With the latest v.2 cylinder Kit Series from Naraku, we can victim a more advanced product, as a 4 stroke cylinder is effective just a hole, the emphasis on technological development was placed on the piston and compression, the piston has 2 add 2 Addtition skirt, which collects engine oil to lubricate the cylinder bore and improve characteristics in extreme circumstances, The molybdenum coating aids the crucial running-in period, 2 oil Recessen en een groove op elk lagerpunt zorgen ervoor De XS1P139QMB, AV05W of AW05W -motor of de Sympsy 2 -modellen