4iiii Precision 3.0 Left Crank Arm Power Meter - Shimano Ultegra 8000

5 out of 5 Customer Rating

The Details

Meet the new and upgraded PRECISION 3 power meter from 4iiii, designed to allow you to train with accurate and reliable data and take your cycling to the next level. The PRECISION 3 is the only crank-based powermeter which uses 3 strain gauges to measure all the forces from your pedal stroke, giving you the most accurate power reading for every pedal stroke. 

The PRECISION 3 is compatible with ANT+ and Bluetooth, so you can utilise this powerful tool outside with a cycling computer or along with your favourite indoor training app to get the most from your workout, with up to 800 hours of riding time and +/- 1% accuracy to keep you pedalling happily. PRECISION Ride Ready comes installed on a brand new Shimano R8000 Ultegra left crank, which fits bottom brackets which use the Hollowtech II interface. A new profile means that this power meter fits more bike frames than ever before due to the new ultra low profile design. 

NOTE: check your frame clearance before ordering by downloading and printing the compatibility guide.

Our Verdict

Durable, lightweight and incredibly precise, the 4iiii Ultegra R8000 Crank Arm with PRECISION 3 technology is a great companion for those looking for power data on the bike!

Industry Reviews

rutland-cycling-review-logo

"4iiii Precision 3 Power Meter is accurate and easy to live with. A longer battery life than previous models means fewer battery swaps, and the consistent data makes it easy to train with on a daily basis"

Read Full Review >

Key Specifications

  • Simple configuration using mobile app or cycling computer
  • +/- 1% accuracy
  • Ultra low profile, improved clearance for bike frames
  • Compatible with ANT+ and Bluetooth devices
  • Power range: 0-4000W
  • Cadence range: 30-70RPM
  • Battery: CR2032 lithium coin cell, up to 800 hours of riding on one battery
  • Waterproof, IPX7 waterproof rating
  • 3 year warranty 

Delivery

Parts, accessories and clothing delivery - FREE over £30

Delivery for parts, accessories and clothing is free over £30 and £2.99 below that. We have a selection of premium delivery services available, including next day, AM, Saturday, timed delivery and local pickup services. Mainland UK only, some remote and off-shore areas or areas of Scotland may incur a surcharge. Delivery options and lead time estimates will be provided in checkout.

Click & Collect

Our Click & Collect service offers all the benefits of shopping online, combined with an award-winning retail experience in one of our stores. Simply order your items, select Click & Collect and pick up your item at a time that's convenient for you - our stores are open 7 days a week. Best of all, the service is completely free.

Reviews

Your Questions Answered

Meet the new and upgraded PRECISION 3 power meter from 4iiii, designed to allow you to train with accurate and reliable data and take your cycling to the next level. The PRECISION 3 is the only crank-based powermeter which uses 3 strain gauges to measure all the forces from your pedal stroke, giving you the most accurate power reading for every pedal stroke. 

The PRECISION 3 is compatible with ANT+ and Bluetooth, so you can utilise this powerful tool outside with a cycling computer or along with your favourite indoor training app to get the most from your workout, with up to 800 hours of riding time and +/- 1% accuracy to keep you pedalling happily. PRECISION Ride Ready comes installed on a brand new Shimano R8000 Ultegra left crank, which fits bottom brackets which use the Hollowtech II interface. A new profile means that this power meter fits more bike frames than ever before due to the new ultra low profile design. 

NOTE: check your frame clearance before ordering by downloading and printing the compatibility guide.

  • Simple configuration using mobile app or cycling computer
  • +/- 1% accuracy
  • Ultra low profile, improved clearance for bike frames
  • Compatible with ANT+ and Bluetooth devices
  • Power range: 0-4000W
  • Cadence range: 30-70RPM
  • Battery: CR2032 lithium coin cell, up to 800 hours of riding on one battery
  • Waterproof, IPX7 waterproof rating
  • 3 year warranty 

Durable, lightweight and incredibly precise, the 4iiii Ultegra R8000 Crank Arm with PRECISION 3 technology is a great companion for those looking for power data on the bike!

rutland-cycling-review-logo

"4iiii Precision 3 Power Meter is accurate and easy to live with. A longer battery life than previous models means fewer battery swaps, and the consistent data makes it easy to train with on a daily basis"

Read Full Review >

Parts, accessories and clothing delivery - FREE over £30

Delivery for parts, accessories and clothing is free over £30 and £2.99 below that. We have a selection of premium delivery services available, including next day, AM, Saturday, timed delivery and local pickup services. Mainland UK only, some remote and off-shore areas or areas of Scotland may incur a surcharge. Delivery options and lead time estimates will be provided in checkout.

Click & Collect

Our Click & Collect service offers all the benefits of shopping online, combined with an award-winning retail experience in one of our stores. Simply order your items, select Click & Collect and pick up your item at a time that's convenient for you - our stores are open 7 days a week. Best of all, the service is completely free.

Finance your purchase with us today and spread the cost.

Purchase Price £375.00
Need some help? Speak to our sales team

All of our finance options are available online with no deposit, however if you would like to pay a deposit then you can speak to our helpful sales team who will arrange this and process your application for you.


🔒NEW Security checks

In conjunction with Novuna, we have recently implemented additional security checks as part of our online finance process. These additional checks may require you to submit photo ID when placing a finance order, so remember to watch out for emails from Novuna which may request this additional information.

Available Finance Options
Duration (months) Interest Rate (p.a. fixed) Monthly Payments Amount of Credit Total Repayable Deferral period
12 months 15.9 % APR £33.82 £375.00 £405.84 0.0
24 months 15.9 % APR £18.16 £375.00 £435.84 0.0
36 months 15.9 % APR £12.98 £375.00 £467.28 0.0
48 months 15.9 % APR £10.41 £375.00 £499.68 0.0
36 months 16.9 % APR £14.02 £375.00 £504.72 6

Rutland Water Cycling LTD (Reference number: 800269) trading as Rutland Cycling are an appointed representative of Specialized (UK) Retail Limited (Reference number: 976130) which is authorised and regulated by the Financial Conduct Authority for credit broking. Credit is subject to status and affordability, and is provided by Mitsubishi HC Capital UK PLC. Terms & Conditions Apply.