Spring mod for Fanatec ClubSport throttle/accelerator pedals, fits v1, v2 and v3 ClubSport pedals. Come with two plastic end caps that protect the pedals and ensure the spring is correctly seated These springs can add a bit more resistance if the default pedal set up is too light for you. Fits v1, v2, v3 although Clubsport v3 pedals do come with a variety of springs offering similar resistance. Blue Spring - The stiffest option for those who like plenty of resistance in the throttle pedal. Yellow Spring - Lighter, offers more resistance than the default throttle pedal set up but not as stiff as the blue spring.