On a new fresh piston, how many hours / miles would you expect an EC 300 to go between needing a new piston if you was using it for the odd weekend trail ride and using it to commute to work say 20 mile round trip via 30mph and 40mph roads
Put 3000 varied miles on mine and then turned it into a 250 and the 300 piston was still good no loss of power, very small amount of blow by on the rings.
