4iiii PRECISION 3+ Shimano Ultegra R8100 Power Meter

$449.99 Buy It Now or Best Offer
free,30-Day Returns

Seller Store powermetercity
(3997) 100.0%,

Location: Aliso Viejo, California
Ships to: US,
Item: 255810753665

Return shipping will be paid by:Seller
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Return policy details:
Power Source:Batteries
Color:Black
Indoor/Outdoor:Indoor/Outdoor
Material:Aluminum
MPN:Does Not Apply
Vintage:No
4iiii Innovations:4iiii Innovations
Type:Crank Arm
Accuracy:1%
Measurement Provided:Single-Sided
Manufacturer Warranty:3 years
PRECISION 3+ Ultegra R8100:PRECISION 3+ Ultegra R8100
Features:Bluetooth SMART,ANT+,Cadence,Downloadable,Power
Sport/Activity:Cycling

4iiii PRECISION 3+ Shimano Ultegra R8100 Power MeterIntroducing the all new 4iiii PRECISION 3+ Shimano Ultegra R8100 Power Meter. 4iiii has combined their patent pending 3-D tri-axial strain gauge technology, measured at +/- 1.0% accuracy, with Shimano’s 12-speed Ultegra R8100 groupset. The result is one of the lightest, most affordable and most accurate direct force power meters available.The PRECISION determines your total power based on the force that is generated by your left leg. This left-only design allows for a power meter that is lightweight and easy to install. Specifically, the power meter adds only 9 grams to your crank arm and is installed in about 10 minutes. In addition, the PRECISION is compatible with both ANT+ and Bluetooth SMART devices. This means you can use it with your favorite bicycle computer, watch or smart phone. Key Product DetailsCompatibility:This power meter is compatible with Shimano R8100 cranksets. It can also be installed on other Shimano road cranksets, as long as they use Shimano’s Hollowtech II interface. See Compatibility tab for more information.Power Measurement:This 4iiii power meter measures left leg power and doubles the value to account for both legs (assumes both legs are generating the same force).New 4iiii R8100 PRECISION 3+!The all new 4iiii R8100 PRECISION 3+ power meter features the following improvements over the version 2:Apple Find My which allows you to always know where your bike is!800 hours of battery life – the longest coin cell battery life in a power meter on the market!Sleeker, slimmer profile making most incompatibility issues a thing of the past.Stronger antenna for even better connectivity.Indicator light for battery life, successful zero-offset and when the unit has been turned on.Key Features:Affordable, accurate to within +/- 1.0%, lightweight at only 9 grams of added weight, 800 hours of battery life, CR2032 user-replaceable battery, ANT+ and Bluetooth compatible, easy to install, 3-year warranty. See Specs tab for more information.Advice From Our Staff:4iiii left side crank arms are some of our best-selling units. They work with most Shimano cranksets, are affordable and easy to install. The one consideration is they only measure left leg power compared to some other power meters that measure power from both legs (those versions usually cost more however). Options For This Power MeterCrank arm lengths: 165 mm | 170 mm | 172.5 mm | 175 mm CompatibilityCrankset: This 4iiii power meter is compatible with Shimano R8100 cranksets.Please note, the power meter can also be installed on other Shimano road cranksets, as long as they use Shimano’s Hollowtech II interface. These cranksets can easily be identified by the two opposing pinch bolts that are used to secure the left side crank arm. Please see the image below and contact us if you have any questions on compatibility.Check Frame Clearance: Crank-arm based power meters attach a sensor on the inside of the left crank arm. On some bikes, there is not enough room between the left crank arm and the chainstay for the sensor to clear the frame. Therefore, you should make sure you have at least 8 mm of clearance for the PRECISION 3+. Also, make sure that you don’t have a bottom bracket mounted rear brake (used on some aero and TT bikes). The important area to measure is right in the middle of the crank arm. Please refer to the image below.If you find that your clearance is close but not quite sufficient, what many people will do is simply install a 1 or 2 mm bottom bracket spacer (between the left crank arm and the frame). This should provide you with the clearance you need.In the Box4iiii PRECISION Shimano Ultegra R8100 Power MeterCR2032 coin cell battery SpecsName4iiii PRECISION Ultegra R8100Bike TypeRoadLocation of Power MeasurementCrank ArmLeft or Both Legs MeasuredLeft onlyIndependent Left/Right MeasurementNoInstallationEasierCrank Arm MaterialAluminumCommunication ProtocolANT+ and Bluetooth SMARTClaimed Accuracy+/- 1.0%Automatic Temp. CompensationYesWeight9 grams (sensor) | 204 grams (170 mm)Battery TypeCR2032 coin cellBattery Life800 hoursMethod of Cadence MeasurementAccelerometerWarranty3 years Why Buy from Power Meter City1. We ship fast! All orders ship on the same day your order is placed!2. Free shipping on all orders in the U.S.3. We are an authorized 4iiii dealer and this product comes with a full warranty.4. Expert advice and customer service in case you need any help.5. We offer a free, 30-day return policy on new items. About our CompanyAt Power Meter City, we focus on power meters and related accessories and components. Our focus on these products means we can offer you the best possible selection, advice and service.We have been in business since 2016 and are based in southern California. We are an authorized dealer of every product we sell.

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