PowerTap C1 Chainrings

  • Only dual-sided power meter at this price point.
  • Conveniently mounts to the crank on your bicycle.
  • Motion-based electronics eliminates additional sensors.
  • Compatible with a wide range of alloy and carbon cranks.
    View our compatibility chart for more info.


  PowerTap.com orders ship within one business day.


Learn more about the C1 Chainrings >

$199.99 - $699.99

SKU: 30420


Bluetooth Smart
ANT+


THE ONLY THING THAT SHOULD NEED MODIFYING IS YOUR PAIN THRESHOLD.

The C1 chainring is a full featured, crank-based power meter that features dual-sided measurement. The FSA-made, one-piece chainring design provides added stiffness for shifting no matter the terrain. Available 53/39, 52/36 and 50/36 chainring tooth options for 5 bolt, 110 BCD cranks, the C1 mounts to existing hardware on the bike. Additionally, dual band ANT+ and Bluetooth SMART connectivity make the C1 an obvious choice for riders looking for more features and better value.

Learn even more about the C1 Chainrings.

  • Crank Interface: 5 bolt, 110 BCD compact
  • Connectivity: ANT+ and Bluetooth SMART
  • Tooth Combinations: 50/36, 52-36 and 53/39
  • Firmware Updates: Over the air
  • Added Weight: About 150 grams
  • Battery: CR2032
  • Battery Life: 200 hours

PowerTap 2 Year Warranty

We're proud to offer a 2 year warranty worldwide on all of our PowerTap branded power meters.

2 year warranty worldwide

REVIEW SNAPSHOT®

by PowerReviews
 
4.7

(based on 21 reviews)

Ratings Distribution

  • 5 Stars

     

    (17)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

85%

of respondents would recommend this to a friend.

Pros

  • Easy to use (17)
  • Durable (12)
  • Lightweight (8)
  • Versatile (6)

Cons

No Cons

Best Uses

  • Road bikes (15)
  • Long rides (9)
    • How would you rate the quality of this product?:
    •  
    • How would you rate the value of this product?:
    •  
    • Describe Yourself:
    • Competitive cyclist (8), Avid cyclist (7)
    • How old are you?:
    • 35 to 44 (8), 45 to 54 (7), 25 to 34 (4)
    • What is your gender?:
    • Male (20)
    • Was this a gift?:
    • No (15)

Most Liked Positive Review

 

Game Changer

I've been loyal to Powertap for over 8 years...Basically for 2 reasons. 1) I'm very hard on equipment and their stuff stands up to the test and 2) When I did...Read complete review

I've been loyal to Powertap for over 8 years...Basically for 2 reasons. 1) I'm very hard on equipment and their stuff stands up to the test and 2) When I did manage to break something, the service was completely outstanding..

I've got about 50 hours on my C1 now.

After 8 years of wheel based power, the transition was unbelievably simple.
I prefer shimano components, so I bought a compact ultegra crankset (6750) and paired the standard 53/39 rings to it.
Install took about 4 minutes... could not have gone any simpler.
It also paired right away to my garmin w no issues. I don't like the fact that you can only update the software with an iphone.. I don't have an iphone.

The manual says there is an hour or so 'break-in' phase, and they mean it.. readings were very erratic at first but I had faith in the manual.. Did some surges, and things came right in just like they were supposed to...

I've compared this to a couple other wheels and it seems spot on with readings...perhaps a little smoother reporting (maybe a little different data collection rate?) But man the thing goes on so easy, and seems to be just like all the other powertap stuff with precision and accuracy... You're gonna pay what for an SRM??? really?

I'll revise if something changes, but this thing is VERY cool so far.

