Discover our complete pocket for engine Rotax EVO, specially designed for karting enthusiasts looking for performance and reliability. This pocket is compatible with a wide range of engines Rotax, including Micro Max, Mini Max, Junior and Max (Senior) models. Whether you are an amateur or professional driver, this clutch offers everything you need to perform a complete review of your engine.

The exhaust guillotine Rotax Max is a mobile pneumatic valve that varies the height of the exhaust light. It allows to get a "full" engine at low speed while freeing all the power (about 7,500 rpm) when the valve opens. It is a critical piece that requires irreproachable cleanliness to avoid "holes" with acceleration.

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 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 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 cylinder head cap Rotax 10 mm (engraved 1.8 torque) is a spare part of origin manufacturer (Original Rotax Racing). It is designed to tightly seal one of the threaded cylinder head orifices (cylinder cover) on all the engines of the range Rotax 125 Max (Micro, Mini, Junior, Max Senior, Max Master and DD2).

Machined according to strict micrometric tolerances, this brass plug or high strength alloy has a thread of 10 mm. Its flat head includes plant engraving "1.8 Torque", indicating the pilots and mechanics the regulatory torque recommended by the plant (1.8 N · m) not to damage the aluminum thread of the cylinder head. This plug ensures absolute sealing of the liquid cooling circuit, avoiding any pressure drop or heat transfer leak at high speed.

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.