4iiii Precision 3+ Shimano Ultegra R8000 Left Side Power Meter
- Description
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.
How does it work?
The PRECISION 3+ Powermeter is so much more than a power meter. It’s your training partner that offers peace of mind. While you are riding, your PRECISION 3+ Powermeter will transmit watts, cadence, and calories to your head unit of choice. While the power meter is not in use, Find My is enabled and allows you to see its location on a map. You can add your power meter to the Find My app and locate it on an iPhone, iPad, Mac or using the Find Items app on an Apple Watch.
In the Box
Once your ride-ready PRECISION 3+ Powermeter arrives, it just needs to be installed on your bike using the standard Shimano crank installation process. Connect a head unit or computer, and you can start riding with power. Connect to the Find My app with your iPhone or iPad to start tracking your power meter.
Warranty & Durability
Ridden through rain storms at Strade Bianche, mud filled cross country mountain bike races, and even tested amidst the salt spray of the ocean on Oracle Team USA’s America’s Cup competitors, you can be assured that your 4iiii power meter will be as tough as you are and is backed with an industry leading 3-year warranty. All 4iiii power meters are IPX7-rated for water immersion up to one meter and backed with an industry-leading 3-year warranty.
Indoor Riding
If the weather or climate make riding outdoors tough, your 4iiii power meter can be used with all popular indoor-training apps, such as Zwift, TrainerRoad, Wahoo SYSTM, Rouvy, and more. Simply use your favourite app’s connection procedure over ANT+ or Bluetooth Smart, put your bike on a trainer, and get riding!
Features
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Apple Find My: Offering the peace of mind in knowing where your power meter is
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Battery Life: With up to 800 hours of battery life, you won’t have to worry about changing your battery for years to come
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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
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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
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Ultra Low Profile: With an ultra low profile design, your 4iiii power meter is compatible with more bike frames than ever before
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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
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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
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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
SPECIFICATIONS
- Type: Non-drive side
- ✔ Apple Find My
- ✔ ANT+ & Bluetooth Smart
- ✔ Automatic Terrain Selector
- ✔ Cycling Metrics
- ✘ Left/Right Balance
- CR2032 Coin Cell
- Accuracy +/- 1 %
- Battery Life: up to 800 hours
- Waterproof Rating: IPx7
- Cadence Range: 30 - 170 rpm
- Power Range: 0 - 4,000 W
- Profile: 5.5 mm
- Power meter weight excluding crankset: 9 g
- Operating Temperature: 0 - 50 ºC
- Storage Temperature: -40 - 60 ºC
- 3 Year Warranty
Easy Returns
Free shipping on orders over $150 (some exclusions apply)
Help
Good to know
Shipping, returns and the fine print. Still stuck? Call or visit either shop.
How does shipping work?
Canada Post (Priority or Express): delivery in 7–14 business days, with tracking in your shipping confirmation.
UPS: usually 2–7 business days (customs can stretch it to 15), fully tracked.
Cost depends on the size and weight of the package.
Is shipping free?
Most orders over $150 in Canada ship free.
Bikes, frames, wheelsets, indoor trainers and other bulky items don't. One of our team will contact you with shipping options for those.
A few items, like Favero Assioma pedals and Nimbl × Nike shoes, always have a shipping charge.
When will my order ship?
Please allow 1–2 business days to pack and ship most orders. Bikes, wheels and trainers can take 5–7 business days to prepare. Busy periods can add a little time.
Can I return it?
You have 30 days from the date of purchase. After 30 days, purchases are final sale. Special orders may have a restocking fee.
Bring proof of purchase. Items must be unused and in the original packaging.
What's final sale?
- Sale items
- Gift cards
- Tools
- Cleaners and maintenance products
- Downloadable software
- Health, hygiene and personal care items
- Food and nutrition
- Hazardous materials, flammable liquids and gases
- Items with obvious signs of use or damaged packaging
Please don't send your purchase back to the manufacturer. Some situations may only qualify for a partial refund.
How do I send a return?
Mail your item(s) to 151 Robinson Street, Oakville, Ontario L6J 7N3.
Return shipping is on you, and original shipping isn't refunded. For exchanges, shipping the new item is taken off your refund. For anything over $75, use tracked shipping or insurance.
Once we've received and checked your return, we'll email you. Approved refunds go back to your original payment method, so allow up to 5 business days for them to show.
If you declined shipping protection, Racer Sportif isn't liable for packages lost, damaged or stolen after they leave the store.