1. Bicycle Rims For Sale
  2. sku: 18090126713263813
  3. FSA CK-6021-80

FSA CK-6021-80 Light Carbon Crankset Single Chainring Sl BB30 170MM

Ck-6021-80 Fsa Sl-k Light Carbon Bb30 Crankset 170mm Single No Chainring Black

( Brand: Fsa ), ( Manufacturer Part Number: CK-6021-80 ), ( Part Type: Light ), ( Compatible Brand: For Fsa ), ( Color: Black, Red, White ), ( Bottom Bracket Shell Type: Bb30 ), ( Material: Carbon ), ( Set Includes: Crankset ), ( Item Length: 170 Mm ), ( Number Of Speeds: 1 Speed ), ( Compatible Bike Type: Road Bike ), ( Number Of Chainrings: Single ), ( Item Weight: Less Than 10 Lb )

Review FSA Sl k Light Carbon Bb30 Crankset 170mm Single No Chainring Black

The **FSA CK-6021-80 SL-K Light Carbon BB30 Crankset** is a premium, performance-oriented drivetrain designed for cyclists seeking a seamless blend of efficiency, durability, and cutting-edge engineering. Engineered with **FSA s signature SL-K carbon construction**, this crankset delivers an ultra-lightweight yet rigid platform, ensuring optimal power transfer from pedal to wheel with minimal energy loss. The **BB30 bottom bracket standard** a modern, compact design enables a lower bottom bracket shell height, reducing chainline friction and improving overall drivetrain efficiency, particularly in single-ring setups where chain alignment is critical. With a **170mm BCD (bolt circle diameter)**, the single chainring is optimized for a wide range of riding styles, from aggressive climbing to smooth cruising, offering a balanced gearing solution that minimizes derailleur wear and maximizes chain engagement.

Crafted from **high-modulus carbon fiber**, the crankset s arms and spider are meticulously layered to achieve an exceptional strength-to-weight ratio, making it an ideal choice for competitive riders and endurance seekers who demand both performance and reliability. The **BB30 bottom bracket** integrates seamlessly with compatible frames and forks, providing a secure, vibration-dampening interface that enhances comfort while maintaining precision. The **single chainring configuration** eliminates the need for a derailleur, simplifying the drivetrain and reducing maintenance perfect for gravel, cyclocross, or fixed-gear applications where simplicity and efficiency are paramount. Additionally, the crankset s **smooth, aerodynamic profile** minimizes air resistance, contributing to a more efficient ride at higher speeds.

FSA s attention to detail extends to the **precision-machined components**, including the **6021 aluminum spider** (for added durability) and the **high-quality bearings** that ensure smooth, long-lasting operation with minimal maintenance. The **compatibility with a wide range of chainline options** makes this crankset versatile for various frame geometries, while the **lightweight design** (typically under 200 grams) ensures it doesn t weigh you down during demanding rides. Whether paired with a lightweight road bike, a rugged gravel rig, or a performance-oriented cyclocross machine, the **FSA CK-6021-80 SL-K Light Carbon BB30 Crankset** stands as a testament to FSA s commitment to innovation, performance, and rider-centric design. Built to withstand the rigors of intense training and competition, this crankset is a standout choice for cyclists who refuse to compromise on quality or efficiency.

The **FSA CK-6021-80 SL-K Light Carbon BB30 Crankset** with a **170mm single chainring** is a popular choice among cyclists, particularly those riding in the gravel, cyclocross, or lightweight road categories. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Lightweight Construction**

The crankset is made from **carbon fiber**, which significantly reduces weight compared to steel or aluminum alternatives. This makes it ideal for climbers or riders who prioritize efficiency and speed, as less weight translates to easier pedaling and better acceleration.

2. **BB30 Bottom Bracket Standard**

The BB30 standard is known for its **compact design and high stiffness**, which improves power transfer and reduces rotational mass. This is particularly beneficial for riders who demand precision and responsiveness, such as those in gravel or cyclocross disciplines. The BB30 also allows for a lower bottom bracket height, which can improve pedal clearance in rough terrain.

