Primarily there are 2 types of cooling used for the engine. Air and Liquid. Air cooled engines are cheaper but the cooling may not be uniform since the rear portion of the cylinders cannot be ...

It is a 210 cc, liquid-cooled, single-cylinder engine ... On the other hand, the current XPulse 200 utilizes a 199.6 cc air-oil cooled engine that produces around 18 bhp of max power at 8,500 ...