SRAM FC-XX1-ASSY-C2 Eagle Carbon Dub Mountain Bike Crank Arm Sl 175MM Mount

( Brand: Sram ), ( Manufacturer Part Number: FC-XX1-ASSY-C2 ), ( Model: XX1 EAGLE FC-XX1-ASSY-C2 ), ( Part Type: Bike Crank Mount ), ( Compatible Brand: For Sram ), ( Crankarm Length: 175 Mm ), ( Color: Black ), ( Bottom Bracket Shell Type: Dub Sl ), ( Compatible Bike Type: Hardtail Bike, Mountain Bike ), ( Material: Carbon ), ( Set Includes: Crankset ), ( Number Of Speeds: 12 ), ( Country Of Origin: Taiwan )

Review SRAM Fc-x1-assy-c2 X1 Eagle Carbon Dub Mountain Bike Crank Arm Assembly 175mm Direct Mount

The **SRAM FC-XX1-ASSY-C2 XX1 Eagle Carbon Dub SL Mountain Bike Crank Arm (175mm Bottom Bracket Mount)** represents the pinnacle of modern bicycle drivetrain engineering, meticulously crafted for riders who demand uncompromising performance, durability, and efficiency in the most demanding off-road conditions. Engineered with SRAM s proprietary **XX1 Eagle** drivetrain system, this crank arm is designed to deliver an unprecedented 12-speed range, offering riders the precision and control needed to conquer steep climbs, technical descents, and everything in between. The **Carbon Dub SL** construction is a testament to SRAM s commitment to lightweight innovation, combining high-strength carbon fiber with a specialized damping system to absorb vibrations and road irregularities, ensuring a smoother, more comfortable ride without sacrificing stiffness or power transfer. The **175mm bottom bracket shell compatibility** makes this crank arm versatile for a wide range of frame designs, from aggressive enduro builds to all-mountain and trail-oriented setups, allowing riders to optimize their bike s geometry for their specific riding style and terrain.

What sets this crank arm apart is its integration with the **XX1 Eagle** drivetrain, which features a **12-speed cassette** capable of delivering an extraordinary gear ratio range from ultra-compact low gears for effortless climbing to high gears for explosive descents. The **Eagle** system s compact chainline and precise shifting performance minimize chain slap and improve efficiency, reducing mechanical friction and allowing riders to focus solely on their technique. The **Dub SL** carbon construction not only reduces weight significantly improving pedal efficiency but also enhances durability by dispersing stress more effectively than traditional aluminum or steel components. This crank arm is built to withstand the rigors of aggressive riding, including heavy braking, cornering forces, and repeated impacts, making it an ideal choice for riders pushing the limits of their bikes.

For those seeking the ultimate in performance and reliability, the **XX1 Eagle Carbon Dub SL** crank arm is a standout component that bridges the gap between cutting-edge technology and real-world durability. Whether paired with a lightweight carbon frame or a robust steel build, this crank arm ensures that every pedal stroke is efficient, every shift seamless, and every ride an extension of the rider s intent. Ideal for competitive enduro riders, trail enthusiasts, or anyone looking to elevate their mountain biking experience, this component is a testament to SRAM s dedication to pushing the boundaries of what a bicycle drivetrain can achieve.

The SRAM FC-XX1-ASSY-C2 XX1 Eagle Carbon Dub SL mountain bike crank arm (175mm BCD, mount) is a high-end drivetrain component designed for performance-oriented riders. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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1. **Ultra-Lightweight Construction**: The crank arm is made from carbon fiber, which significantly reduces weight compared to aluminum or steel cranks. This contributes to a more agile and responsive bike, particularly in climbing and cross-country riding. The weight savings can also improve acceleration and handling.

2. **High Efficiency and Performance**: The XX1 Eagle drivetrain is known for its smooth shifting and precise gearing. The single-ring setup eliminates chainline issues and reduces mechanical complexity, which can improve efficiency, especially in demanding terrain. The Eagle cassette (with its wide range of 10-speed ratios) allows for optimal gearing for both climbing and descending.

3. **Durability and Strength**: Carbon fiber is not only lightweight but also highly durable when designed for high-performance applications. The Dub SL (Dual-Bore SL) design integrates the bottom bracket into the crank arm, reducing weight and improving stiffness. This setup is robust enough for aggressive riding styles, including enduro and light trail riding.

4. **Compatibility with Advanced Systems**: The XX1 Eagle is part of SRAM s high-end drivetrain ecosystem, which includes compatible shifters, derailleurs, and cassettes. This ensures seamless integration and optimal performance if you re already using or plan to use other XX1 components.

5. **Aesthetic Appeal**: The carbon construction and sleek design give the crank arm a premium look, which may appeal to riders who value both performance and aesthetics.