VS

Most Liked Negative Review

 

Excellent performance marred by short battery life

The meter works great with my Garmin 520 and Ultegra cranks, but battery life has been about 50 hours not 200. I even bought a battery checker to make sure replacement is good....Read complete review

The meter works great with my Garmin 520 and Ultegra cranks, but battery life has been about 50 hours not 200. I even bought a battery checker to make sure replacement is good. A minor nuissance, but important to note. Replacement is easy.
The software you can download is not a great fit with the Garmin products. Would love to easily see more pedaling data.
The power data seems very consistent and works well in adapting to temps and good in wet weather, etc....
I bought this unit as most other inexpensive power meters do not play well with Trek Madone rear brake. I am happy with the C1, but with battery issues would have considered pedal based unit or swapped out brakes to allow for Stages to clear.
I would not be able to recommend if Stages meter would work on your frame.

Reviewed by 21 customers

Displaying reviews 1-10

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5.0

Love this product

By 

from Wisconsin

Pros

  • Durable
  • easy battery change
  • easy to update with App
  • Easy to Use
  • Lightweight
  • Outstanding Metrics
  • Versatile

Cons

    Best Uses

    • Long Rides
    • Road Bikes
    • Training
    • Triathalon training

    I was looking for a good power meter and the C1 was just being released. Never regretted the purchase. I have recommended to many of my friends.

    • Describe Yourself:
    • Avid Cyclist
    • How old are you?:
    • 45 to 54
    • What is your gender?:
    • Male
    • Was this a gift?:
    • No
    • How would you rate the quality of this product?:
    •  
    • How would you rate the value of this product?:
    •  
     
    5.0

    Fantastic Power Meter

    By 

    from Fredericksburg, VA

    Pros

    • Accurate
    • Easy to Install
    • Easy to Use
    • Reliable

    Cons

      Best Uses

      • Road Bikes

      I bought my Powertap C1 last Christmas. Over the past year it has changed (for the better) how I train and how I ride. I have enjoyed this product a great deal more than I thought I would.

      The power meter comes very neatly packaged and is simple to install. I found the YouTube videos Powertap has online to be helpful if you are a novice bike mechanic. Within minutes I had my old chainrings off and the C1 on. The pairing process was equally simple, I was able to find the ANT+ signal on my bike computer immediately. The same was true of the bluetooth signal for my phone.

      Every day use couldn't be easier, just start pedaling and it turns on and starts giving readings. This usually happens in less than 10 seconds of pedaling.

      I did have one issue that Powertap quickly addressed for me. The connection between the battery compartment to the rest of the electronics failed after a battery change. The support team worked with me to troubleshoot the issue. I ended up having to send the unit in and have the repair done at the factory. Turnaround was quick and I have not had the same issue again.

      I believe the product to be very accurate. I compare the power numbers between my C1 and a smart trainer regularly. Both are usually within a few watts. I do perform a zero offset on each ride.

      There are plenty of articles online about the benefits of training with power, and the C1 definitely helps you achieve those benefits. I would recommend this product to anyone that has a compatible crankset and wants to improve as a cyclist.

      • Describe Yourself:
      • Avid Cyclist
      • How old are you?:
      • 35 to 44
      • What is your gender?:
      • Male
      • Was this a gift?:
      • Yes
      • How would you rate the quality of this product?:
      •  
      • How would you rate the value of this product?:
      •  
       
      5.0

      Recommended - I would buy this product again.

      By 

      from Pittsburgh, PA

      Pros

      • Durable
      • Easy to install
      • Easy to Use

      Cons

      • Limited range of cranks and chain rings

      Best Uses

      • Road Bikes

      Easy to install, syncs up with my Garmin quickly, provides consistent results. If you aren't training with a Power meter you should be.

      • Describe Yourself:
      • Fitness Enthusiast
      • How old are you?:
      • 45 to 54
      • What is your gender?:
      • Male
      • Was this a gift?:
      • No
      • How would you rate the quality of this product?:
      •  
      • How would you rate the value of this product?:
      •  
       
      4.0

      My first move into power and could not be happier!

