1. Bicycle Rims For Sale
  2. sku: 17767682218115853
  3. FSA 840031051752

FSA Light Carbon Crankset 0840031051752 Sl

Fsa 840031051752 Sl-k Light Carbon Crankset - Black 175 L

( Brand: Fsa ), ( Part Type: Light ), ( Compatible Brand: For Fsa ), ( Color: Black ), ( Bottom Bracket Shell Type: 386evo ), ( Set Includes: Crankset ), ( Material: Carbon ), ( Item Length: 174 Mm ), ( Crankarm Length: 175 Mm ), ( Compatible Bike Type: Road Bike, Universal, Hybrid Bike, Gravel Bike, Cyclocross Bike, Racing Bike, Fitness-/crossbike ), ( Number Of Chainrings: Double ), ( Item Weight: 1.43 Lb ), ( UPC: 840031051752 )

Review FSA Sl k Light Carbon Crankset Black 175

The **FSA SL-K Light Carbon Crankset (Model FSA 840031051752)** represents the pinnacle of modern bicycle crankset engineering, meticulously crafted for performance-oriented cyclists seeking an ultra-lightweight yet robust solution for their high-end road or gravel rigs. Engineered from **high-modulus carbon fiber**, this crankset delivers an exceptional strength-to-weight ratio, ensuring minimal rotational mass while maintaining structural integrity under the most demanding riding conditions. The **SL-K** designation underscores its precision-machined design, optimized for efficiency and power transfer, making it an ideal choice for competitive riders, endurance athletes, and discerning enthusiasts who demand nothing less than excellence. The **175mm Q-factor** strikes a balance between stability and agility, allowing for a natural pedaling position that enhances pedal stroke efficiency and reduces fatigue over long distances. The crankset s **smooth, buttery-smooth bearing system** likely featuring sealed cartridge or ceramic bearings minimizes friction and ensures consistent, reliable performance, even under heavy workloads. Its **compatibility with 110mm and 135mm bottom bracket shells** (depending on the specific model variant) provides versatility for a wide range of frame and fork setups, while the **FSA s signature attention to detail** in the crank arm design including optimized chainline alignment and aerodynamic contours reduces drag and enhances overall efficiency. Whether tackling grueling climbs, sprinting for the finish line, or cruising on mixed-terrain gravel rides, this crankset s **superior material composition and refined engineering** ensure it remains a steadfast partner in delivering power with precision and minimizing unnecessary weight. Built to elevate performance without compromise, the **FSA SL-K Light Carbon Crankset** is a testament to FSA s commitment to innovation, quality, and the relentless pursuit of cycling excellence.

The **FSA 840031051752 SL-K Light Carbon Crankset** is a mid-range, entry-level carbon crankset designed for road and gravel cycling. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Lightweight Construction**

- Made from carbon fiber, this crankset is significantly lighter than aluminum alternatives, reducing rotational mass and improving pedal efficiency. This is particularly beneficial for climbers and those seeking a smoother ride.

2. **Affordable Carbon Option**

- Unlike high-end carbon cranksets (e.g., FSA Omega or Shimano Dura-Ace), this model offers carbon at a more accessible price point, making it a practical choice for riders who want carbon benefits without the premium cost.

3. **Durability for the Price**

- While not as robust as high-end cranksets, the SL-K series is designed to handle moderate use, including road riding, light gravel, and commuting. The carbon construction is less prone to fatigue compared to aluminum in similar weight classes.

4. **Compatibility with Common Bottom Brackets**

- The crankset uses a **BB86** bottom bracket standard (with a 68mm shell), which is compatible with many modern road and gravel frames. This makes it a versatile choice for riders upgrading or replacing a crankset without needing a full frame change.

5. **Smooth Pedaling Feel**

- Carbon crankarms absorb minor road vibrations better than aluminum, providing a slightly smoother pedal stroke. This can enhance comfort, especially on rough surfaces.

6. **Aesthetic Appeal**

- The matte black carbon finish gives the crankset a premium look, which may appeal to riders who value appearance as well as performance.

7. **Warranty and Brand Support**

- FSA (now part of **SRAM**) offers a standard warranty (typically 2 years), and the brand has a reputation for decent customer support, though this may vary by region.

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### **Cons**

1. **Limited Performance Compared to Higher-End Models**

- The SL-K is not as stiff or high-performance as FSA s **Omega** or **Omega SL** cranksets. Riders seeking maximum power transfer (e.g., time trialists or competitive racers) may find it underwhelming.

- The carbon used is likely a lower-grade composite, which may not handle extreme loads or abuse as well as premium carbon.

2. **Durability Concerns Under Heavy Use**

- While carbon is strong, it is not indestructible. This crankset is not designed for aggressive riding, off-road use, or frequent crashes. Over time, carbon can delaminate or crack under stress, especially if the frame or bottom bracket is not properly aligned.

- The **BB86** standard, while common, is not as widely supported as **BB30** or **Octalink**, which may limit future upgrade options if the frame is not compatible.

3. **Maintenance Sensitivity**

- Carbon cranksets can be more sensitive to cleaning and maintenance. Harsh chemicals or abrasive cleaning tools can damage the carbon fiber, whereas aluminum cranksets are more forgiving.

- The **SL-K** may not have the same level of precision machining as higher-end cranksets, which could lead to slight wobble or uneven wear over time.

4. **Limited Availability of Spare Parts**

- As a mid-range model, replacement crankarms or components may not be as readily available as those for premium cranksets. This could be a drawback if a part fails and needs immediate replacement.

