After I finish my flat-track setup I'm thinking about a Big Bore. I'll be racing (all modded) a DS650(one of the best in the state), 450R(soon to be one of the best), 2 Predators(one got sent to Rath Racing for some work), and one YFZ if he races this year which I understand is seriosly fast.

I'd say I have a little bit of competition and that's just at my local track.

Now about the 440 kit, have any of you had any experience with it? I'm really not wanting to go over $600-$700 if there are any other ideas. Thanks.

 

With my setup Im about dead even with a piped YFZ in a drag race.

The cams gave a very good power gain in higher rpm's. The DRZe suzuki bike has a thinner base gasket and stiffer valvesprings. The DRZe base gasket bumps the compression up from ~11.3:1 to ~12.3:1.

Im not sure on the 440 kit, no experience with one.

 

How big of track are you going to run.bigger piston more torque, but not always faster. long track make it rev. short track make more torque. been their done that.