Short description: Original or compatible cylinder base seal, specially designed for engines Rotax Max (EVO, DD2, DD2 EVO, Micro, Mini, Junior, Senior). Essential piece to seal between the cylinder and the engine crankcase, ensuring optimal performance and long service life to your engine.

Cylinder base seal original Rotax, specially designed for engines Rotax Max (EVO, DD2, DD2 EVO, Micro, Mini, Junior, Senior). Essential piece to seal between the cylinder and the engine crankcase, ensuring optimal performance and long service life to your engine.

Cylinder base seal original Rotax, specially designed for engines Rotax Max (EVO, DD2, DD2 EVO, Micro, Mini, Junior, Senior). Essential piece to seal between the cylinder and the engine crankcase, ensuring optimal performance and long service life to your engine.

Cylinder base seal original Rotax, specially designed for engines Rotax Max (EVO, DD2, DD2 EVO, Micro, Mini, Junior, Senior). Essential piece to seal between the cylinder and the engine crankcase, ensuring optimal performance and long service life to your engine.

Cylinder base seal original Rotax, specially designed for engines Rotax Max (EVO, DD2, DD2 EVO, Micro, Mini, Junior, Senior). Essential piece to seal between the cylinder and the engine crankcase, ensuring optimal performance and long service life to your engine.

Rotax exhaust valve stud - 6 x 30.5 x 12 mm Guarantee the fluid movement of your valve with this original stud Rotax. With its precise dimensions of 6x30,5x12 mm, it ensures a perfect guidance of the guillotine, avoiding any blocking and optimizing the performance of your engine to all the regimes.

Original part Rotax

Theguillotine O-ring 6 x 2,5 mm Rotaxis an original manufacturer part for the engine exhaust valve system (guillotine) Rotax Two times.

It ensures perfect sealing of the valve mechanism and ensures optimal operation of the exhaust opening system.

The exhaust valve gasket is an essential part guaranteeing the perfect sealing of the valve system on the rotax motors. It ensures optimal operation of the exhaust valve and preserves motor performance.

The Guillotine body (n ° 7) is the fixed part that screws on the cylinder and in which the movable guillotine slides. It is it that ensures the maintenance of the entire valve system (bellows, spring, cap). If this part is dirty or distorted, the valve can no longer rise and descend freely, which brides the engine performance.

Rotax Screw BTR M6x16mm

The Circular membrane spring (70 x 1.7 x 0.3 mm) is the metal voltage ring that ensures the maintenance and tightness of the orange bellows base on the valve body. Its precise dimensions ensure a uniform pressure on the entire circumference of the membrane, condition sine qua non to the proper functioning of the pneumatic system.

spare parts origin

idem for Evo

spare parts origin

 Rotax Circular spring of membrane 134x3,0x0.65mm

The Support spring is housed between the valve piston and the black adjustment cap. Its role is to exercise a constant reminder force on the guillotine to keep it in the low position. It is the resistance of this spring that defines when (which engine speed) the pressure of the gases will be able to lift the valve to release the power.

The Adjustment screw, located at the top of the valve hood, is the direct interface between the driver and the engine. By screwing it or by unscrewing it, the preload of the internal spring is modified, which defines which precise regime will open to release all the power of the Rotax.

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.

The 64x2mm O-ring is the internal seal located between the dome of the cylinder head and the cylinder. Its precise dimensions (64 mm inner diameter and 2 mm thick) are designed to fit perfectly into the cylinder groove, preventing the cooling liquid from seeping into the combustion chamber.

The Cylinder head Rotax MAX / DD2 is the red upper piece that seals the high engine. She is 100% compatible with the entire 125cc range from Rotax, including direct socket motors (MAX) and two-speed engines (Dd2). It ensures the circulation of the coolant around the combustion dome for perfect thermal stability.

The M8 Stop Washer (N ° 21) is a security technical washer placed between the nut and the cylinder base. Its role is to prevent any inconvenient loosening of the high engine mount nuts. On the DD2 motor, where the vibrations and transmission stresses are important, it is essential to ensure the integrity of the motor block.

The Screw th m8x30mm (n ° 22) is a high-quality hexagonal head screw used to bridge the cylinder on the motor housing of the Rotax Dd2. With its length of 30 mm and its thread M8It ensures a solid grip in the low engine nets. She works in pairs with the stop washer (n ° 21) to ensure that the cylinder remains perfectly motionless despite repeated explosions.

This precision O-ring (dimensions)23,3 x 2,4 mm) is an original partRotax. It ensures the perfect sealing between the well of bougie and your engine's head (buckle cover) Rotax Max. A worn or pinched seal can cause coolant leaks or dirt infiltration into the combustion chamber.

The Cylinder head seal 105 x 2.5 mm is the large peripheral O-ring that ensures the sealing of the cooling circuit between the cylinder and the red cylinder head. Designed according to the strict standards of RotaxIt supports high pressures and extreme thermal variations, ensuring that the cooling liquid remains perfectly confined in its circuit.

The Red cylinder head (ref. Rotax 211225) is the upper structural element that closes the high engine cooling circuit. Real visual signature of engines RotaxThis injected aluminum alloy part is designed to withstand the most intense thermal and vibratory stresses, ensuring the overall waterproofing of the water chamber.

The Thermostat 45 ° C Rotax is an essential component for karting engines Rotax Dd2 and max. Designed to maintain optimum operating temperature, this thermostat ensures consistent performance and increased durability of your engine. It is compatible with models Rotax DD2 and MAX, ensuring accurate regulation of the coolant temperature.