5. **Not Ideal for Extreme Conditions**

- The crankset is not designed for **gravel racing, cyclocross, or mountain biking**. The carbon construction is not as robust as aluminum in these disciplines, where impacts and side loads are more common.

6. **Potential for Resale Depreciation**

- Like many mid-range components, the SL-K may not hold its value well over time. High-end carbon cranksets (e.g., FSA Omega) retain value better, while this model may depreciate faster.

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### **Conclusion**

The **FSA SL-K Light Carbon Crankset** is a **solid mid-range option** for riders who want the benefits of carbon (lightweight, smooth feel) without the cost of a premium crankset. It is best suited for:

- **Road cyclists** looking to upgrade from aluminum or steel cranksets.

- **Commuters or recreational riders** who prioritize comfort and aesthetics.

- **Budget-conscious climbers** who want a lighter crankset for efficiency without extreme performance demands.

However, it is **not ideal** for:

- **Aggressive or off-road riding** (gravel, cyclocross, MTB).

- **Racers or time trialists** seeking maximum stiffness and power transfer.

- **Riders who frequently crash or subject their bike to heavy abuse**.

If you are upgrading from a heavier crankset (e.g., aluminum) and want a noticeable weight reduction without spending hundreds of dollars, this is a **good choice**. But if you plan to push your bike hard or want the best possible performance, investing in a higher-tier crankset (e.g., FSA Omega, Shimano Dura-Ace, or SRAM Force) would be more justified.

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### **Recommendation**

**Buy the FSA SL-K Light Carbon Crankset if:**

- You are on a budget but want carbon s benefits.

- You ride mostly on paved roads and prioritize comfort and weight savings.

- Your frame is BB86-compatible, and you plan to keep the bike for moderate use.

**Avoid the FSA SL-K Light Carbon Crankset if:**

- You ride gravel, cyclocross, or mountain biking regularly.

- You are a competitive racer or need maximum stiffness.

- You expect to abuse the bike (e.g., frequent crashes, heavy loads).

- You can afford a higher-end crankset (e.g., FSA Omega, Shimano Dura-Ace) for better durability and performance.

**Alternative Considerations:**

- **Budget Option:** **Shimano Sora** or **SRAM Apex** (aluminum but more durable).

- **Mid-Range Upgrade:** **FSA Omega** (stiffer, better carbon) or **Shimano 105** (aluminum but high-quality).

- **Premium Choice:** **FSA Omega SL** or **Shimano Dura-Ace** for maximum performance.

If the SL-K fits your riding style and budget, it is a **practical and lightweight upgrade**. Otherwise, consider a more durable or high-performance alternative.

Details:

Carbon crankset compatible with most road bikes. Used on a Specialized Tarmac w Shaman Ultra 11 speed.

specifications ribicycl:

  • brand: Fsa
  • part type: Light
  • compatible brand: For Fsa
  • color: Black
  • bottom bracket shell type: 386evo
  • set includes: Crankset
  • material: Carbon
  • item length: 174 Mm
  • crankarm length: 175 Mm
  • compatible bike type: Road Bike, Universal, Hybrid Bike, Gravel Bike, Cyclocross Bike, Racing Bike, Fitness-/crossbike
  • number of chainrings: Double
  • item weight: 1.43 Lb
  • upc: 840031051752

payments ribicycl:

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

returns ribicycl:

  • policy: No Returns

seller ribicycl:

  • city: Williamsburg, Virginia
  • # reviews: 2
  • rating: 0.0%

offer ribicycl:

  • quantity: 1
  • availability: In Stock
  • started: May 2, 2026
  • options: Ship-to-home
  • sold: 0
  • best offers: True

general ribicycl:

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

shipping ribicycl:

  • class: Standard
  • carrier: USPS
  • cost: $7.15
  • type: Fixed
  • service: USPS Ground Advantage
  • transit: 4-9 Days
part type: light, compatible brand: for fsa, bottom bracket shell type: 386evo, set includes: crankset, item length: 174 mm, crankarm length: 175 mm, compatible bike type: road bike, universal, hybrid bike, gravel bike, cyclocross bike, racing bike, fitness-/crossbike, number of chainrings: double, item weight: 1.43 lb,
category: sporting goods > cycling > bicycle components parts > cranksets, color: black, material: carbon, sku: 17767682218115853,
Fsa 840031051752 Is Similar To:
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4 offers $80.00–$199.97 USD
  • New. Offer #1 priced at $199.97 + $0.00 shipping estimate = $199.97* total. Hollow carbon arms with UD carbon finish. Forged AL7050 BB386EVO spindle.FREE SHIPPING
  • Used. Offer #2 priced at $80.00 + $10.15 shipping estimate = $90.15* total. The crankset is in good condition, some teeth are worn but the carbon components are fully intact and very light.+$10.15 shipping
  • New. Offer #3 priced at $180.00 + $11.53 shipping estimate = $191.53* total. Combine it with a 42t+ cassette and you'll have a wider than eagle range drivetrain! The FSA SL-K BB386EVO Carbon Crankset is a high-performance component designed for road, gravel, cyclocross, racing, and fitness bikes.+$11.53 shipping
  • Used. Offer #4 priced at $97.00 + $7.15 shipping estimate = $104.15* total. Used on a Specialized Tarmac w Shimano Ultegra (11 speed).+$7.15 shipping

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