The following is a list of cranks that are currently incompatible with 4iiii Powermeters. A crank is deemed incompatible for various reasons including shape, if it has a concave channel on the inside of the crank arm, if it has been tested and failed to produce consistent and predictable behaviour to ensure the powermeter will function accurately within its +/- 1% accuracy tolerance, or if it has yet to be tested.
For a list on current compatible cranks, refer to our Product Finder or the article below:
Crank Compatibility Master List - Factory Install
Currently Incompatible Cranks
| Make | Model | Alternative Option |
| Cane Creek | All | Crankset replacement for compatible crank |
| Cannondale | One | Crankset replacement for compatible crank |
| Si | Crankset replacement for compatible crank | |
| e*thirteen | All | Crankset replacement for compatible crank |
| Easton | All | Crankset replacement for compatible crank |
| FSA | Gossamer | Crankset replacement for compatible crank |
| Omega | Crankset replacement for compatible crank | |
| Vero Pro | Crankset replacement for compatible crank | |
| Quarq | All | Crankset replacement for compatible crank |
| RaceFace | All | Crankset replacement for compatible crank |
| Cinch | Crankset replacement for compatible crank | |
| Turbine | Crankset replacement for compatible crank | |
| Rotor | All | Crankset replacement for compatible crank |
| Shimano | RS-500/510 | 105 R7000 directly compatible, Hollowtech II BB |
| Tiagra | 105 R7000 directly compatible, Hollowtech II BB | |
| Sora | 105 R7000 directly compatible, Hollowtech II BB | |
| CX50 | 105 R7000 directly compatible, Hollowtech II BB | |
| GRX 600 | GRX 800 directly compatible, Hollowtech II BB | |
| Specialized | S-Works | Contact Specialized to purchase Specialized Power Cranks |
| SRAM | Apex | Crankset replacement for compatible crank |
| GX | Crankset replacement for compatible crank | |
| NX | Crankset replacement for compatible crank | |
| X1 | Crankset replacement for compatible crank | |
| SX | Crankset replacement for compatible crank | |
| S200 | Crankset replacement for compatible crank | |
| X5 | Crankset replacement for compatible crank | |
| Omnium | Crankset replacement for compatible crank | |
| THM | Clavicula SE | Crankset replacement for compatible crank |
| Truvativ | All | Crankset replacement for compatible crank |