Big Stocks & Big Sales
PowerMeterCity have stocked up for a massive sale on popular 4iiii crank arms. So this is a genuine 25% off sale with a great chance to bag a year-best deal. Unusually high discounts for the early season.
In the UK CyclePowerMeters offer 10% off 4iiii with the code the5krunner10.
The cranks in question are stacked with the 4iiii Precision on the Shimano 105 5800, Shimano Ultegra 6800 and Shimano 9000 arms.
Sale: Links to PowerMeterCity.com
Cranks represent a great chance to get an accurate and robust piece of kit. If you are going down the single-sided route then a left-side crank is probably nearly as easy to change as a pair of power meter pedals…but CHEAPER.
4iiii’s solutions definitely rank them in the best power meter guide.
Cranks are a GREAT, low-risk and inexpensive way for newbies to powermeters to quickly get into the game.
Many people historically have gone down the STAGES route for cranks but much of that choice of STAGES and their volume of sales probably came down to their marketing association with Team SKY. Personally I’d go for power meter pedals but if I went for a crank-based solution it would be 4iiii.
The standout feature for me with 4iiii is the accuracy of their power meter.
Indeed, for accuracy (error) 4iiii wins:
- Stages 2%
- 4iiii 1%
Price
For the entry-level Shimano 105 cranks the sale price is $360
Sale: Links to PowerMeterCity.com
Last Updated on 17 January 2026 by the5krunner
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- Garmin 90-degree charging adapter — the small adapter that keeps your charging cable tidy at the stem. Essential for race day.
- Garmin charging puck — the fastest and most reliable way to top up your Garmin before a session.
- Ravemen FR300 — front light that mounts directly under your Garmin or Wahoo head unit. Keeps your bars clean and your beam pointed where it matters.
- Garmin Varia RTL515 — radar rear light that alerts you to vehicles approaching from behind. Pairs with your Edge or Garmin watch.
- Stryd — the footpod that brings running power to your Garmin. The single most useful running upgrade I have made.
- Favero Assioma Pro RS2 — the power meter pedals most serious cyclists end up choosing. Accurate, easy to move between bikes.
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tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. ID
