SHIMANO FC-R5800 Crankset 105 50/34 172.5MM

( Brand: Shimano ), ( Manufacturer Part Number: FC-R5800 ), ( Model: SHIMANO 105 FC-R5800 ), ( Set Includes: Crankset ), ( Crankarm Length: 172.5 Mm ), ( Compatible Brand: For Shimano ), ( Number Of Chainrings: Double ), ( Number Of Speeds: 11 Speed ), ( Part Type: Crankset With Chainring )

Review SHIMANO 105 Crankset 50/34 172.5mm

The **Shimano FC-R5800 105 Crankset (50/34 Chainring, 172.5mm BCD)** is a refined yet capable entry into Shimano s 105 lineup, offering a compelling blend of performance, durability, and value for riders seeking a reliable, mid-range drivetrain. Engineered with Shimano s signature precision and engineering expertise, this crankset delivers a smooth, efficient power transfer while maintaining the hallmark reliability of the 105 brand. The **50/34 chainring combination** is a versatile setup, ideal for a wide range of riding styles, from spirited climbs to efficient road riding. The **50-tooth large chainring** provides a strong, low-effort gear for cruising and descending, while the **34-tooth small chainring** ensures a punchy, high-speed option for surging up steep grades or tackling headwinds, making it a practical choice for both commuters and weekend warriors. The **172.5mm BCD (bolt circle diameter)** ensures compatibility with a broad selection of road and gravel frames, allowing riders to pair it with their existing wheels or upgrade their setup without compatibility concerns.

Crafted from **high-grade aluminum**, the crankset features a **lightweight yet robust design**, balancing performance with durability. The **spindle is precision-machined** to minimize friction and wear, while the **integrated bottom bracket** (compatible with standard 68mm or 73mm shell widths, depending on the model) ensures a tight, secure fit that reduces play and enhances efficiency. The **5-bolt spider** design provides a sturdy foundation for the chainrings, while the **smooth, polished surfaces** of the crank arms reduce drag and improve aerodynamics. Shimano s **Hollowtech II** bottom bracket bearings are included, delivering a **low-friction, long-lasting** rotation that keeps shifting smooth and responsive, even under heavy workloads. This crankset is particularly well-suited for riders who demand a **high-quality drivetrain without the premium price tag** of higher-tier 105 models, making it an excellent choice for those upgrading from entry-level setups or those who want a reliable, performance-oriented crankset for their next bike.

Beyond its technical specifications, the **FC-R5800 105 crankset** embodies Shimano s commitment to **consistency and ease of use**. The **shimano-specific chainline** ensures optimal chain engagement, reducing the risk of derailment and improving shifting performance when paired with a compatible 105 groupset. The **durable, anodized finish** resists corrosion, making it ideal for riders who tackle varied conditions, from wet urban commutes to dusty gravel paths. Whether paired with a **carbon or aluminum frame**, this crankset integrates seamlessly, offering a **smooth, confident ride** that complements the rest of the drivetrain. For those looking to **upgrade their gearing without breaking the bank**, the **FC-R5800 105 crankset** delivers a **proven, high-performance solution** that stands out in Shimano s mid-range offerings, proving that reliability and efficiency don t have to come at the expense of affordability.

The **Shimano FC-R5800 105 Crankset (50/34T, 172.5mm BCD)** is a mid-range road crankset that offers a balance of performance, durability, and value. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Performance-Oriented Ratios**

The 50/34T chainring combination is ideal for climbers and all-rounders. The 50T provides a strong climbing gear (especially with a 11-32 cassette), while the 34T offers a compact option for faster riding on flat sections or descents. This setup is more versatile than a standard 52/36T or 53/39T, making it suitable for a wide range of riding styles, including endurance and time-trialing.

2. **Lightweight Construction**

The FC-R5800 is part of Shimano s 105 lineup, which prioritizes weight savings without sacrificing durability. The crankset uses a hollow crank arm design with a forged steel spider, keeping the weight lower than entry-level options (e.g., Tiagra) while still being robust. The overall weight is competitive with higher-end groupsets like Ultegra or Dura-Ace, though not as light as carbon cranks.

3. **Compatibility and Reliability**

The 172.5mm BCD (bolt circle diameter) is the standard for most road bikes, ensuring broad compatibility with frames, bottom brackets, and other components. Shimano s 105 is known for its reliability, with fewer issues compared to lower-tier groupsets. The FC-R5800 is built to last, with durable bearings and a smooth shifting experience when paired with a compatible derailleur (e.g., 105 RD-R5800 or higher).

4. **Value for Money**

The FC-R5800 sits in the mid-range of Shimano s 105 lineup, offering a sweet spot between performance and cost. It s more affordable than Ultegra or Dura-Ace cranks while still providing significant upgrades over Tiagra or entry-level 105 models (e.g., FC-R3080). For riders who want a step up in performance without breaking the bank, this crankset delivers excellent value.

5. **Durability**

Shimano s 105 components are engineered for longevity, with reinforced crank arms and a robust spider. The FC-R5800 is less likely to suffer from premature wear compared to cheaper alternatives, making it a practical choice for daily riders or those who cover high mileage.

6. **Shift Quality**

When paired with a compatible derailleur and cassette (e.g., 105 RD-R5800 and CS-R5800), the FC-R5800 offers smooth and precise shifting. Shimano s indexing system is reliable, and the crankset s design minimizes chain drop, which can be an issue with some lower-end setups.

7. **Aesthetic Appeal**

The FC-R5800 features a sleek, modern design with a matte black finish (or other color options depending on the model year), which complements many bike builds. It looks more premium than entry-level cranks, adding to the overall aesthetic of the bike.