      By 

      from Waldwick, NJ

      Pros

      • Durable
      • Easy to Use
      • like the dual sided (L/R) power output

      Cons

      • minor issue with clearance on my Cervelo P2

      Best Uses

      • great power meter for my triathlon bike
      • Road Bikes

      Easy to install
      Easy Set-up with bike peripherals (trainers/ computers etc.)
      Good value power product if it is compatible with your bike

      • Describe Yourself:
      • Fitness Enthusiast
      • How old are you?:
      • 45 to 54
      • What is your gender?:
      • Male
      • Was this a gift?:
      • No
      • How would you rate the quality of this product?:
      •  
      • How would you rate the value of this product?:
      •  
       
      5.0

      Almost as easy as changing a wheel out

      By 

      from Bertram Iowa

      Pros

      • Durable
      • Easy to Use
      • Versatile

      Cons

        Best Uses

        • Commuting
        • Long Rides
        • Road Bikes

        I was really excited when my box arrived. I was even more excited that I was doing my 1st ride with my C1 chain rings about 5 minutes later. The ring swap was super easy and the black rings look great on my FSA crank. The directions that came with the product were very easy to follow. I would recommend these to anyone who can change an inner tube or turn an screw driver. Great option for someone who is not close to a bike shop.

        • Describe Yourself:
        • Competitive Cyclist
        • How old are you?:
        • 35 to 44
        • What is your gender?:
        • Male
        • Was this a gift?:
        • No
        • How would you rate the quality of this product?:
        •  
        • How would you rate the value of this product?:
        •  
         
        5.0

        Best investment ever for long races.

        By 

        from Roanoke, IN

        Pros

        • Durable
        • Easy to Use
        • Lightweight
        • Versatile

        Cons

          Best Uses

          • Long Rides
          • Road Bikes

          I've used my c1 in numerous 70.3 and 140.6 triathlons, and in the necessary preparation. I've found it to be consistent when checked with 3rd party software virtual/estimated power. It always reads about the same amount of watts lower than the estimated power on 3rd party software. I suppose that's a testament to the accuracy of the 3rd party software as well, however it lends some credibility to my c1. It has always been good to go, without any complications leaving T1, paired with my garmin 500. In cross-referencing wattage for accuracy, the dual ant+ and Bluetooth was a plus. I'm hopeful my wattage and race schedule will justify up-sizing the chain-rings when the time comes for new rings.

          • Describe Yourself:
          • Competitive Cyclist
          • How old are you?:
          • 25 to 34
          • What is your gender?:
          • Male
          • Was this a gift?:
          • No
          • How would you rate the quality of this product?:
          •  
          • How would you rate the value of this product?:
          •  
           
          5.0

          Great value, excellent product

          By 

          from Long Island, NY

          Pros

          • Durable
          • Easy to Use
          • Lightweight

          Cons

            Best Uses

            • Long Rides
            • Road Bikes

            I love this power meter. I was looking for left/right side data without spending a fortune on pedals. installation was super easy, although i did have my LBS install, to be safe. It also eliminates the need for a separate cadence sensor. As far as accuracy, I really have no way of knowing, other than comparing myself to my peers and their output for similar efforts. For an in depth review, I relied on DC Rainmaker (google it) for his super review on the product and comparison to hub based and pedal based systems. I chose this model because I only have one main bike, so it wasn't important to be able to move the meter from one bike to another. My components are Ultegra and I don't notice any difference in shifting on this chainring or the ultegra ring. I did have some initial problems reading the data from my garmin 500, but I'm pretty sure that was the garmin and not the chainring. It worked fine on every other head unit i tried. I finally got a garmin 820 anyway and it works great.

            • Describe Yourself:
            • Avid Cyclist
            • How old are you?:
            • 55 to 64
            • What is your gender?:
            • Male
            • Was this a gift?:
            • No
            • How would you rate the quality of this product?:
            •  
            • How would you rate the value of this product?:
            •  
             
            5.0

            Good product, excelent service

            By 

            from São Paulo, Brazil

            Pros

            • Easy to Use
            • Lightweight
            • Versatile

            Cons

            • Weak

            Best Uses

            • Long Rides

            I have my C1 for about 6 months (riding 2-3 days/week) and is working fine so far. Good reading for power and balance beteween right/left legs. Very easy to install too. The only thing that bothers me on the C1 is the cage that holds the batery that seems to be a little fragile.

