SKU: 55509693433
rennrad powermeter

rennrad powermeter 4iiii ULTEGRA R8100 PRECISION 3+ POWERMETER

Sale price$25.74 Regular price$28.60
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  • USA
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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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For Your Every Summer RSVP, with Code: SUMMER15

Description

rennrad powermeter 4iiii ULTEGRA R8100 PRECISION 3+ POWERMETER4iiii's most powerful unit yet, compressed into a smaller, lighter package and featuring Apple Find My, the PRECISION 3+ Powermeter is a proven choice of pros and amateur riders alike. Whether you're fighting for a qualifying spot in Kona, logging countless hours on virtual riding platforms or looking to improve your time in the local KOM segment, you want accurate and reliable tools to unlock your potential. With up to 800 hours of battery life, an

4iiii's most powerful unit yet, compressed into a smaller, lighter package and featuring Apple Find My, the PRECISION 3+ Powermeter is a proven choice of pros and amateur riders alike. Whether you're fighting for a qualifying spot in Kona, logging countless hours on virtual riding platforms or looking to improve your time in 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.

HOW IT WORKS.
The PRECISION 3+ Powermeter is so much more than a power meter. It is your training partner that gives you peace of mind. While cycling, your PRECISION 3+ Powermeter sends watts, cadence and calories to your navigation of choice. When the power meter is not in use, Find My is enabled and your power meter turns into an Apple Airtag. You can add your bike and view its location through the Apple FindMy app on your iOS device.

FEATURES
APPLE FIND MY
The peace of mind of knowing exactly where your bike is, wherever you go.

800 HOURS OF BATTERY LIFE
With up to 800 hours of battery life, using the same CR2032 button cell battery, you won't have to worry about replacing your PRECISION 3+ battery for years.

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

AUTOMATIC TERRAIN SELECTOR
Detects the terrain you ride on for more responsive cadence and power feedback/data. Ride confidently on the less traveled roads.

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: 55509693433

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4.7 ★★★★★
Based on 11 reviews
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OBG
Natrona Heights, US
★★★★★ 3
One size definitely doesn’t fit. Otherwise Ok.
Color: Black
OSFM - one size fits most. It should be OSFS - one size fits small/some. Measured my head size and according to their chart I’m l/XL. This cap is tight fitting and gives you a headache after an hour. Otherwise it’s fine. Keeps your head cool, is absorbent and works well under a helmet.
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Reviewed in the United States on November 21, 2025
G
Verified Purchase
GET SOME!
Whiting, US
★★★★★ 5
Feels refreshing on the head…
Color: Black
I purchased a few of these on UA application. However, when I decided to put some more the UA app was out of stock. I love the skull caps!! I use them for the gym and for work. They’re very comfortable and outstanding if you’re in a hot environment, sweat a lot or just want to be cooler. They haven’t slipped at all and it’s great value for what I spent! So far I have seven in total. I may purchase three more shortly before summer hits that way I can use one at the gym and one at work per day and don’t have to worry about doing my laundry just to have clean skull caps.
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Reviewed in the United States on February 2, 2026
A
Verified Purchase
Amazon Customer
Waukegan, US
★★★★★ 5
The perfect sock!
Size: 6-10, Color: Halo Gray/Assorted
The only socks that I can wear with my hey dudes. They stay on my ankles and never slid down into the shoe. I will forever order these as long as they are available. They are comfy too!
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Reviewed in the United States on August 21, 2025
R
Verified Purchase
Ryan S
Pawtucket, US
★★★★★ 5
Good option, especially in warmer weather
Size: 6-10, Color: Black
High quality socks and very durable. Nice touch adding the grip on the back of the ankle so the sock stays up. Size is a true fit to the size of your foot as well.
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Reviewed in the United States on April 17, 2025
P
Verified Purchase
Patricia
Louisville, US
★★★★★ 5
Love these socks!
Size: 6-10, Color: White
Comfortable, no show, and most importantly The Do No Slip!!!! I keep coming back to add to my supply because they have become the only sock I wear. I’ve been using them for a couple years now and they hold to great to washing, bleaching and the dryer. Highly recommended.
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Reviewed in the United States on July 24, 2024

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