4iiii Ultegra 8000 Dual Crankset with Precision Pro Power Meter
- ShowProduct Information Ridden by the pros, PRECISION PRO dual-side power meters deliver all the benefits of our left-side m... read more
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Product Description
Ridden by the pros, PRECISION PRO dual-side power meters deliver all the benefits of our left-side model (exceptional accuracy, lightweight design, ANT+ and Bluetooth compatibility, 3D powermeter technology), plus a specific breakdown of left and right wattage. Perfect for those who need specific power output from each crank side, or anyone who simply wants the best power meter on the market.
The PRECISION PRO Ride Ready comes pre-installed on a new Shimano crankset.
Key Features:
- 3D power meter technology (patent pending) measures tri-axial strain on your crank
- Accurate, consistent data
- Lightweight, compact design
- Battery status indicator via 4iiii app
- Compatible with ANT+, Bluetooth Smart head units, smartphones, and other 4iiii products
- User-friendly app and configurable rider compensation scale factor
- Easy setup and maintenance
- Over-the-air upgrade capability for adding new features and updates
Specifications:
- Weight: 25 grams (power meter only)
- Data accuracy: +/- 1% error margin
- Battery life: 100+ hours on 2032 coin cell battery
- Battery status indicator: Alert at 15% battery power
Occasionally, without notice, manufacturers change product design and/or specifications.
Power Meter Guide
Power Meter Guide
Power meters are the best way to measure your performance on the bike as they take out variable like wind and surface conditions that can affect your ride times. There are many different types of power meter available, but they will be one of three main types.
Note: Power meters need cycling computers in order to record information. They are normally bought separately and work in conjunction to record and translate your data, using either Bluetooth or ANT+ to connect wirelessly. Most computers and power meters will use one or the other, with a few being compatible with both ANT+ and Bluetooth, so it’s worth making sure your computer matches up with your power meter.
Chainset Power Meters
Chainset power meters are perhaps the most accurate type available and are designed as a part of the crank arm or chainring.
Relatively easy to use, crank arm power meters have a sensor that is incorporated into the crank arm, making them fairly hidden and stealthy. Chainring meters have the sensor attached to the crank spider that holds the chain rings.
Both single sided crank arm and chainring power meters measure power from one side, this means that they don’t pick up on any differences between your legs. Double sided crank arm meters offer the most accurate readings. Chainring based power meters are not so easy to change between bikes, but crank arm power meters can easily be swapped between bikes, as long as the chainset is the same.
Pedal Power Meters
Pedal power meters make up part of the pedals so they can easily swapped between bikes. This means you can get accurate power readings whichever bike you choose to train on. This gives you a single solution to measuring your output on multiple bikes.
Pedal power meters show the smoothness of your pedalling as well as the accuracy of your pedalling position, as they are found on both pedals. Compared to other types they can be a bit more susceptible to knocks as they extend further outwards compared to other meters.
Wheel Hub Power Meters
Hub power meters provide a stealthy way to measure your power output and are easy enough to swap between bikes should both bikes be compatible between wheels. They can be a bit heavier than other power meters, but they are accurate and reliable, and don’t add any extra pieces to your bike.
Finance
Delivery & Guarantee
UK Delivery Information
International Deliveries – Temporarily Suspended 11/11/20
Note: We are still offering deliveries to the Isle of Man, Scottish Highlands, Scottish Islands, Channel Islands, Isle of Wight, Jersey and Guernsey. We are no longer delivering to Northern Ireland.
Courier Delivery update: Due to the COVID19 situation, we are currently experiencing some delays with deliveries. Our couriers are working around the clock to get your order to you as soon as possible but there is a potential delay of up to 48 hours . Please check your tracking on track your order here.
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Please note on the TNT tracking app it may show your delivery status as ‘Collecting’ (as per image below). This means your delivery has left our warehouse and is currently held at TNT main depot and there could be up to a 48 hour delay.
Please keep checking the TNT tracking for further updates. On behalf of TNT we apologise for any delay and inconvenience this may cause.
We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE in the UK, regardless of the size and on all orders over £20.
Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.
Please note that Pre-Order dates can sometimes change due to updated stock information.
Click here for more UK and international delivery information.
Returns & Warranty
It's easy to return a product with our 365 day, hassle free returns.
We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).
Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.
If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.
For more information please visit our Returns & Warranty page.
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