SRAM 03T10035397 Front Derailleur Braze Double Bottom Road

( Brand: Sram ), ( Manufacturer Part Number: 03T10035397 ), ( Part Type: Derailleur Bottom Pull ), ( Mounting Type: Braze-on ), ( Number Of Chainrings: Double ), ( Cable Pull Type: Bottom Pull ), ( Color: Gray ), ( Set Includes: Derailleur ), ( Compatible Bike Type: Road Bike, Racing Bike ), ( Material: Aluminum Alloy, Steel, Plastic )

Review SRAM Red Front Derailleur Braze on Double Bottom Pull Road Grey

The **SRAM 03T10035397 Braze-On Double Bottom Front Derailleur** is a precision-engineered component designed to deliver seamless shifting performance while maintaining a clean, minimalist aesthetic on modern road bikes. Part of SRAM s refined **Force** line, this derailleur is meticulously crafted to accommodate a **double bottom bracket** setup, ensuring optimal chain alignment and smooth operation across a wide range of drivetrains, including 1x and 2x systems. Its **braze-on design** eliminates the need for a cage clamp, allowing for a more integrated and streamlined look, particularly on frames with integrated headset systems or carbon forks where cable routing must be both efficient and unobtrusive. The derailleur features **SRAM s proprietary shifting technology**, including a **highly responsive cable-actuated mechanism** that minimizes ghost shifting and ensures consistent engagement with the chain, even under demanding conditions. Constructed from **durable aluminum**, the derailleur balances strength and weight efficiency, while its **precision-machined pulleys** and **optimized spring tension** contribute to reduced chain slap and improved durability over time. The **adjustable limit screws** provide fine-tuning for precise shifting range, accommodating various frame geometries and wheel sizes, while the **cable entry point** is strategically positioned to minimize friction and ensure smooth operation. Whether paired with a **1x12, 1x11, or 2x11 drivetrain**, this derailleur excels in both performance and versatility, making it an ideal choice for riders seeking a blend of reliability, aesthetics, and cutting-edge shifting technology. Its compatibility with **SRAM s Force and Rival groupsets**, as well as select third-party components, further enhances its appeal for those looking to build or upgrade a high-performance road bike.

The SRAM 03T10035397 is a **braze-on double front derailleur** designed for road bikes, specifically for use with **1x drivetrains** (single-chainring setups). Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the SRAM 03T10035397 Braze-On Double Front Derailleur**

1. **Compatibility with 1x Drivetrains**

- This derailleur is optimized for **1x setups**, which are now the standard in modern road cycling. It works seamlessly with SRAM s **XX1, X01, or GX 1x drivetrains**, reducing complexity and improving reliability compared to traditional double-chainring systems.

2. **Lightweight Construction**

- SRAM s derailleurs are known for being **lighter than many competitors**, which can contribute to a more agile bike. The 03T10035397 is no exception, helping to reduce overall frame weight.

3. **Durability and Reliability**

- SRAM s components are built with **high-quality materials** and precise engineering, leading to **long-lasting performance** with minimal maintenance. The braze-on design ensures a secure mount without the need for a cage clamp, reducing potential points of failure.

4. **Smooth Shifting**

- SRAM s **e-Tech shifting system** (used in XX1/X01) provides **precise, consistent shifting**, even in wet or dirty conditions. This derailleur is designed to work smoothly with SRAM s shift levers and derailleurs.

5. **Wide Compatibility with Chainrings**

- While primarily for 1x setups, it can accommodate **smaller double-chainring setups** (though this is not its intended use). It works well with **34T, 36T, or 38T single chainrings**, which are common in 1x systems.

6. **Easy Installation**

- The **braze-on design** means no need for a cage clamp, simplifying installation. It mounts directly to the frame, reducing potential issues with misalignment or loosening over time.

7. **Compatibility with SRAM s E-Bike Systems (Optional)**

- If paired with an **SRAM e-TAP system**, this derailleur can work with **e-bike drivetrains**, though it is not specifically marketed for e-bikes.

8. **Good for Climbing and Efficiency**

- Since it s designed for 1x setups, it **eliminates the need for shifting between chainrings**, which can be a distraction during climbs. This makes it ideal for **endurance riding and long-distance cycling**.

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### **Cons of the SRAM 03T10035397 Braze-On Double Front Derailleur**

1. **Limited to 1x Setups (Not True Double)**

- While it can technically work with a **double chainring**, it is **not optimized for this use**. If you plan to run a **true double-chainring setup**, you would need a **proper double front derailleur** (e.g., SRAM s **03T10035398** or **Shimano s FD-M3000**).

- Running a double chainring with this derailleur may lead to **poor shifting performance** and **chain rub** issues.

2. **Higher Cost Compared to Basic Options**

- SRAM s **XX1/X01/GX** components are **more expensive** than entry-level alternatives (e.g., Shimano s **Deore FD-M3100** or **SRAM s NX** series). If you re on a budget, this may not be the most cost-effective choice.

