The max % incline a trainer can simulate:
25% Max Incline:
Tacx NEO 2T Smart
Tacx NEO 2 Smart
Tacx NEO Bike
Tacx NEO Bike Plus
Tacx NEO Smart
16% Max Incline:
Tacx Flux 2 Smart
10% Max Incline:
Tacx Flux S Smart
Tacx Flux Smart
6% Max Incline:
Tacx Flow Smart
NOTE: This value is calculated with a body weight of 143lbs (65 kg) in reference to the "strength" of the resistance unit when cycling 6 mph (10 km/h). It is important to understand that when your body weight is higher, the maximum incline the trainer is able to simulate will be lower. This does not include the weight of your bike which will also have an effect on the maximum incline.