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I have a Shimano road crankset. What power meter will work for me?

Well the good news is…you have a lot of options. I guess this is also the bad news as it can make deciding more difficult! 🙂 Ok, here goes:

 

Left Crank Arm Power Meter

4iiii and Stages Cycling both make left crank arm power meters for Shimano R7000, Ultegra R8000/8100 and DURA-ACE 9100. With these power meters, you simply swap out your current left crank arm for the new power-equipped one and you are good to go. If you have a different version of Shimano crankset (RS510, Tiagra, etc.), in most cases you can still install one of these crank arms. You just need to make sure your crankset uses the Shimano Hollowtech II Standard. These cranksets can be identified by two pinch bolts securing the left crank arm to the spindle. (Contact us if you have questions on this).

4iiii Left Crank Arm Power Meters

4iiii PRECISION Shimano R7000 Power Meter

4iiii PRECISION Shimano R7000 Power Meter

4iiii PRECISION Shimano R7000 Power Meter

4iiii PRECISION Shimano Ultegra R8000 Power Meter

4iiii PRECISION Shimano Ultegra R8000 Power Meter

4iiii PRECISION Shimano Ultegra R8000 Power Meter

4iiii PRECISION Power Meter For Shimano DURA-ACE 9100

4iiii PRECISION Power Meter For Shimano DURA-ACE 9100

4iiii PRECISION Power Meter For Shimano DURA-ACE 9100

Stages Left Crank Arm Power Meters

Stages Shimano 105 R7000 Power Meter

Stages Shimano 105 R7000 Power Meter

Stages Shimano 105 R7000 Power Meter

Stages Shimano Ultegra R8000 Power Meter

Stages Shimano Ultegra R8000 Power Meter

Stages Shimano Ultegra R8000 Power Meter

Stages Shimano Ultegra R8100 Power Meter

Stages Shimano Ultegra R8100 Power Meter

Stages Shimano Ultegra R8100 Power Meter

Stages Shimano DURA-ACE 9100 Power Meter

Stages Shimano DURA-ACE 9100 Power Meter

Stages Shimano DURA-ACE 9100 Power Meter

Stages Shimano DURA-ACE 9200 Power Meter

Stages Shimano DURA-ACE 9200 Power Meter

Stages Shimano DURA-ACE 9200 Power Meter

Please note however, if you are mixing and matching crank arms (like a Stages R7000 power meter crank arm on a Shimano Tiagra crankset), the color of the crank arms won’t be exactly the same (a cosmetic issue only), but most customers are ok with this.

Please note, these power meters attach a sensor to 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 10 mm of clearance for Stages and 4iiii PRECISION 2 power meters and 8 mm of clearance for 4iiii PRECISION 3 power meters. Also, please make sure that you don’t have a bottom bracket mounted rear brake (used on some aero and TT bikes). Please refer to the image below.

The clearance between the frame and left side power meter crank arm

Pros: Affordable, easy to install, don’t have to change crankset
Cons: Measures left leg power only

 

Crankset Power Meter (Spider Based)

There are several great power meter cranksets we recommend for Shimano users.

power2max ROTOR ALDHU Road Power Meter Crankset

power2max NGeco ROTOR ALDHU Road Power Meter Crankset

power2max NGeco ROTOR ALDHU Road Power Meter Crankset

This is a new crankset (power meter spider, crank arms and spindle), excluding chainrings. power2max makes wonderful power meters. They measure both left and right leg power, are reasonably priced and are as good as it gets in terms of reliability. If you select the 24MM spindle option, it will fit your current bottom bracket exactly like your Shimano crankset (no need to change bottom brackets). In addition, if you select the Shimano 4-Bolt spider, you can also use your Shimano rings on it. This makes it a direct replacement for your Shimano crankset.

ROTOR INspider ALDHU Road Power Meter Crankset

ROTOR INspider ALDHU Road Power Meter Crankset

ROTOR INspider ALDHU Road Power Meter Crankset

This too is a new crankset (power meter spider, crank arms and spindle) and can be purchased with or without chainrings. The INspider measures both left and right leg power, comes in a variety of crank arm lengths and can be set up in a 1X or 2X chainring configuration. This power meter can also be purchased with a 24MM spindle so it will fit your current bottom bracket without any changes. You can use your current Shimano chainrings on it or buy new ROTOR rings.

Quarq DFour DUB Power Meter

Quarq DFour DUB Power Meter

Quarq DFour DUB Power Meter

Like the power2max above, this is spider-based crankset and it’s a wonderful option as well. You would purchase the DFour Power Meter spider as well as Quarq DZero DUB crank arms. At $595, this is quite a bargain for a high-end power meter and carbon crankset. Unlike the power2max however, you must change your bottom bracket. Specifically, the DFour requires a SRAM DUB Bottom Bracket. They are relatively inexpensive, but it does make installation a bit more involved.

The power meter is designed for use with Shimano DURA-ACE 9100 chainrings. Shimano Ultegra R8000 chainrings and 105 R7000 rings will work, however they will not match the shape or color of the power meter as nicely.

Pros: Moderately priced, VERY reliable, measures both legs
Cons: Have to change your crankset

 

Crankset Power Meter (Crank Arm Based)

In addition to making left side crank arms for Shimano, 4iiii and Stages also make complete dual-sided cranksets. With these power meters, you get a new Shimano crankset with a power sensor attached to the inside of the left and right crank arm. Therefore, they are able to measure power from both legs as well as tell you how much power each leg is producing individually.

Please note, as with the left side power meters above, you need to confirm you have 10mm of clearance between the left crank arm and the chainstay in order for the sensor to clear.

4iiii Crankset Power Meters

4iiii PRECISION PRO Shimano R7000 Dual-Sided Crankset

4iiii PRECISION PRO Shimano R7000 Dual-Sided Crankset

4iiii PRECISION PRO Shimano R7000 Dual-Sided Crankset

4iiii PRECISION PRO Shimano Ultegra R8000 Dual-Sided Crankset

4iiii PRECISION PRO Shimano Ultegra R8000 Dual-Sided Crankset

4iiii PRECISION PRO Shimano Ultegra R8000 Dual-Sided Crankset

4iiii PRECISION PRO Shimano DURA-ACE 9100 Dual-Sided Crankset

4iiii PRECISION PRO Shimano DURA-ACE 9100 Dual-Sided Crankset

4iiii PRECISION PRO Shimano DURA-ACE 9100 Dual-Sided Crankset

Stages Crankset Power Meters

Stages Shimano Ultegra R8000 Dual-Sided Crankset

Stages Shimano Ultegra R8000 Dual-Sided Crankset

Stages Shimano Ultegra R8000 Dual-Sided Crankset

Stages Shimano DURA-ACE 9100 Dual-Sided Crankset

Stages Shimano DURA-ACE 9100 Dual-Sided Crankset

Stages Shimano DURA-ACE 9100 Dual-Sided Crankset

Please note, these power meters attach a sensor to 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 10 mm of clearance for Stages and 4iiii PRECISION 2 power meters and 8 mm of clearance for 4iiii PRECISION 3 power meters. Also, please make sure that you don’t have a bottom bracket mounted rear brake (used on some aero and TT bikes). Please refer to the image below.

The clearance between the frame and left side power meter crank arm

Pros: Measures both legs, provides independent left/right power
Cons: More expensive

 

Power Meter Pedals

Power meter pedals can be installed on any crankset. We have several models to choose from.

Pros: Easy to install, works on any bike, can move from bike to bike, don’t have to change crankset
Cons: None

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