3. **170mm Chainring**

A **170mm chainring** is a versatile size for gravel, cyclocross, and lightweight road riding. It offers a good balance between climbing efficiency and descending stability. The smaller size compared to a standard road chainring (e.g., 50-52T) makes it easier to pedal in tight gearing situations, which is useful on steep climbs or when riding in rough conditions where shifting may be less precise.

4. **Compatibility with a Wide Range of Drivetrains**

The crankset is compatible with **1x drivetrains**, which are popular in gravel and cyclocross due to their simplicity and reliability. It pairs well with modern single-ring setups from brands like **Shimano (Deore, SLX, XT, etc.), SRAM (NX, GX, etc.), and Enve**. This makes it an easy upgrade or replacement for riders already running a 1x system.

5. **Durability and Strength**

While carbon is lightweight, FSA s SL-K series is designed with **high-quality materials and construction techniques** to ensure durability. The crankset is robust enough for gravel riding, where impacts and rough terrain are common, though it may not be as indestructible as steel or titanium alternatives.

6. **Aesthetic Appeal**

The carbon crankset has a **sleek, modern look** that appeals to riders who value both performance and style. The black or dark finish is also less prone to showing dirt compared to lighter colors.

7. **Easy Installation and Adjustment**

FSA cranksets are generally straightforward to install, especially with the right tools. The BB30 standard also simplifies bottom bracket installation, as it uses a **press-fit design** that eliminates the need for traditional spindle-based bottom brackets.

8. **Cost-Effective Carbon Option**

Compared to some high-end carbon cranksets (e.g., from Campagnolo or ultra-premium brands), the FSA CK-6021-80 is **more affordable**, making it a great entry point into carbon cranks without sacrificing too much performance.

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### **Cons**

1. **Limited Chainring Size Options**

The crankset comes with a **fixed 170mm chainring**, which may not suit all riding styles. Riders who frequently tackle very steep climbs or need a larger chainring for better descending control might prefer a slightly larger size (e.g., 175mm or 180mm). However, 170mm is a solid all-around choice for most gravel and cyclocross setups.

2. **Potential for Higher Maintenance**

Carbon components can be **more sensitive to impacts and abrasion** than steel or aluminum. While the SL-K series is durable, rough riding (e.g., hitting rocks or curbs) could potentially cause micro-fractures or delamination over time. Regular inspection is recommended to catch any issues early.

3. **Compatibility with Older Bikes**

The BB30 standard is **not universal**. If your bike has a **standard square taper or press-fit 24mm bottom bracket**, you ll need to either upgrade your bike or use an adapter (though adapters for BB30 are rare and may not be ideal for all setups). This could add cost and complexity if your current bike isn t BB30-compatible.

4. **Weight Sensitivity in Some Disciplines**

While the lightweight nature of carbon is an advantage for most riders, in **time trial or triathlon disciplines**, where aerodynamics are critical, the added weight of a carbon crankset might be less significant than other components (e.g., wheels or frame). For these disciplines, riders often prioritize other parts of the drivetrain.

5. **Limited Aftermarket Support**

Compared to steel or aluminum cranks, carbon cranksets have **fewer aftermarket parts** available (e.g., chainring replacements, bolt-on upgrades). If you ever need to replace the chainring or modify the crankset, options may be more limited.

6. **Potential for Higher Initial Cost**

While the FSA CK-6021-80 is more affordable than some carbon cranksets, it is still **more expensive than aluminum or steel alternatives**. For riders on a tight budget, this could be a significant investment, especially if paired with other high-end components.

7. **No Adjustable Bottom Bracket Height**

The BB30 standard fixes the bottom bracket height, which may not be ideal for riders who prefer a slightly higher or lower position for comfort or clearance. Adjustability is only possible by changing the frame or using a different bottom bracket standard.

8. **Potential for Resale Value Decline**

Carbon components, especially those from mid-range brands, may **depreciate faster** than steel or titanium parts. If you plan to sell the bike in the future, the resale value might not retain as well as more durable materials.

