Which Power Meter Fits An Easton Crankset?

By : Mr Mamil
Updated :

This site is supported by its audience. We may earn an affiliate commission when you purchase through links on this site.

Easton EC90 Crankarm
Easton EC90 Crankset

Looking to upgrade your Easton crankarms with a power meter but need help determining the suitable one?

Easton manufactures two crankarm models, EC90 SL (carbon) and EA90 (aluminum). There are two power meter options for these crankarms;

  • Spider-based
  • Pedal-based

In this article, we’ll explore the three options in detail.

Spider-based power meters

Power2max NG Road for Easton
Quarq DZero for Specialized crankarm

Three spider-based power meters fit an Easton EC90 or EA90 crankarm;

  • Power2max NG Road, top-of-the-line model, ±1% accuracy with temperature compensation and automatic zero offset.
  • Power2max NGeco Road is a mid-range and more affordable model with ±2% accuracy and uses a coin CR2450 battery.
  • Sigeyi AXO is the best budget option with features found in mid to high-end models.

Both Power2max models are available in 110 or 130 BCD for a 5-bolt chainring or 110-4S for a 4-bolt Shimano chainring. The Sigeyi AXO is only available in 110 BCD. The Sigeyi option would limit chainring sizes to 52/36T or lower.

ComparisonPower2max NG RoadPower2max NGeco RoadSigeyi AXO
Accuracy±1%±2%±1.5%
BCD110, 130, 110-4S*110, 130, 110-4S*110
Battery typeRechargeableCR2450Rechargeable
Battery lifeup to 150hup to 300h120 hours
Warranty2 years*2 years2 years
Price$940$390$338
Spider-based power meters for Easton EC90/EA90 crankset

Notes :

  • * 110-4S is for 4-bolt Shimano chainring.
  • ** Can be extended from 2 to 5 years for €150 (approx $155 / £131 / A$233).
More reading : Power2max NG Road vs NGeco Road Comparison

Pedal-based power meters

For pedal-based power meters, you can choose between;

  • Garmin Rally RS (Shimano) or RK (Look)
  • SRM Exakt
  • Favero Assioma

Pedal-based power meters are the easiest to install by just swapping out the existing pedals.

ComparisonGarmin RallySRM ExaktFavero Assioma DuoFavero Assioma Duo-Shi
Accuracy±1%±2%±1%±1%
Weight (pair)320g to 326g310g303gvaries**
ConnectivityANT+, BLEANT+, BLEANT+, BLEANT+, BLE
BatteryLR44/SR44RechargeableRechargeableRechargeable
Battery Life120 hours30 hours50 hours50 hours
Cleat typeShimano SPD-SLLook KeoLook KeoShimano SPD-SL
Pedal stack13.5mm10.5mm10.5mmvaries***
Q-factor53mm54mm54mm64/65mm****
Warranty1 year2 years2 years2 years
Price$1100 (dual)
$650 (left)
$1300 (dual)
$750 (left)
$759 (dual)
$495 (left)
$659 (dual)
Pedal-based power meters comparison for Easton crankset

Notes :

  • * Weight – Garmin Rally RS200 (320g), Rally RK200 (326g), Rally RS100 (160g), Rally RK100 (163g)
  • ** Weight depends on the Shimano pedal body used. The spindles weigh 198g/pair and 314g/pair when used with a Shimano R8000 pedal body.
  • *** Pedal stack depends on the Shimano pedal body used.
  • **** Q-factor – 65mm (Shimano R8000/R6800), 64mm (R550/R540)

Garmin Rally

Garmin Rally RS200 Power Meter
Garmin Rally RS200 Power Meter

The Garmin Rally is the latest power meter by Garmin, with four models.

  • RS200, dual-sided, Shimano SPD-SL cleats
  • RS100, left-sided, Shimano SPD-SL cleats
  • RK200, dual-sided, Look Keo cleats
  • RK100, left-sided, Look Keo cleats
More reading : Garmin Rally RS200 Review

SRM Exakt

SRM Exakt Power Meter
SRM Exakt Power Meter

The SRM Exakt is an SRM power meter built into a Look Keo pedal. It’s available in single-sided (left) or dual-sided options.

Favero Assioma

Favero Assioma Duo Power Meter
Favero Assioma Duo Power Meter

The Favero Assioma is available in three variants;

  • Assioma Duo, dual-sided, Look Keo cleats
  • Assioma Uno, left-sided, Look Keo cleats
  • Assioma Duo-Shi, dual-sided, Shimano SPD-SL cleats

The Favero Asisoma Duo-Shi is sold with pedal spindles only and without a pedal body. You’ll need to use an existing Shimano pedal and install it on the Favero Assioma Duo-Shi.

Compatible pedal bodies are the Shimano PD-R8000, PD-R7000, PD-6800, PD-R550, and PD-R540.