Description
Dropout – No 35 Black: Your Ultimate Guide to This Essential BMC Bike Spare Part
If you’re a cycling enthusiast or a dedicated BMC bike owner, you’ve likely encountered the need for reliable replacement parts to keep your ride smooth and efficient. One such crucial component is the Dropout – No 35 Black, a rear derailleur hanger designed specifically for certain BMC models. In this comprehensive blog post, we’ll dive deep into everything you need to know about the Dropout – No 35 Black, from its features and compatibility to installation tips and why it’s a must-have for urban cyclists. Whether you’re maintaining your Alpenchallenge or Urbanchallenge bike, understanding this part can save you time, money, and frustration on the road.
What Is a Bicycle Dropout and Why Does It Matter?
Before we zoom in on the Dropout – No 35 Black, let’s start with the basics. A bicycle dropout is the part of the frame where the rear wheel axle slots in. It’s essentially the “hanger” that connects the wheel to the frame and often supports the derailleur, which is vital for shifting gears smoothly. Dropouts come in various designs—vertical, horizontal, or replaceable—and they play a key role in chain tension, wheel alignment, and overall bike performance.
In the world of cycling, dropouts are often overlooked until they fail. A bent or broken dropout can lead to poor shifting, chain slippage, or even a complete halt to your ride. That’s where replaceable hangers like the Dropout – No 35 Black shine. These are engineered to be sacrificial parts, meaning they’re designed to bend or break in a crash to protect the more expensive frame from damage. Replacing a hanger is far cheaper and easier than repairing a frame.
BMC, a Swiss brand renowned for its high-quality urban and performance bikes, uses specific dropouts tailored to their models. The Dropout – No 35 Black is a prime example of their attention to detail, ensuring compatibility and durability for everyday commuters and weekend adventurers alike.

Introducing the Dropout – No 35 Black: Key Features and Specifications
The Dropout – No 35 Black is a rear derailleur hanger specifically crafted for select BMC bicycles. According to official product details, this part is compatible with models featuring internal gear hubs only, making it ideal for urban bikes that prioritize clean aesthetics and low maintenance. Its black finish not only matches the sleek look of many BMC frames but also provides a layer of protection against corrosion.
Let’s break down the specifications:
- Name: Dropout – No 35 Black
- SKU: 210562
- Description: Rear derailleur hanger for MY13 Alpenchallenge (internal gear hub only)
- Compatibility: MY14-17 Alpenchallenge 01, MY12 Masschallenge 01, MY12-13 Urbanchallenge 01 (internal gear hub only)
- Price: Approximately USD 19.00 (prices may vary by retailer)
- Included in the Box: 1x rear derailleur hanger
- Material: Likely high-strength aluminum or alloy, though exact composition isn’t specified—common for BMC parts to ensure lightweight yet robust construction.
What sets the Dropout – No 35 Black apart is its precision engineering. It’s designed to fit seamlessly into the frame, maintaining optimal chain line and derailleur alignment. For riders using internal gear hubs, this hanger ensures that the shifting mechanism remains protected and functional, even in harsh urban environments like pothole-ridden streets or rainy commutes.
If you’re wondering about durability, BMC’s reputation speaks for itself. Their parts are built to withstand the rigors of daily use, and the Dropout – No 35 Black is no exception. It’s a cost-effective way to extend the life of your bike without compromising on performance.

Compatibility: Which BMC Bikes Use the Dropout – No 35 Black?
One of the most important aspects when shopping for bike parts is ensuring compatibility. The Dropout – No 35 Black is tailored for specific BMC urban and hybrid models, particularly those from the early to mid-2010s. Here’s a detailed list:
- MY14-17 Alpenchallenge 01: This series is perfect for city commuting, with its lightweight frame and versatile gearing. The Dropout – No 35 Black supports the internal gear hub setup, keeping your ride low-maintenance.
- MY12 Masschallenge 01: Aimed at fitness-oriented riders, this model benefits from the hanger’s precise fit for smooth gear transitions.
- MY12-13 Urbanchallenge 01: Designed for urban exploration, these bikes often feature internal hubs, making the Dropout – No 35 Black an essential replacement part.
Note that this dropout is exclusively for internal gear hub systems. If your bike has an external derailleur, you’ll need a different model. Always double-check your bike’s model year and specifications before purchasing to avoid mismatches. If you’re unsure, consulting a BMC dealer or checking the frame’s serial number can help.
For owners of the Alpenchallenge line, the Dropout – No 35 Black is particularly valuable. The Alpenchallenge series is known for its speed and agility in city settings, blending road bike efficiency with hybrid comfort. Replacing a worn-out dropout with the Dropout – No 35 Black can restore that new-bike feel, ensuring your commutes are as enjoyable as ever.

