● The 62mm 175cc dome high compression piston with 13mm pin for the 125cc engines is a special dome piston prepared for the larger PCX150 V1 & V2 / SH150i and VARIO 150 eSP head with 29/23mm valves!
The hard chromium plating layered (Cr) piston rings which come with the set are produced by very strict Japanese standards and has excellent characteristics which combine the original properties of chromium metal with the advantages of erectro-deposits!
The main benefits from the chrominum plating layered piston rings are extermely high hardness of HmV (Micro Vickers), 800 to 1100 (cf. gray cast iron 220 to 270), high melting point of approx. 1800°C (cf. cast iron 1200°C), good thermal conductivity and corrosion resistance, a low friction factor and excellent wear resistance, such features are very effective in preventing piston ring wear.
The enlightened piston is made from A-grade materials and the piston skirts come with a molybdenum coating. The Anti-detonation grooves on the top ringland provide several advantages, which include further atomization of the combustion charge to prevent damage to the piston and ring caused by pre-ignition. These grooves also prevent carbon build up on the ring land which can cause the compression ring to stick in the ring groove.
The pressure seal groove will prevent gas build up below the top compression ring; these gases can cause the ring to lift from the ring groove. Unseating of the ring will result in compression losses and lower performance.
The valve pockets in the piston are prepared to run with the larger 150 head with 29/23mm valves..
**Need to be installed with a copper head gasket!
All prices are in USD