The NSR300 kit may help some guys go quicker, especially if they're not experienced enough to take advantage of a tuned, well sorted, 70hp+ 250cc. A high revving, high power 250cc can be tricky to ride is you're not in control of the power.

One of the advantages in the stock 300cc kit is the midrange grunt, which helps with gearing choice (not as critical perhaps). These characteristics are controlled mainly by the porting and head design.

The stock kit is great for the street rider thanks to it's driveability, but if you're a real two stroke fanatic (like Andy) then you probably need something a little extra.

I've just changed the spec on the kit I'm putting together now, to add a little more at the top. Basically because it annoys me that Andy doesn't like the standard kit and we can't have that now can we This will now be the stock spec.