8. **Warranty and Support**

Shimano s 105 components come with a standard warranty (typically 2 years for parts, 5 years for bearings), and Shimano s global service network ensures easy access to repairs or replacements if needed.

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### **Cons**

1. **Not as Light as Carbon or Higher-End Aluminum**

While the FC-R5800 is lightweight for its class, it is heavier than carbon cranks (e.g., Shimano Ultegra or Dura-Ace) or some premium aluminum cranks (e.g., SRAM Force). For competitive riders or those prioritizing weight savings, this may be a drawback, though the difference is often negligible for most recreational or endurance riders.

2. **Limited Upgrade Path**

The FC-R5800 is a mid-tier 105 crankset, and while it can be paired with higher-end derailleurs (e.g., Ultegra or Dura-Ace) for improved shifting, the crankset itself cannot be upgraded to a higher Shimano group (e.g., you cannot swap it for an Ultegra crankset without replacing the entire crankset). If you plan to upgrade your groupset later, you may need to replace the crankset as well.

3. **Hollow Crank Arms Can Be Less Rigid**

The hollow design of the crank arms is primarily for weight savings, which can sometimes result in slightly less rigidity compared to solid crank arms found in higher-end models. However, this is rarely an issue for most riders, as the difference in feel is subtle.

4. **Compatibility with Non-Shimano Components**

While the 172.5mm BCD is standard, pairing the FC-R5800 with non-Shimano components (e.g., SRAM or Campagnolo) may require additional spacers or adapters, especially for bottom brackets. Shimano s proprietary bottom bracket (e.g., BB-86 or BB-87) is not compatible with non-Shimano setups without conversion.

5. **Price Relative to Alternatives**

The FC-R5800 is more expensive than entry-level cranks (e.g., Tiagra FC-R3080 or Sora FC-R2080) but may be seen as less justified in cost compared to higher-end 105 models (e.g., FC-R7800) or carbon cranks from other brands (e.g., SRAM Force or Campagnolo). Riders looking for the absolute best performance may find better value elsewhere.

6. **Potential for Chain Drop**

While Shimano s 105 cranks are generally well-designed, some riders report minor chain drop issues when paired with certain cassettes or derailleurs, especially in the smallest chainrings. This is more common with lower-end derailleurs but can still be a consideration.

7. **Limited Customization**

Unlike some aftermarket cranks (e.g., FSA or Rotor), the FC-R5800 does not offer customizable chainring spacing or bolt patterns, which can be a drawback for riders who want to fine-tune their gearing.

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### **Conclusion**

The **Shimano FC-R5800 105 Crankset (50/34T, 172.5mm)** is an excellent choice for riders seeking a balance of performance, reliability, and value. Its compact chainring setup (50/34T) makes it versatile for climbing and endurance riding, while its lightweight construction and durability ensure it can handle high mileage. The crankset is well-suited for riders who want to upgrade their groupset without investing in the highest-end options, as it pairs well with other 105 components and offers a noticeable improvement over entry-level setups.

However, it is not the lightest or most rigid option available, and its upgrade path is limited. If weight is a critical factor or if you plan to invest in a higher-end groupset in the future, you may want to consider alternatives like the **FC-R7800 (higher-end 105)** or **carbon cranks from SRAM or Campagnolo**. For most riders, though, the FC-R5800 delivers outstanding performance for its price and is a smart investment for those looking to enhance their riding experience.

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### **Recommendation**

- You are upgrading from an entry-level groupset (e.g., Tiagra, Sora) and want a significant performance boost without overspending.

- You prioritize a versatile chainring setup (50/34T) for climbing and endurance riding.

- You value Shimano s reliability, compatibility, and warranty support.

- You plan to pair it with other 105 components (e.g., derailleur, cassette) for a cohesive groupset.

- You are on a budget but still want a high-quality, mid-range crankset.

- Weight is your top priority, and you are willing to pay more for a carbon crankset (e.g., SRAM Force, Campagnolo Record, or Shimano Ultegra/Dura-Ace).

- You want the absolute best performance and are open to investing in a higher-end 105 crankset (e.g., FC-R7800).

- You plan to switch to a non-Shimano groupset (e.g., SRAM or Campagnolo) in the future, as compatibility may become an issue.

- You are a competitive racer or time-trialist who benefits from every gram of weight savings.

**Final Verdict:** The FC-R5800 is a **highly recommended purchase** for riders who want a capable, reliable, and versatile crankset without the premium price tag of higher-end options. It strikes an excellent balance between performance and value, making it one of the best mid-range cranks available.

Details:

In good shape 105 5800 crankset 172.5mm crank length 50/34 chainrings This model has not been recalled, that's only ultra and Duran ace.

part #: fcr5800 prices

• $20.84-$30.00

specifications ribicycl:

• brand: Shimano
• mpn: Fc-r5800
• model: Shimano 105 Fc-r5800
• set includes: Crankset
• crankarm length: 172.5 Mm
• compatible brand: For Shimano
• number of chainrings: Double
• number of speeds: 11 Speed
• part type: Crankset With Chainring

payments ribicycl:

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

offer ribicycl:

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

general ribicycl:

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

seller ribicycl:

• city: Lakewood, Ohio
• rating: 100.0%
• # reviews: 509

shipping ribicycl:

• service: UPS Ground
• carrier: UPS
• transit: 3-6 Days
• cost: $31.36
• type: Calculated
• class: Standard

returns ribicycl:

• policy: No Returns

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