6. **Reduced Maintenance**: With fewer moving parts (single chainring) and a simplified drivetrain, maintenance requirements are lower compared to double-chainring setups. This can save time and effort in the long run.

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1. **High Cost**: Carbon fiber and high-performance drivetrain components like the XX1 Eagle are expensive. The crank arm alone is a significant investment, and if you re not already part of the SRAM ecosystem, you may need to purchase additional compatible parts (e.g., shifters, derailleurs, cassette), further increasing costs.

2. **Limited Gear Range**: While the Eagle cassette offers a wide range of ratios, the single-ring setup means you re limited to the gearing provided by the cassette. If you frequently ride in terrain that requires a broader range (e.g., extreme climbs or descents), you might find the setup less versatile than a double-chainring system.

3. **Compatibility Issues**: If your bike is not already equipped with a compatible bottom bracket (e.g., SRAM s Hollowtech II or a press-fit standard), you may need to upgrade your bottom bracket as well. This adds to the cost and complexity of the installation.

4. **Learning Curve**: Shifting on a single-ring setup can feel unfamiliar to riders used to double-chainring bikes. While the XX1 Eagle is designed for smooth operation, it may take some time to adjust to the shifting feel and gear selection.

5. **Potential for Higher Wear**: Single-ring setups can sometimes experience higher chain wear due to the constant bending of the chain around the single chainring. While this is mitigated by the quality of the Eagle chain, it s still a consideration for riders who prioritize longevity.

6. **Resale Value**: High-end components like this crank arm may not retain their value as well as universal or more widely compatible parts. If you decide to upgrade or sell your bike in the future, the resale value of the XX1 Eagle setup might not be as strong as other drivetrain options.

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The SRAM FC-XX1-ASSY-C2 XX1 Eagle Carbon Dub SL crank arm is an excellent choice for riders who prioritize performance, efficiency, and lightweight construction. It is particularly well-suited for cross-country, trail, and enduro riders who demand smooth shifting, precise gearing, and a responsive ride. The carbon construction and integration with the Dub SL bottom bracket make it a stiff and durable option for aggressive riding styles.

However, the high cost, potential compatibility issues, and learning curve associated with single-ring setups may not be ideal for everyone. Riders on a budget, those who prefer double-chainring setups, or those who frequently ride in extreme terrain might find other options more suitable.

If you re already invested in the SRAM XX1 Eagle ecosystem or are looking to upgrade your drivetrain for better performance, this crank arm is a strong choice. For casual riders or those who prefer a more versatile or cost-effective setup, it may not be the best fit.

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- You are already using or plan to use the SRAM XX1 Eagle drivetrain system.

- You prioritize weight savings, efficiency, and performance in cross-country, trail, or enduro riding.

- You are willing to invest in a high-end drivetrain and are comfortable with the associated costs.

- Your bike s bottom bracket is compatible with the Dub SL design or you are prepared to upgrade it.

- You are on a tight budget and cannot justify the cost of a high-end single-ring setup.

- You prefer the versatility of a double-chainring drivetrain for a wider range of riding conditions.

- You are new to single-ring systems and are unsure about the learning curve or shifting feel.

- You plan to ride in extreme terrain where a double-chainring might offer more flexibility.

Details:

NOTE: Includes crank boots and mounting hardware, does not include chaining. Bottom Bracket Compatibility: DUB SL. length : 175mm. Model: x1 Eagle Carbon FC-x1-ASSY-C2.

part #: fcxx1assyc2 price

• $422.90

specifications ribicycl:

• brand: Sram
• mpn: Fc-xx1-assy-c2
• model: Xx1 Eagle Fc-xx1-assy-c2
• part type: Bike Crank Mount
• compatible brand: For Sram
• crankarm length: 175 Mm
• color: Black
• bottom bracket shell type: Dub Sl
• compatible bike type: Hardtail Bike, Mountain Bike
• material: Carbon
• set includes: Crankset
• number of speeds: 12
• country of origin: Taiwan

seller ribicycl:

• rating: 100.0%
• city: Boulder, Colorado
• # reviews: 21237

payments ribicycl:

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

returns ribicycl:

• policy: Returns Accepted
• method: Money back
• paid by: Buyer
• time: 30 Days

shipping ribicycl:

• carrier: USPS
• cost: $9.95
• class: Standard
• type: Fixed
• transit: 3-7 Days
• service: USPS Ground Advantage

offer ribicycl:

• availability: In Stock
• sold: 0
• quantity: 1
• started: April 29, 2026
• options: Ship-to-home

general ribicycl:

• Cycling > Bicycle Components Parts > Cranksets
• condition: Used

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