Benefits of Using the Dropout – No 35 Black on Your Bike
Why choose the Dropout – No 35 Black over generic alternatives? Here are some compelling reasons:
- Frame Protection: As a replaceable hanger, it absorbs impact during accidents, safeguarding your expensive BMC frame.
- Improved Shifting: Precise alignment ensures smooth, reliable gear changes, especially with internal hubs.
- Aesthetic Match: The black color blends seamlessly with most BMC frames, maintaining a professional look.
- Cost-Effective: At around $19, it’s an affordable fix compared to custom repairs.
- Ease of Maintenance: Internal gear hubs require less upkeep, and this dropout supports that simplicity.
- Durability in Urban Conditions: Built to handle daily wear from city riding, including bumps and weather exposure.
Cyclists who frequently ride in urban areas will appreciate how the Dropout – No 35 Black contributes to a hassle-free experience. Imagine gliding through traffic with confident shifts—no more chain drops or misalignments. Plus, for eco-conscious riders, keeping your bike in top shape with genuine parts like the Dropout – No 35 Black reduces the need for frequent replacements, minimizing waste.
Step-by-Step Guide to Installing the Dropout – No 35 Black
Installing the Dropout – No 35 Black is a straightforward process that most home mechanics can handle with basic tools. However, if you’re not comfortable with bike repairs, we recommend visiting a professional shop. Here’s a high-level guide:
- Gather Tools: You’ll need Allen keys (typically 4mm and 5mm), a torque wrench, and possibly chain lube.
- Remove the Old Dropout: Shift to the smallest cog, remove the rear wheel, and unscrew the old hanger from the frame.
- Prepare the New Part: Inspect the Dropout – No 35 Black for any defects and apply a light coat of grease to the threads.
- Attach the Hanger: Align it with the frame’s mounting points and tighten the bolts to the recommended torque (usually 8-10 Nm—check your bike’s manual).
- Reinstall the Wheel and Derailleur: Ensure the chain is properly seated and test shifts.
- Test Ride: Take a short spin to verify everything works smoothly.
Remember, proper installation of the Dropout – No 35 Black is key to avoiding issues like chain rub or poor braking. If your bike has disc brakes, double-check caliper alignment after installation.
Where to Buy the Dropout – No 35 Black and Pricing Tips
The Dropout – No 35 Black is available directly from BMC’s official website or authorized dealers. Prices hover around $19, but shipping and taxes may apply. Online retailers like bike shops or cycling marketplaces often stock it, sometimes with bundle deals for other BMC parts.
When shopping, look for genuine BMC products to ensure quality. Counterfeits can fail prematurely, leading to safety risks. Reading reviews from other BMC owners can provide insights—many praise the Dropout – No 35 Black for its perfect fit and longevity.
Maintenance Tips for Longevity
To get the most out of your Dropout – No 35 Black, regular maintenance is essential. Clean the area around the dropout after rides, especially in wet conditions, to prevent buildup. Periodically inspect for bends or cracks, and lubricate moving parts. For internal gear hubs, follow BMC’s guidelines for hub servicing to complement the hanger’s performance.
Real-User Experiences with the Dropout – No 35 Black
Many cyclists have shared positive feedback on the Dropout – No 35 Black. One Alpenchallenge owner noted, “After a minor crash, replacing with the Dropout – No 35 Black got me back on the road in no time—shifts like new!” Another Urbanchallenge rider appreciated its affordability: “For under $20, it’s a no-brainer upgrade.”
These stories highlight how the Dropout – No 35 Black supports real-world cycling needs, from daily commutes to leisurely explorations.

Conclusion: Why the Dropout – No 35 Black Is a Smart Choice for BMC Riders
In summary, the Dropout – No 35 Black is an indispensable spare part for BMC bike enthusiasts, offering reliability, compatibility, and value. Whether you’re tackling urban challenges or maintaining your ride’s peak condition, this hanger ensures smooth performance without breaking the bank. Invest in the Dropout – No 35 Black today and keep your adventures rolling.
If you have questions about the Dropout – No 35 Black or other BMC parts, drop a comment below. Happy cycling!






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