Lever Kits can refer to various automotive parts or repair kits that involve levers or lever mechanisms used in cars and trucks. Clutch Lever Kits: In manual transmission vehicles, the clutch system uses a lever mechanism to disengage the clutch when shifting gears. Lever kits for this system might involve the clutch pedal lever or components attached to it. Lever kits in this context could include upgraded or replacement parts for manual or automatic gear shifting mechanisms.