It very much depends on what tracks you run. In sand and especially tight sand tracks there is no bike that matches it when it comes to lap times. It does have a hard time to finish a 30 min +2 lap moto with a pro on it though.
Hard pack it's more on equal foot with the 4 strokes but most are faster on the Stark.
Where the Stark really suffers is on the "washboards". Stark themselves admitted that as well. They just couldn't get the suspension to do what they want. They "blamed" it on the bike behaving different due to the more centraliced mass and suspension tuners having to learn their way around this new balance of things. This was however on the MX1.0. Maybe the new tuning is better.
Out of the box the Stark 1.0 had a tough time on our Sand tracks since it was nosediving in the corners. But so are most bikes and every bike is sent to a suspension tuner. People just hoped that with the suspension set to your weight they wouldn't need to revalve it. They only did not need to replace the spring anymore wich saved them some.
It took the Dutch tuners a while to get the bikes right, but now the suspensions are on equal foot with anything else comming from the tuner.
Since washboards arn't a serious part of our tracks the Starks do really well.
