For Brompton What is a Kinetic trainer for? A trainer that allows you to cycle indoors day or night, rain or shine. These Kinetic trainers are specially configured for Brompton bike. If you are interested to have it for your big-wheel bikes (20'' and above), you can purchase it with the upgrade kit! Cycling Tips, Cycling Workout, Night Rain, Indoor Cycling, Big Wheel, Brompton, Spin, Trainers, Bicycle