1. Bicycle Electronics Items
  2. sku: 2284539102130752
  3. 4IIII INNOVATIONS R7100

4IIII INNOVATIONS R7100 Precision Shimano Power Meter Meter.

4iiii Innovations R7100 Precision 3 Shimano Power Meter. All Sizes

( Brand: 4iiii Innovations ), ( Model: PRECISION 3 SHIMANO R7100 ), ( Crank Arm Length: 170 Mm ), ( Power Source: Batteries ), ( Color: Black ), ( Indoor/outdoor: Indoor/outdoor ), ( Material: Aluminum ), ( Vintage: No ), ( Type: Crank Arm ), ( Measurement Provided: Power ), ( Manufacturer Warranty: 3 Years ), ( Features: Bluetooth Smart, Ant, Cadence, Downloadable, Power ), ( Sensors: Accelerometer ), ( Sport/activity: Cycling ), ( Manufacturer Part Number: R7100 )

Review 4IIII INNOVATIONS Precision Shimano Power Meter. All Sizes

The 4iiii Innovations R7100 Precision Shimano Power Meter is a state-of-the-art cycling power meter designed to provide accurate and reliable power data to train smarter and improve performance. This power meter is specifically engineered to fit Shimano cranksets, making it an excellent choice for Shimano users looking to upgrade their training experience.

At its core, the R7100 power meter is based on 4iiii's patented strain gauge technology, which measures power at the crankarm using advanced micro-electromechanical systems (MEMS). This technology is known for its exceptional accuracy and durability, with a measurement uncertainty of less than 1%. The power meter comes with a removable spider that can be easily installed on compatible Shimano crankarms, allowing for a simple and straightforward setup process.

One of the standout features of the R7100 power meter is its wireless connectivity. It utilizes ANT and Bluetooth technology to transmit power data directly to a wide range of head units, training apps, and other devices. This ensures a seamless and hassle-free experience, allowing riders to focus on their training without worrying about complicated setup procedures or data transfer.

The R7100 power meter also boasts a long battery life, with up to 30 hours of ride time on a single charge. Additionally, it features an automatic sleep mode to conserve battery life when not in use. The power meter's sleek design and lightweight construction make it a great addition to any bike, with a weight of only 30 grams per crankarm.

Another notable feature is the R7100 power meter's temperature compensation, which ensures accurate power readings even in extreme temperatures. This is particularly important for riders who train in various conditions or environments.

The R7100 power meter comes with a user-friendly mobile app that allows riders to view and analyze their power data, as well as customize settings and calibrate the power meter. The app also offers integration with popular training platforms like TrainingPeaks and Strava, making it easy to share data and sync workouts.

In summary, the 4iiii Innovations R7100 Precision Shimano Power Meter is a high-performance and versatile training tool designed for serious cyclists who want to take their training to the next level. Its accurate power measurement, wireless connectivity, long battery life, and user-friendly features make it an excellent choice for anyone looking to gain a deeper understanding of their power output and optimize their training.

The 4iiii Innovations R7100 Precision Shimano Power Meter is a popular choice among cyclists for its accuracy and compatibility with Shimano cranksets. Here are some pros and cons that may help you make an informed decision about purchasing this power meter.

Pros:

1. High accuracy: The R7100 power meter is known for its high accuracy, measuring power within /- 1.5%.

2. Easy installation: The power meter can be installed without the need for a crank puller, making it a relatively easy installation process for most cyclists.

3. Compatibility: The R7100 power meter is compatible with a wide range of Shimano cranksets, making it a versatile option for riders.

4. Durable: The power meter is constructed with high-quality materials, including a waterproof casing and a robust design, making it a durable option for frequent use.

5. Integrated temperature sensor: The power meter includes an integrated temperature sensor, which can help provide more accurate power readings by accounting for temperature variations.

Cons:

1. Cost: The R7100 power meter is a premium product, and its cost may be a significant consideration for some cyclists.

2. Battery life: The power meter's battery life is approximately 300 hours, which may require frequent charging for some riders.

3. Complex setup: While the installation process is relatively straightforward, the initial setup of the power meter can be complex, requiring calibration and configuration using the 4iiii mobile app.

4. Limited compatibility with some Shimano cranksets: The power meter is not compatible with all Shimano cranksets, so it's essential to ensure that your specific crankset is supported before making a purchase.