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### **Conclusion**

The **FSA CK-6021-80 SL-K Light Carbon BB30 Crankset with a 170mm chainring** is an excellent choice for riders who prioritize **lightweight performance, stiffness, and compatibility with modern 1x drivetrains**. It excels in **gravel, cyclocross, and lightweight road riding**, where its carbon construction and BB30 standard provide a noticeable advantage in power transfer and efficiency. The 170mm chainring strikes a good balance for most riders, offering versatility without being too large or too small.

However, it is not without drawbacks. The **fixed chainring size, potential maintenance sensitivity, and compatibility limitations** (especially with non-BB30 bikes) are worth considering. Additionally, while durable, carbon is not indestructible, and rough riding could pose risks over time.

For riders who are **already running a BB30 bottom bracket, a 1x drivetrain, and prioritize weight savings**, this crankset is a **strong, cost-effective upgrade**. It is particularly well-suited for **gravel and cyclocross riders** who need a balance of climbing efficiency and durability. Riders in **time trial or triathlon disciplines** may find other components more impactful, while those on a tight budget might prefer aluminum or steel alternatives.

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### **Recommendation**

**Buy the FSA CK-6021-80 SL-K Light Carbon BB30 Crankset if:**

- You ride **gravel, cyclocross, or lightweight road** and want a **stiff, lightweight crankset** for better power transfer.

- Your bike already has a **BB30 bottom bracket**, or you are willing to upgrade your bike to accommodate it.

- You are running a **1x drivetrain** and want a **versatile 170mm chainring** that works well for climbing and descending.

- You value **carbon s strength-to-weight ratio** and are willing to handle it with care.

- You want a **mid-range carbon crankset** that offers good performance without the premium price of ultra-high-end options.

**Consider alternatives if:**

- You ride **heavily on rough terrain** and are concerned about carbon s durability (in which case, a **steel or titanium crankset** might be more suitable).

- Your bike is **not BB30-compatible**, and you are unwilling to upgrade (though adapters exist, they may not be ideal).

- You prioritize **resale value or long-term durability** over weight savings (in which case, aluminum or steel cranks could be more practical).

- You ride **time trial or triathlon** and are more focused on aerodynamics and other high-performance components.

**Final Verdict:**

The FSA CK-6021-80 is a **highly capable crankset** that delivers strong performance for its price point, making it a **solid recommendation for gravel and cyclocross riders** who want to upgrade their drivetrain. If your setup aligns with its strengths (BB30, 1x, lightweight riding), it will likely be a worthwhile investment. However, weigh the trade-offs carefully if you expect to ride in extremely rough conditions or if your bike s compatibility is uncertain.

Details:

What you see is what get. I do not know anything about this item.

part #: ck602180 price

  • $34.99

specifications ribicycl:

  • brand: Fsa
  • mpn: Ck-6021-80
  • part type: Light
  • compatible brand: For Fsa
  • color: Black, Red, White
  • bottom bracket shell type: Bb30
  • material: Carbon
  • set includes: Crankset
  • item length: 170 Mm
  • number of speeds: 1 Speed
  • compatible bike type: Road Bike
  • number of chainrings: Single
  • item weight: Less Than 10 Lb

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general ribicycl:

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

shipping ribicycl:

  • service: USPS Ground Advantage
  • type: Calculated
  • carrier: USPS
  • class: Standard
  • transit: 4-9 Days
  • cost: $10.15

offer ribicycl:

  • started: May 26, 2026
  • quantity: 1
  • best offers: True
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock

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  • policy: No Returns

seller ribicycl:

  • city: New Albany, Indiana
  • # reviews: 60
  • rating: 100.0%
part type: light, compatible brand: for fsa, bottom bracket shell type: bb30, set includes: crankset, item length: 170 mm, number of speeds: 1 speed, compatible bike type: road bike, number of chainrings: single, item weight: less than 10 lb,
category: sporting goods > cycling > bicycle components parts > cranksets, color: black red white, material: carbon, sku: 18090126713263813,
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1 offer $34.99 USD
  • Used. Offer #1 priced at $34.99 + $10.15 shipping estimate = $45.14* total. What you see is what you get. I do not know anything about this item.+$10.15 shipping

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