            • Describe Yourself:
            • Competitive Cyclist
            • How old are you?:
            • 35 to 44
            • What is your gender?:
            • Male
            • Was this a gift?:
            • No
            • How would you rate the quality of this product?:
            •  
            • How would you rate the value of this product?:
            •  
             
            5.0

            Lover Powertap

            By 

            from Durham, UK

            Pros

            • Durable
            • Easy to Use
            • Versatile

            Cons

              Best Uses

              • Road Bikes

              I used to own a Powertap wheel but then decided to try a Stages crank. Big mistake! After 2 cranks developing battery problems, I came back to Powertap with a C1 chainring. I love it :-) It simultaneously transmits Bluetooth and ANT+, so I can connect to 2 training apps at the same time. Power data during one legged drills. L/R leg balance data. The only downside is that batteries sometimes only last a month.

              • Describe Yourself:
              • Competitive Cyclist
              • How old are you?:
              • 45 to 54
              • What is your gender?:
              • Male
              • Was this a gift?:
              • No
              • How would you rate the quality of this product?:
              •  
              • How would you rate the value of this product?:
              •  
               
              5.0

              Easy Install, Easy Pairing, Easy Data

              By 

              from Newark, CA

              Pros

              • Durable
              • Easy to Use
              • Lightweight
              • Versatile

              Cons

                Best Uses

                • Commuting
                • Long Rides
                • Mountain Bikes
                • Road Bikes

                My PowerTap C1 Chainring Power Meter arrived within a few days of ordering. I opted to install it myself even though I'd never installed a chainring before. The directions made it easy. The only really special tool required for my installation was a torque wrench which I ready owned. The whole process took just over an hour. If you're not mechanically incline, installation will be no problem for your local bike shop.
                Once installed, the PowerTap C1 Chainring paired with my Edge 1000 in under a minute. There were my power readings. Once I reconfigured the screens on my bike computer, I could see left and right leg percentages, total power, etc. I used to have a single side power meter. Now I had data for right and left legs. Next paired with my virtual training software, CycleOps Virtual Training in my case using an ANT+ stick on my computer. Also had no trouble using Blue-tooth to connect to the PowerTap Mobile App on my iPhone.
                Now I've done a number of rides, both inside and out, with my PowerTap C1 Chainring Power Meter. it pairs with my cycling computer, phone or computer with no fuss. Easy to zero. I have the PowerTap Mobile App to keep the firmware updated.
                For a technical item the PowerTap C1 Chainring Power Meter is a breeze to install, setup and use. I'm still learning how to use all that data. I've set up a training program with the training software, tested my FTP power and have started a more logical and measured training program to meet my cycling goals.
                All this at a great price for a complete power meter that gives total power as well as individual power for each leg. All that and it looks great on my bike too!
                Happy PowerTap C1 Chainring Power Meter customer.

                • Describe Yourself:
                • Avid Cyclist
                • How old are you?:
                • 55 to 64
                • What is your gender?:
                • Male
                • Was this a gift?:
                • No
                • How would you rate the quality of this product?:
                •  
                • How would you rate the value of this product?:
                •  

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                Already have this product and need technical support?

                Get In Touch with Our Customer Support

                Do you have questions about this product?

                Get answers from real customers and in-house experts with AnswerBox.

                202 Questions | 203 Answers
                Displaying questions 1-10Previous | Next »
                • Q:

                  I have an older FSA Sl-k Light 5arm BB30crankset (110BCD). I seem to recall that there once was a listing for it .
                  Would the C1 be compatible with that.
                  Thanks
                  Asked on 3/13/2017 by thomas from New Hampshire

                  1 answer

                  • Staff Reviewer

                    A:

                    Unfortunately it's not compatible

                    Answered on 3/15/2017 by Anonymous
                • Q:

                  Your web site says the C1 is "Only dual-sided power meter at this price point". Yet you also say it does not support left right balance. Does it just average the two power inputs?, Are you going to produce a device that does give the balance?
                  Asked on 1/7/2017 by Tony from Buckinghamshire, UK

                  1 answer

                  • Staff Reviewer

                    A:

                    Dual sided meaning that it will account for reading power from both legs, but does not record this data independently just like the Hub.