3. **Requires SRAM Compatibility**

- If you re mixing brands (e.g., SRAM derailleur with Shimano chainrings or cranks), **shifting may not be as smooth**. SRAM s e-Tech system is **best paired with SRAM s own components** for optimal performance.

4. **Limited Aftermarket Support**

- While SRAM has a strong reputation, **aftermarket parts (e.g., chain guides, spacers) may be less available** compared to Shimano, which has a much larger ecosystem.

5. **Not Ideal for Aggressive Double-Chainring Shifting**

- If you **frequently shift between two chainrings** (e.g., for varied terrain), a **true double front derailleur** would be more appropriate. This derailleur is **best for 1x setups where shifting is minimal**.

6. **Potential Chain Line Issues**

- If installed incorrectly, the **chain line may not be perfect**, leading to **chain rub** or **poor shifting**. This requires **precise setup**, which may be challenging for beginners.

7. **Weight Sensitivity in Some Cases**

- While lightweight, **ultra-lightweight riders** (e.g., those racing in aero bikes) may prefer **even lighter derailleurs** (e.g., **Shimano s FD-M8000** or **Campagnolo s ultra-light options**).

---

### **Conclusion**

The **SRAM 03T10035397 Braze-On Double Front Derailleur** is an **excellent choice for riders using a 1x drivetrain**, particularly those who want **smooth shifting, reliability, and compatibility with SRAM s high-end components**. It eliminates the complexity of double-chainring setups while maintaining **lightweight performance and durability**.

However, if you **plan to run a true double-chainring system**, this is **not the right derailleur** you would need a **proper double front derailleur**. Additionally, if budget is a concern, **lower-cost alternatives** (e.g., Shimano Deore or SRAM NX) may suffice for casual riders.

For **serious 1x riders, climbers, or those prioritizing SRAM s shifting technology**, this derailleur is a **strong recommendation**. For **double-chainring setups or budget-conscious buyers**, other options may be more suitable.

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### **Final Recommendation**

- You are running a **1x drivetrain** (SRAM XX1, X01, or GX).

- You want **smooth, reliable shifting** with minimal maintenance.

- You prefer **SRAM s e-Tech system** and compatibility with their ecosystem.

- You prioritize **lightweight and durable components**.

- You need a **true double-chainring front derailleur**.

- You are on a **tight budget** and can opt for Shimano Deore or SRAM NX instead.

- You plan to mix **non-SRAM components** and expect less-than-optimal shifting.

- You are an **ultra-lightweight racer** looking for the absolute lightest derailleur available.

- For **1x setups**, also look at **SRAM XX1 or X01 derailleurs** (if you want the best shifting).

- For **double-chainring setups**, consider **SRAM 03T10035398 (true double)** or **Shimano FD-M3000**.

- For **budget-friendly 1x**, **SRAM NX or Shimano Deore** derailleurs are solid choices.

Details:

Inner cage shows typical chain rub and light discoloration, the plastic skid plate at tail has scuffs but remains intact. SRAM Red braze-on front derailleur for double chainring road and racing bike drive trains. Brand and model: SRAM Red front derailleur with braze-on mounting interface bottom-pull cable routing, stamped manufacturer code 03T10035397 on the inner cage. SRAM Red Front Derailleur Braze-On Double Bottom Pull Road Grey 03T10035397.

Used SRAM Red braze-on front derailleur with cosmetic finish wear and small scratches on the outer cage linkage surfaces from prior use. Part type and use: front derailleur for mechanical SRAM road sifters double chainring crank sets on compatible racing bicycles that use a braze-on tab. Material and construction: aluminum alloy outer linkages cage plates with steel inner hardware, pivot pins, return spring, plus a molded plastic skid plate at the tail of. Spring action feels smooth and the pivots move freely, but braze-on mounting bolt is not included; listing for single front derailleur only as pictured.

part #: 03t10035397 prices

• $70.99-$249.99

specifications ribicycl:

• brand: Sram
• mpn: 03t10035397
• part type: Derailleur Bottom Pull
• mounting type: Braze-on
• number of chainrings: Double
• cable pull type: Bottom Pull
• color: Gray
• set includes: Derailleur
• compatible bike type: Road Bike, Racing Bike
• material: Aluminum Alloy, Steel, Plastic

seller ribicycl:

• # reviews: 34256
• rating: 100.0%
• city: Neenah, Wisconsin

shipping ribicycl:

• type: Fixed
• cost: $5.95
• class: Standard, Expedited
• transit: 2-5 Days
• service: Standard, Expedited

returns ribicycl:

• time: 60 Days
• policy: Returns Accepted
• paid by: Seller
• method: Money back

offer ribicycl:

• best offers: True
• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 1
• started: April 27, 2026

payments ribicycl:

• other
• credit card: Mastercard
• wallet: Apple-pay

general ribicycl:

• condition: Used
• Cycling > Bicycle Components Parts > Front Derailleurs

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