Your Vision Trimax crankset can either be BB30 or PF86.
If it’s BB30 you can install the Stages FSA SL-K BB30 Power Meter.
Please note, whenever you are installing a left side power meter crank arm, you need to confirm you have 10mm of clearance between the left crank arm and the chainstay in order for the sensor to clear. Please see the image below.
If your crankset is PF86, unfortunately there is not a Stages power meter that will fit.