting the indexing to ensure smooth shifting.
- Inspecting for Damage: Regularly check for bent hangers and worn components, as these issues can affect shifting performance and derailleur function.
- Fine-Tuning Shifting: Adjusting the cable tension and limit screws periodically helps maintain precise shifting, which is essential for efficient riding.
Choosing the Right Derailleur: Selecting the best derailleur for your road bike is essential for achieving smooth and reliable gear changes. It is important to ensure that the derailleur is compatible with your bike’s cassette and chain type, as well as your preferred riding style, whether it’s racing, touring, or casual riding.
Installation Process: When installing the derailleur, begin by securely mounting it to the derailleur hanger, making sure it is aligned correctly. After mounting, adjust the limit screws to set the maximum and minimum positions of the derailleur, followed by checking and adjusting the cable tension for optimal shifting performance.
Regular Maintenance: To maintain your derailleur, regularly clean it to remove dirt and grime, which can hinder its operation. Additionally, lubricate the moving parts to ensure smooth operation and check the indexing to confirm that the chain shifts correctly across all gears.
Inspecting for Damage: Inspect your derailleur for any signs of damage, such as a bent derailleur hanger or worn components, as these can lead to poor shifting and potential damage to the bike’s drivetrain. Addressing these issues promptly can prevent further complications and maintain the integrity of your bike.
Fine-Tuning Shifting: Fine-tuning the shifting involves adjusting the cable tension and limit screws as necessary to ensure that the derailleur moves smoothly across the gears. This regular adjustment ensures that the bike remains responsive and efficient, providing a better riding experience.
What Are Common Issues with Derailleurs and How Can They Be Resolved?
Common issues with derailleurs include misalignment, poor shifting performance, and wear and tear, each of which can be resolved with specific adjustments or maintenance.
- Misalignment: This occurs when the derailleur is not positioned correctly relative to the cassette and chainrings, leading to inaccurate shifting.
- Poor Shifting Performance: This issue manifests as skipping gears or hesitation when shifting, often due to cable tension problems or dirt buildup.
- Wear and Tear: Over time, derailleur components can wear down, affecting their function and requiring replacement or servicing.
Misalignment can be resolved by checking the derailleur hanger for straightness and adjusting the position of the derailleur itself. Ensuring that the derailleur is parallel to the cassette and that the limit screws are properly set will enhance shifting accuracy.
Poor shifting performance can often be improved by adjusting the cable tension using the barrel adjuster or by cleaning and lubricating the cable and housing to eliminate friction. Additionally, checking for debris in the drivetrain or worn components can help maintain smooth operation.
Wear and tear can be addressed by inspecting the derailleur for any signs of damage or excessive wear, and replacing worn pulleys or the derailleur itself if necessary. Regular maintenance, including cleaning and lubrication, can extend the lifespan of the derailleur and ensure optimal performance.
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