Composition of the piston kit “MOTORIST+” D-21:
Piston D21 (4k.) x 1 pc
Cylinder D37M x 1 pc
Pin D37 x 1 pc
Rings 144
Retaining rings D144 x 2 pcs
Copper ring D37M x 1 pc
Advantages of the piston kit:
Selective assembly
Selective assembly guarantees an extended service life of the engine kit.
High precision manufacturing
Thanks to modern high-precision equipment, kit components are manufactured with micron precision, ensuring optimal clearances in each friction pair for perfect compatibility.
Surface and coating of the sleeve
Processing the working surface of the sleeve using plateau honing contributes to better oil retention. The fully phosphated sleeve is 100% protected against corrosion, and the inner surface has an additional finishing effect.
Heat-resistant coating
The piston combustion chamber surface is coated with a special heat-resistant coating called “Protect+,” which has no analogs. This coating protects the edges of the combustion chamber from hot cracks, high-temperature gas erosion, and carbon deposits, promoting more complete fuel combustion.
Laser marking
High-quality laser marking is applied to the piston, sleeve, and piston pin.
Anti-friction coating
The piston skirt is coated with a special anti-friction coating called “Slide Pro,” which accelerates the running-in process, protects against scuffing, and reduces engine noise.
Microrelief
The microrelief on the working surface of the piston serves to increase the oil capacity of the piston, significantly reducing friction in the piston-sleeve pair.
High resistance to wear and damage
Tempering the outer surface of the pin provides increased resistance to wear.