4iiii Dura Ace 9100 Chainset with Precision Pro Power Meter

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From £789.00
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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.

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.

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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.

crank arm power meter

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.

pedal power meter

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.

wheel hub power meter

Finance

How do I apply for finance?

At Tredz, you can spread the cost of your purchase and pay monthly over 6-48 months, interest free (dependent on repayment terms and amount). Finance is provided by Barclays Partner Finance and PayPal Credit with 0% APR finance available on purchases over £250 for Barclays Partner Finance and from £99 for PayPal Credit. Eligibility criteria apply.

1Fill your basket with everything you want from Tredz and go to the checkout.

2During checkout, select the finance option you want as your method of payment.

3You will be sent to our finance provider's secure server to complete your application.

4Finance providers PayPal & Barclays will use the information provided to make a decision and complete checkout if you are approved.

Read more about buying on finance

Barclays Eligibility Checker

You can use the Barclays Eligibility Checker to find out if you are likely to be accepted for a loan through Barclays Partner Finance without affecting your credit score. 

Credit is subject to application, financial circumstances and borrowing history. Tredz is the credit broker and not the lender. Barclays Partner Finance is the lender.

Please note there are some minimum criteria if you later decide to apply for finance, to view please click here

Barclays Partner Finance Eligibility Criteria, on the date of the application, you must;

  • Be aged 18 or over
  • Have lived permanently in the UK for the last three years (i.e. provide 3 years of UK address history or up to the last 3 UK addresses)
  • Not be subject to Bankruptcy or a Debt Relief Order (or Scottish equivalent)

For information - The credit check carried out will consider additional information relating to the performance of previous or existing commitments and any county court judgements.

You must also be one of the following:

  • In Permanent Employment which provides regular sustainable income of at least £6000 per year
  • Self-employed (upon request you may need to provide proof of income, for example a recent bank statement and/or their SA302)
  • Retired from regular employment (they may need to see proof of your pension or income)
  • Receiving certain DWP (Department for Work and Pensions) benefits that provide regular sustainable income.

You must also have:

  • A UK bank account from which Direct Debits can be taken
  • A mobile number
  • An E-mail Address

Please also note, A valid mobile number and e-mail address are mandatory for applying for a finance application. If you do not have a valid email address, you will not be able to apply for the finance.

Eligibility Checker *This takes you to the Barclays secure gateway

Flexible finance options

Choose your term.

£789.00 Your basket + this product

Lowest monthly cost

£20.50 11.9% APR

per month

for 48 months

Best 0% interest

£65.75 0% APR

per month

for 12 months

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Barclays Representative Example: If total purchase price is £1,399.00 and your selected term is 36 months 11.9% APR Representative, Annual Interest Rate 11.9% Fixed, you would pay £46.00 per month. Total amount payable will be £1655.83 with a cost of credit of £256.83. Finance is subject to application, financial circumstances and borrowing history. Performance Cycling Limited acts as a credit broker and not the lender, Barclays Partner Finance acts as the lender. Barclays Partner Finance is a trading name of Clydesdale Financial Services Limited, a member of the Barclays group. Clydesdale Financial Services Limited is authorised and regulated by the Financial Conduct Authority (Financial Services Register number: 311753). Registered in England. Registered No: 2901725. Registered Office: 1 Churchill Place, London E14 5HP.
PayPal Credit Representative Example: Representative 21.9% APR (variable), Purchase interest rate 21.9% p.a. (variable), Assumed credit limit £1,200.00.

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. 

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.

Please download the TNT Track and Trace App for iOS here and Android here so you can keep an eye on your delivery and any further updates.

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.

tnt delivery

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 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.

Show finance options for:

Barclays Eligibility Checker

You can use the Barclays Eligibility Checker to find out if you are likely to be accepted for a loan through Barclays Partner Finance without affecting your credit score. 

Credit is subject to application, financial circumstances and borrowing history. Tredz is the credit broker and not the lender. Barclays Partner Finance is the lender.

Please note there are some minimum criteria if you later decide to apply for finance, to view please click here

Barclays Partner Finance Eligibility Criteria, on the date of the application, you must;

  • Be aged 18 or over
  • Have lived permanently in the UK for the last three years (i.e. provide 3 years of UK address history or up to the last 3 UK addresses)
  • Not be subject to Bankruptcy or a Debt Relief Order (or Scottish equivalent)

For information - The credit check carried out will consider additional information relating to the performance of previous or existing commitments and any county court judgements.

You must also be one of the following:

  • In Permanent Employment which provides regular sustainable income of at least £6000 per year
  • Self-employed (upon request you may need to provide proof of income, for example a recent bank statement and/or their SA302)
  • Retired from regular employment (they may need to see proof of your pension or income)
  • Receiving certain DWP (Department for Work and Pensions) benefits that provide regular sustainable income.

You must also have:

  • A UK bank account from which Direct Debits can be taken
  • A mobile number
  • An E-mail Address

Please also note, A valid mobile number and e-mail address are mandatory for applying for a finance application. If you do not have a valid email address, you will not be able to apply for the finance.

Eligibility Checker *This takes you to the Barclays secure gateway

Available finance options:

Months / APR Per month

Finance provider options available