In conclusion, the 4iiii Innovations R7100 Precision Shimano Power Meter is a high-quality, accurate, and durable power meter that offers compatibility with a wide range of Shimano cranksets. However, its cost, limited battery life, and complex setup process may be drawbacks for some cyclists. Ultimately, if you value high accuracy and compatibility with a Shimano crankset and are willing to invest in a premium product, the R7100 power meter may be an excellent choice for you.

Details:

Check Frame Clearance: Crank-arm based power meters attach a sensor on the inside of left crank arm. When it comes to weight, there is no equal. Also, make sure that you don't have a bottom bracket mounted rear brake used on some aery and TT bikes. Please refer to the image below.

The important area to measure is right in the middle of crank arm. On some bikes, there is not enough room between the left crank arm and chain stay for sensor to clear frame. These crank sets can easily be identified by the two opposing pinch bolts that are used to secure left side crank arm. It can also be installed on other Shimano road crank sets, as long they use Shimano Hollow tech II interface.

The 4IIII PRECISION Shimano R7100 Power Meter is one of the most accurate, lightweight and affordable direct force power meters available. This 4IIII power meter replaces your current left-side crank arm. The 4IIII PRECISION sensor weighs a mere 9 grams practically nothing. While this works well for many riders, it may be less accurate if there is a strength difference between your legs.

4 iiii uses patent pending 3-D Teri-axial strain gauge technology in order to achieve /- 1.0% accuracy, which places it among the most accurate power meters available. In addition, the power meter features dual ANT and Bluetooth SMART compatibility so you can use it with a wide range of devices.

part #: r7100 prices

  • $332.49-$571.43

specifications velocipedespark:

  • brand: 4iiii Innovations
  • model#: PRECISION 3 SHIMANO R7100
  • crank arm length: 170 Mm
  • power source: Batteries
  • color: Black
  • indoor/outdoor: Indoor/outdoor
  • material: Aluminum
  • vintage: No
  • type: Crank Arm
  • measurement provided: Power
  • manufacturer warranty: 3 Years
  • features: Bluetooth Smart, Ant, Cadence, Downloadable, Power
  • sensors: Accelerometer
  • sport/activity: Cycling
  • manufacturer part number: R7100

returns velocipedespark:

  • method: Money back
  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Seller

shipping velocipedespark:

  • type: Fixed
  • service: USPS Priority Mail
  • class: Expedited
  • cost: $0.00
  • carrier: USPS
  • transit: 3-7 Days

payments velocipedespark:

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

offer velocipedespark:

  • quantity: 2
  • availability: In Stock
  • options: Ship-to-home
  • started: July 23, 2025
  • sold: 0

seller velocipedespark:

  • rating: 99.9%
  • # reviews: 5493
  • city: Aliso Viejo, California

general velocipedespark:

  • Cycling > Bicycle Electronics > Power Meters
  • condition: New
crank arm length: 170 mm, power source: batteries, indoor/outdoor: indoor/outdoor, vintage: no, type: crank arm, measurement provided: power, manufacturer warranty: 3 years, features: bluetooth smart, ant, cadence, downloadable, power, sensors: accelerometer, sport/activity: cycling,
category: sporting goods > cycling > bicycle electronics > power meters, color: black, material: aluminum, sku: 2284539102130752,

4iiii Innovations R7100 Is Similar To:

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5 offers $332.49–$571.43 USD
  • New. Offer #1 priced at $332.49 + $0.00 delivery = $332.49* total. Connect a head unit or computer, and you can start riding with power. Shimano 105 7100 arm which is backwards compatible with every hollowgram crankset in the last 20 years.FREE SHIPPING
  • Nuovo. Offer #2 priced at $470.20 + $26.82 delivery = $497.02* total. CARATTERISTICHE PRINCIPALI / QUICK INFO: Lunghezza Pedivelle (mm) / Crank Length (mm) : 172,5 / 172,5.+$26.82 shipping
  • New. Offer #3 priced at $571.43 + $26.81 delivery = $598.24* total. Powerful to date, compressed in a smaller and lighter package and equipped with the support for Apple Find My, the Precision 3+ Powermeter is a consolidated choice. Our most powerful power meter to date, compressed into a smaller, lighter package and featuring support for Apple Find My, the PRECISION 3+ Powermeter is a proven choice for pro and recreational cyclists alike.+$26.81 shipping
  • Nuovo. Offer #4 priced at $540.81 + $26.82 delivery = $567.63* total. +$26.82 shipping
  • New. Offer #5 priced at $349.99 + $0.00 delivery = $349.99* total. While this works well for many riders, it may be less accurate if there is a strength difference between your legs.FREE SHIPPING

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