SRAM Sync Chainring Bcd 006218014002 40T 107 4-BOLT

( Brand: Sram ), ( Part Type: Bcd ), ( Compatible Brand: For Sram ), ( Number Of Teeth: 40 Tooth ), ( Distance Between Bolt Holes: 107 Bcd ), ( Item Diameter: 107 Mm ), ( Compatible Bike Type: Cyclocross Bike, Gravel Bike, Racing Bike, Road Bike ), ( Set Includes: Chainring Bolt ), ( Material: Aluminum ), ( Mounting Type: 4-arm ), ( UPC: 006218014002 )

Review SRAM X sync 40t Chainring 107 Bcd 4-bolt

The **SRAM X-Sync 40T Chainring (Part #006218014002)** is a precision-engineered component designed to deliver seamless performance and durability for modern road and gravel bicycles equipped with a 107mm BCD (bolt circle diameter) crankset. Crafted from high-grade aluminum alloy, this chainring features SRAM s signature **X-Sync** technology, which ensures a smooth, synchronized chain engagement across the entire drivetrain. The **4-bolt pattern** provides a secure and rigid mounting interface, minimizing flex and maximizing power transfer from pedal to wheel, making it an ideal choice for riders seeking both efficiency and reliability. With a **40-tooth profile**, this chainring is optimized for climbing efficiency, offering a lower gear ratio that enhances acceleration on steep inclines while maintaining versatility for varied terrain. The **107 BCD standard** ensures compatibility with a wide range of SRAM and third-party cranksets, including popular models like the **Force, Rival, and NX series**, making it a versatile upgrade for cyclists looking to refine their gearing strategy. Whether paired with a compact or standard crankset, this chainring s aerodynamic design and optimized tooth shape reduce chain slap and improve overall drivetrain performance, contributing to a more responsive and enjoyable riding experience. Built to withstand the demands of frequent use, the X-Sync chainring is engineered for longevity, ensuring consistent performance over thousands of miles. Perfect for road cyclists, commuters, and gravel enthusiasts who demand precision and reliability, this component exemplifies SRAM s commitment to innovation and rider-centric engineering.

The SRAM XX-Sync 40T chainring (part number 006218014002, 107 BCD, 4-bolt) is a high-end component designed for gravel, cyclocross, and endurance road bikes. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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1. **Durability and Reliability**: The XX-Sync series is built for rough conditions, featuring a hardened steel construction that resists wear and bending. This makes it ideal for gravel, dirt, and mixed-surface riding where chainrings can be subjected to impacts or debris.

2. **Optimized for Wide-Range Drivetrains**: The 40T size is designed to complement SRAM s XX1 or XX eTap drivetrains, which often include a 30T or 32T smallest cog. This setup maximizes gearing efficiency for climbing and rolling, reducing the need for excessive shifting or chain rub.

3. **Lightweight**: SRAM s XX-Sync chainrings are engineered to be as light as possible without compromising strength. The 40T version is particularly well-suited for riders prioritizing weight savings in the front end.

4. **Compatibility with SRAM Systems**: If you re already running an SRAM XX1 or XX eTap drivetrain, this chainring integrates seamlessly with the rest of the components, ensuring smooth shifting and reduced maintenance needs.

5. **Versatility for Endurance and Gravel**: The 40T chainring is a popular choice for riders who want a balance between climbing efficiency and rolling speed. It s less aggressive than a 34T or 36T but more practical than a 42T or 44T for long-distance or mixed-terrain riding.

6. **High-Quality Bearings**: SRAM uses precision bearings in their chainrings, which reduce friction and improve durability, especially in demanding conditions.

7. **Aesthetic and Brand Prestige**: As part of SRAM s XX-Sync line, this chainring carries the brand s reputation for performance and innovation, appealing to riders who value both function and form.

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1. **Cost**: The XX-Sync chainring is expensive, especially when compared to mid-range or entry-level alternatives from SRAM or other brands. For casual riders or those on a budget, the price may not justify the performance gains.

