SKU: 98457583713

4iiii - Left Side Precision 3+ Ultegra R8100 Power Meter

Sale price$418.45 Regular price$464.95
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Ships within 48 hours · Estimated delivery Sep 20 - Sep 25

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Description

4iiii - Left Side Precision 3+ Ultegra R8100 Power Meter4iiii LEFT SIDE PRECISION 3+ ULTEGRA R8100 POWER METER Our most powerful unit to date, compressed into a smaller, lighter package and featuring support for Apple Find My, the PRECISION 3+ Powermeter is a proven choice of pros and weekend warriors alike. Whether youre fighting for a Kona qualification spot, logging countless hours on virtual riding platforms or looking to better your time up the local KOM segment, you want accurate and reliable tools

4iiii - LEFT SIDE PRECISION 3+ ULTEGRA R8100 POWER METER 

Our most powerful unit to date, compressed into a smaller, lighter package and featuring support for Apple Find My, the PRECISION 3+ Powermeter is a proven choice of pros and weekend warriors alike. Whether you’re fighting for a Kona qualification spot, logging countless hours on virtual riding platforms or looking to better your time up the local KOM segment, you want accurate and reliable tools to unlock your potential. With up to 800 hours of battery life, an automatic terrain selector, +/-1% accuracy and backed by our industry-leading 3-year warranty, the PRECISION 3+ Powermeter will be your trusted tool for years to come.

 

  • APPLE FIND MY: Offering the peace of mind in knowing where your power meter is.

  • BATTERY LIFE: With up to 800 hours of battery life, you won’t have to worry about changing your battery for years to come.

  • ACCURACY IN 3D: Not everyone has the perfect pedal stroke. With +/- 1% accuracy, 4iiii is the only crank-based power meter to use 3 strain gauges to measure all forces in your pedal stroke.

  • AUTOMATIC TERRAIN SELECTOR: Detects the terrain you’re riding on for more responsive cadence and power feedback/data. Ride the roads less traveled with confidence.

  • ULTRA LOW PROFILE: With an ultra low profile design, the PRECISION 3 is compatible with more bike frames than ever before.

  • LIGHT WEIGHT: At only 9 grams the Precision 3 Powermeter weighs about the same as a sip from your water bottle. Our goal is to help you get faster, not to slow you down.

  • WATERPROOF: Designed to work in our tough environment. With an IPX7 waterproof rating you can be assured that your power meter can handle the toughest conditions.

  • 3 YEAR WARRANTY: A lot can happen in 3 years. You probably won’t need to use it, but it’s reassuring to know that all 4iiii power meters are backed by an industry leading 3-year warranty.

 

Product status indication LED light - for wake up (green), zero offset (blue) and low battery (red)

Patented 3D strain gauge technology to deliver +/-1% accuracy 

Ultra slim design to fit almost every frame

Active temperature compensation

Over the air feature and firmware upgradability

Coin cell battery powered (CR2032)

Compatible with 3rd party training apps such as Zwift, TrainerRoad, SYSTM and more

Waterproof rating: IPx7

Cadence range: 30 - 170 rpm

Power range: 0 - 4000w

Length: 63.79mm

Width: 26.42mm

Height: 5.5mm

Operating temperature: 0 to 50°C 

Communication protocol: ANT+, Bluetooth

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 98457583713

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4.6 ★★★★★
Based on 29 reviews
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Verified Purchase
Jamie Goodrich
Houston, US
★★★★★ 5
Satisfying and convenient.
Color: M01 Black
I've been drinking powder coffee and drip coffee, and wanted a change. This thing is really satisfying to use (I love the crunch) and clean. It's really sturdy, I've dropped mine once or twice and it's still going. It's small, and easy to adjust, but I mostly just grind it medium. It's utilitarian, but still looks quite pretty. Looks just like the pictures.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
L
Verified Purchase
Linda M
New York, US
★★★★★ 5
I use it everyday and love it
Color: M01 Black
I was worried when I first purchased my mini manual coffee grinder. I was afraid I would not be able to use it due to arthritis in my hands. Well! No worries now. This little guys works great. It grinds fine to course and without undies stress on my hands. Thank you for making such a great grinder for all us nomad folks who enjoy freshly ground coffee in our rigs.
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Reviewed in the United States on June 8, 2026
S
Verified Purchase
Shokhjakhon Bakhromov
Draper, US
★★★★★ 3
Good for the price, but has its limits
Color: M01 Black
You get what you pay for. Grind consistency is decent, but even the lowest grain setting won't get you close to a true espresso grind — it still produces a coarser result than expected. It's fine if you're using a pressurized portafilter, but not ideal for a bottomless one. Worth considering only if you don't mind spending 15 minutes a day grinding your morning coffee. After a few months, I got tired of the manual process and now just buy pre-ground espresso from a local coffee roastery
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Reviewed in the United States on May 19, 2026
S
Verified Purchase
Sofia
Battle Creek, US
★★★★★ 5
Does what it says, easy to adjust, easy to use
Color: M01 Black
Works as it should, easy grinding action, and I like that I can have a quite fine grind.
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Reviewed in the United States on May 17, 2026
M
Verified Purchase
Mike Henry
Omaha, US
★★★★★ 5
Strong, smooth, and reliable☕️
Flavor Name: Major Dickason's Blend, Size: 10.5 Ounce (Pack of 1)
This is iur go-to dark roast. It’s bold without tasting burnt, and the flavor is really smooth. Wakes you up without any weird aftertaste. I’ve had it a bunch of times and it’s always consistent. Solid cup of coffee.
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Reviewed in the United States on April 21, 2026

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