The naraku 70cc cylinder kit for benelli 491 50 ac 2001-2003 is part of the latest collection from naraku.Features: the naraku 70cc aluminium cylinder kit for minarelli horizontal ac engines is a cost effective way of increasing power on your scooter with the aluminium material providing significantly better heat dissipation the cylinder is not a high revving racing cylinder, more designed for strong acceleration and torque the naraku kit has the molybdenum coated piston aiding the crucial running-in period very good value for money and suitable for everyday use, can used with the original exhaust system kit includes barrel, piston, rings, pin, clips and required gaskets suitable for use with standard unrestricted exhaust system as well has performance pipes, upjetting of the carburettor will be required by approx 7 to 10% original cylinder can be used but we do fully recommend using the naraku cylinder head due to the increased compression, if a 70 head is not used then this may cause issues with using the electric start specifications: material: aluminum product name: cylinder kit units: kit to fit: adly herkules air tec 1 2010 european models adly herkules air tec 1 2011 european models adly herkules atv 50 vg 2014 european models adly herkules atv 50 vg 2015 european models adly herkules atv 50 vg 2016 european models adly herkules atv 50 vg 2017 european models adly herkules atv 50 v 2010 european models adly herkules atv 50 v 2011 european models adly herkules atv 5...