Rotax Valve Hood Fixing Spring - Land 17 This high-strength steel spring ensures firm and secure holding of the hood of your exhaust valve. Original room RotaxIt guarantees the pressure necessary for the valve system to operate constantly, thus avoiding the untimely openings or the compression losses.

TheM8 base nut is the attachment element that engages the cylinder at the bottom motor (housing). On an engine Rotax Max, there are four, positioned at the corners of the base. Their role is to maintain a constant pressure on the base gasket to ensure the sealing and absorb explosion and vibration constraints.