1. Can I get the power meter only or do I need a crank with it?
At power2max, we offer power meters to add to your existing crankset and also offer complete cranksets with power meters. If you already have one of the following cranks on your bike you only need a Power2max power meter and can use your existing crank:
- Rotor 3D, 3D30, 3D+, or 3DF
- Specialized S-Works or FACT
- Cannondale Hollowgram SI, SISL, or SISL2
- SRAM S900, S950, Force22, and Rival22
If the crank spider (the part connecting the crank arm to the chain rings) is part of the crank arm, then you need a power meter with cranks. We have a great range of options to choose from, from the entry level Power2max Type S FSA Gossamer to the high-end Power2max Type S Campagnolo.
2. Which model is right for me?
When you decide on your new power meter, you should keep the following things in mind:
- What bottom bracket format does my frame have? Not all cranks fit in all frames. Please check what type of bottom bracket standard your bike has and then use the filter function on the power meter page to find the right crank. The most popular frame formats currently are BSA (with external bottom bracket), BB30/PF30 (bearings in the frame, 30 mm axle), and BB86 (bearings in the frame, 24 mm axle)
- Which crank length should I choose? Check how long your current cranks are. Our blog entry on crank lengths can also help you with your choice. The filter function on the right of the power meter page helps you identify cranks that come in the length you need.
- Weight and design: Finally you need to choose which model you like best and whether you prefer a more affordable, but slightly heavier, model or a super light high-end model.
3. Which Bolt Circle Diameter (BCD) should I choose?
Next you need to choose which version you want to use. A good starting point is to check what you currently have on your bike:
For road bikes:
Here you can choose between 110 BCD (Compact) and 130 BCD (Classic).
- If you choose Compact the smallest possible chain ring is 34 teeth, which makes climbing easier. Most big chain rings are available up to 52 teeth
- If you choose 130 BCD the smallest possible chain ring is 38 teeth, but big chain rings are available up to 56 teeth (and in some cases, even bigger). 130BCD is often chosen by strong riders and for time trialling.
For mountain bikes:
You can choose between 1x and 2x configurations. The filter function will help you find the right version.
4. Which accessories do I need?
Finally you need to choose the right accessories:
- The right chain rings if you are not using your existing chain rings (important: check that you have the right BCD!)
- Chain ring bolts (if you are not using your existing ones)
- Corresponding bottom bracket (you will find information on compatible bottom brackets in the product description of each power meter)
- ANT+ compatible bike computer with power function
5. Install and start using
Once you have received your Power2max you only need to install it and can start using it! In the support section you find a video that shows how easy installation is.
Enjoy your new Power2max!