                    Answered on 1/11/2017 by Eric from SCG
                • Q:

                  Hi,I have a C1 with a Polar M450 head unit, I can see the power and cadence but can't perform a manual zero, no facility for this on the Polar that I can find, will this effect the accuracy?
                  Is there another way to do this?
                  Thanks
                  Asked on 1/7/2017 by spencer from Worthing, England

                  1 answer

                  • Staff Reviewer

                    A:

                    It could, do you have an iPhone where you could install our powertap mobile app? That would give you an easy way to zero the C1

                    Answered on 1/11/2017 by Eric from SCG
                • Q:

                  With the onset of 1x road and cyclocross group-sets any chance 1x specific C1 chain-rings may come out soon? I've seen in the FAQ that interference doesn't allow less then a 50 tooth currently but would a 1x allow the space needed to get down towards 40 teeth?
                  Asked on 12/20/2016 by David from Colorado

                  1 answer

                  • Staff Reviewer

                    A:

                    We are looking into how we can adapt the current C1 sensor to a 1X setup, stay tuned.

                    Answered on 1/11/2017 by Eric from SCG
                • Q:

                  really nice & innovative product. Will you be supporting 4x arm asymmetric kranks in the future? If so, when? Ultegra 6800 is quite popular imho ;-)
                  Asked on 12/8/2016 by ThomasL from Duisburg, Germany

                  1 answer

                  • Staff Reviewer

                    A:

                    we are looking into other options but nothing more than the 5 bolt 110 BCD at the moment.

                    Answered on 1/11/2017 by Eric from SCG
                • Q:

                  What is the accuracy of the C1 chainrings power measurement? I did not see that listed
                  Asked on 11/23/2016 by TonyG from Salisbury, NC

                  1 answer

                  • Staff Reviewer

                    A:

                    It's +/- 1.5%

                    Answered on 1/11/2017 by Eric from SCG
                • Q:

                  i have a shimano sora 9 speed with 50-34t chainrings, will the 50-36t powertap chain ring will work?
                  Asked on 11/21/2016 by Lawrence from Canada

                  1 answer

                  • Staff Reviewer

                    A:

                    Should work.

                    Answered on 1/11/2017 by Eric from SCG
                • Q:

                  Is it possible to transmit real time data to a PC while you are riding via an ANT+ or Bluetooth? Or, must you transmit to a cycling computer then download later?
                  Asked on 10/28/2016 by BeetleATC from Clayton, NC

                  1 answer

                  • Staff Reviewer

                    A:

                    Sure, there are many cycling apps like virtual training that can collect this data.

                    Answered on 1/11/2017 by Eric from SCG
                • Q:

                  Do the 53-39 chain rings work with SRAM force 10spd 130 bcd? Thank you
                  Asked on 10/28/2016 by G from Chicago, IL

                  1 answer

                  • Staff Reviewer

                    A:

                    Sorry no they will not.

                    Answered on 1/11/2017 by Eric from SCG
                • Q:

                  When chainrings are worn out with normal use, FAQ say I can replace the power pod unit myself as long as the chainring size is same. BUT FAQ also states re-calibration is recommended in the factory.

                  If the factory re-calibration is not done, what will happen? If it is not that severe, just doing myself will be OK?

                  And Is there any DIY guide about replacement? If it be, that will helpful. please let the users have it.

                  Thank you.
                  Asked on 10/12/2016 by RO

                  1 answer

                  • Staff Reviewer

                    A:

                    They can be replaced but are sensitive to proper installation. If you don't have access to a precice torque wrench it's best that you have us do the replacement for you.

                    Answered on 1/11/2017 by Eric from SCG
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