Rebuild???

[LeGrandeMS]

i was wandering what the best bore, and engine mods you can put on a 300ex. I mostly trail ride, hill climb, and light MX. im looking for an all around quickness. thanks!

[klutch]

I personally like the 330ex with a Curtis Sparks exhaust on it, and a K&N Filter...

[JIMFROMTEXCO]

stock bore high comp piston, 400 carb, nice flowing exhaust, cam, 400 front end with re-worked 450r shocks, 01 raptor 660 shock reworked on rear, 350x axel and hubs.

imo would be a best bang for the buck set up 300