to me the suspension is ok to some degree but a carb wont do anything and the money you spend on brand new china 250 is the price of a second hand jap and the only reason why im saying it's better to get a jap is because the china 250s are like riding a lifan 125 i use to run a 110cc engine and i honestly reckon id pass it i don't know what it is with china but there 250's are gutless no matter what you do to them they are just gutless and have no true power it's like trying to ride a bike towing a trailer full of bricks it just wont take off like the japs do