2. **Overkill for Road Cycling**: If you primarily ride smooth pavement or competitive road racing, a 40T chainring may feel too large, leading to excessive chain rub or an overly aggressive gearing ratio. In such cases, a smaller chainring (e.g., 30T or 32T) would be more practical.

3. **Limited Availability of Spare Parts**: While SRAM s XX-Sync components are durable, finding replacement parts or aftermarket upgrades (e.g., chainring bolts or spacers) can be more difficult compared to more widely used chainrings like Shimano s HG or SRAM s NX/SX lines.

4. **Potential for Chain Wear**: A larger chainring (like the 40T) can accelerate chain wear, especially if paired with a smaller cassette (e.g., 10-42T). This may require more frequent chain and cassette replacements, adding to long-term costs.

5. **Weight Sensitivity Trade-Off**: While the XX-Sync chainring is lightweight, the overall weight savings may be negligible for some riders, particularly if the rest of the drivetrain is already optimized for performance.

6. **Compatibility Issues with Non-SRAM Systems**: If you re not using an SRAM drivetrain, the XX-Sync chainring may not integrate as smoothly with other brands components, potentially leading to shifting inconsistencies or increased maintenance.

7. **Durability Concerns in Extreme Conditions**: While the XX-Sync is robust, extreme off-road conditions (e.g., heavy rocks, deep mud, or aggressive trail riding) could still stress the chainring over time, potentially leading to bending or damage.

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The SRAM XX-Sync 40T chainring is an excellent choice for riders who prioritize durability, efficiency, and compatibility with SRAM s high-end drivetrains. It excels in gravel, cyclocross, and endurance riding, where its size and build quality provide a significant advantage. However, its high cost and potential overkill for road-focused riders or those on a budget are notable drawbacks. Additionally, the chainring s size may not suit every rider s preferences, particularly those who prefer a more aggressive climbing setup or smoother pavement riding.

If you re already invested in an SRAM XX1 or XX eTap system and ride mixed or rough terrain, this chainring is a strong recommendation. For road-focused riders or those seeking a more budget-friendly option, alternatives like SRAM s Force or NX chainrings or Shimano s road-specific chainrings may be more appropriate.

- You ride gravel, cyclocross, or endurance road frequently and prioritize durability and efficiency.

- You re already using an SRAM XX1 or XX eTap drivetrain and want full compatibility.

- You value lightweight components and are willing to invest in high-performance gear.

- You primarily ride smooth pavement or competitive road racing, where a smaller chainring (e.g., 30T or 32T) would be more practical.

- Your budget is limited, and you can achieve similar performance with a more affordable chainring from SRAM s mid-range lineup or another brand.

- You re unsure about the chainring s size and may prefer the flexibility of a modular setup (e.g., a chainring adapter or interchangeable chainrings).

Details:

It has been lightly used for 4-5 cyclocross races. This is a SRAM X-sync, 40 tooth, 107 BCD 4-bolt chainring.

part #: 006218014002 prices

• $86.01-$106.36

specifications ribicycl:

• brand: Sram
• part type: Bcd
• compatible brand: For Sram
• number of teeth: 40 Tooth
• distance between bolt holes: 107 Bcd
• item diameter: 107 Mm
• compatible bike type: Cyclocross Bike, Gravel Bike, Racing Bike, Road Bike
• set includes: Chainring Bolt
• material: Aluminum
• mounting type: 4-arm
• upc: 006218014002

seller ribicycl:

• rating: 100.0%
• # reviews: 295
• city: Rochester, New York

returns ribicycl:

• policy: No Returns

offer ribicycl:

• sold: 0
• availability: In Stock
• options: Ship-to-home
• quantity: 1
• best offers: True
• started: March 6, 2026

payments ribicycl:

• credit card: Diners-club
• wallet: Google-pay
• other

general ribicycl:

• Cycling > Bicycle Components Parts > Chainrings BMX Sprockets
• condition: Used

shipping ribicycl:

• cost: $8.10
• class: Standard
• service: USPS Ground Advantage
• transit: 5-11 Days
• type: Calculated
• carrier: USPS

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