Clutch Kit Clutch Pro KBM24021 JR41 Reinforced pressure tubing Type:ZF S5D Petrol Reinforced pressure tubing The fresh air valve allows for incoming charged fresh air from the turbo to be diverted safely into the exhaust manifold pre turbine wheel with the throttle at low opening angles to allow for safer spooling of the turbocharger without the potentially damaging throttle based late combustion event style anti lag that can induce high engine stresses and break connecting rods clutch components Clutch Pro has a reputation throughout Australia and now in Europe for supplying the highest quality original equipment type clutch kits