Valve springs are used in conjunction with retainers in order to take the impact of running high RPMs. When purchasing camshafts or looking to increase the revs of your motor, a set of valve springs and retainers should be purchased. Single and double wound valve springs are designed for high stress and have a high resistance to vibrational contact and harmonic wear from the motor.
Which brand is dependable for valve springs?
Skunk 2 makes quality valve springs.