these days 4 strokes are in vogue the advantages are they have the power as well the fuel efficiency, boss is a 2 stroke bike. the 4 stroke bikes are not only fast but also less maintenance is required. it is a myth that as 2 stroke bikes have less moving parts in the engine as no valves only ports, so are maintenance free. the actual story is different as the 4 stroke bikes have good combustion control the exhaust remains free of carbon so remains free and clean always. in 2 stroke you have to decarbonise the exhaust periodically otherwise you loose power. the engine of 4 stroke is also powerful and can race with the 2 stroke as the revolutions these days match with the 2 stroke. moreover, the 4 stroke bike is enviro friendly. so more in vogue these days. boss was once ok when there were no 4 stroke bikes in the market. the mileage is also more for the same engine capacity as the fuel burnt is 70% in the best 2 stroke engine. where as 4 stroke burns more than 75%
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