1. Bicycle Electronics Items
  2. sku: 2385619493160752
  3. FSA 4IIII

FSA 4IIII Power Meter 840031049728 Sl 175MM 34/50T

4iiii Fsa 840031049728 Sl-k Power Meter 175mm 34/50t

( Brand: Fsa ), ( Type: Crank Arm ), ( Sport/activity: Cycling ), ( UPC: 840031049728 )

Review FSA Sl k Power Meter 175mm 34/50t

The FSA SL-K Power Meter from 4iiii is a high-performance crankset and power meter system designed for road cycling enthusiasts and athletes who seek accurate and reliable power data to optimize their training and racing. This specific model features a 175mm length and is compatible with 34 and 50 tooth chainrings.

The SL-K Power Meter integrates a state-of-the-art power sensor into the left crankarm, allowing for precise measurement of your pedaling power. The system uses ANT and Bluetooth technology for seamless connectivity with various cycling computers, smartphones, and training apps. The battery life is impressive, offering up to 30 hours of ride time before requiring a recharge.

The crankset itself is made of carbon fiber, ensuring a lightweight yet robust construction. The FSA SL-K Power Meter is both stiff and responsive, offering optimal power transfer and efficient energy utilization. The included 34 and 50 tooth chainrings provide a wide range of gearing options, accommodating various terrains and riding styles.

Installation of the power meter is straightforward, with the provided chainring bolt and bottom bracket adapter allowing for easy installation and removal. The 4iiii ELITE app offers a user-friendly interface for customizing your training zones, analyzing power data, and tracking your progress over time.

The SL-K Power Meter from 4iiii is the perfect solution for those looking to elevate their training and racing performance by gaining valuable insights into their power output. With its advanced technology, sleek design, and versatile compatibility, this power meter is an essential tool for any serious road cyclist.

FSA SL-K 4iiii Power Meter: A Detailed Analysis of Its Pros and Cons

Introduction:

The FSA SL-K 4iiii Power Meter is a high-performance crankset that integrates a power meter into its design. This component is suitable for serious cyclists who are keen on monitoring their power output during training and races. In this analysis, we will discuss the pros and cons of investing in this power meter.

Pros:

1. Advanced Technology: The FSA SL-K 4iiii Power Meter utilizes 4iiii's Dual-Sided Power Meter technology, which measures power output from both legs independently. This feature provides more accurate and reliable data, enabling cyclists to fine-tune their training and performance.

2. Lightweight: Weighing only 736 grams for the complete 172.5mm setup, the FSA SL-K 4iiii Power Meter is a lightweight option compared to other power meters in the market. This feature is essential for competitive cyclists who aim for minimal weight reduction in their bike setup.

3. Compatibility: This power meter is compatible with various chainrings, including 34t and 50t options, catering to riders with varying pedaling styles and preferences.

4. Durable: The FSA SL-K 4iiii Power Meter is built using high-quality materials, ensuring long-lasting performance and durability. It has an IPX7 waterproof rating, making it suitable for use in various weather conditions.

5. Easy to Install: The power meter comes with a user-friendly installation process and can be mounted on the bike without requiring professional assistance.

Cons:

1. High Cost: The FSA SL-K 4iiii Power Meter is a premium product with a relatively high price tag. This investment may not be suitable for casual or recreational cyclists.

2. Limited Customization: While the FSA SL-K 4iiii Power Meter offers various chainring options, it does not provide extensive customization possibilities, such as adjusting the power meter's zero offset or calibration settings.

3. Battery Life: With a claimed battery life of 30 hours, the FSA SL-K 4iiii Power Meter may require frequent charging, which can be inconvenient for some cyclists.

4. Compatibility Limitations: The power meter may not be compatible with all frame sizes and shapes, requiring careful consideration before purchasing.

5. Complexity: The FSA SL-K 4iiii Power Meter incorporates advanced technology, which may be overwhelming for some cyclists. Proper understanding and utilization of the data provided by the power meter may require additional time and effort.

Conclusion:

The FSA SL-K 4iiii Power Meter is a cutting-edge component that offers precise power measurement, lightweight design, and compatibility with various chainring options. However, its high cost, limited customization, battery life, and compatibility limitations may not appeal to all cyclists.

Recommendation:

If you are a competitive cyclist looking for an accurate and reliable power meter with a lightweight design, the FSA SL-K 4iiii Power Meter is an excellent investment. However, carefully consider the cost and compatibility limitations before making a purchase. If you are a casual or recreational cyclist, there may be more affordable and suitable alternatives in the market.

Details:

Up for sale is a FSA SL-K 4IIII Power Meter Part No. Material: Carbon fiber crank arms with aluminum spindle. Part Number: 030. Condition: Brand new, unused, but has been sitting unused and may have some dust minor scratches from storage.

The crankiest and power meter are fully functional, the scratches purely cosmetic do not affect performance or integrity of product. Specifications: model: FSA SL-K 4IIII Power Meter. Connectivity: ANT and Bluetooth Smart. This is a New Old Stock NOS item, meaning it brand new and unused, but has been sitting unused for some time.

As a result, there may be some dust and minor scratches from storage, but it has never been installed or used on bike.

part #: 840031049728 prices

  • $257.25-$368.91

specifications velocipedespark:

  • brand: Fsa
  • type: Crank Arm
  • sport/activity: Cycling
  • upc: 840031049728

shipping velocipedespark:

  • service: USPS Priority Mail
  • class: Expedited
  • carrier: USPS
  • cost: $0.00
  • transit: 3-8 Days
  • type: Calculated

returns velocipedespark:

  • policy: No Returns

seller velocipedespark:

  • city: Compton, California
  • # reviews: 1128
  • rating: 100.0%

payments velocipedespark:

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

offer velocipedespark:

  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • availability: In Stock
  • started: August 11, 2025

general velocipedespark:

  • condition: New
  • Cycling > Bicycle Electronics > Power Meters
type: crank arm, sport/activity: cycling,
category: sporting goods > cycling > bicycle electronics > power meters, sku: 2385619493160752,

Fsa 4IIII Is Similar To:

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3 offers $257.25–$368.91 USD
  • Used. Offer #1 priced at $257.25 + $9.99 delivery = $267.24* total. +$9.99 shipping
  • Used. Offer #2 priced at $368.91 + $0.00 delivery = $368.91* total. FREE SHIPPING
  • New other (see details). Offer #3 priced at $325.00 + $0.00 delivery = $325.00* total. FREE SHIPPING

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