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Posted

If your bike is not ported....get the Vito's Super Stock pistons. They add a solid 7HP and are a noticeable improvement over stock. (They simulate mild porting)

But you WILL need to go up in your jetting to accommodate for the extra power.

Plus they are about tge same price as the other pistons you are already looking at.

Posted

If your bike is not ported....get the Vito's Super Stock pistons. They add a solid 7HP and are a noticeable improvement over stock. (They simulate mild porting)

But you WILL need to go up in your jetting to accommodate for the extra power.

Plus they are about tge same price as the other pistons you are already looking at.

what about these and a 4mil crank on unported cylinders?
Posted

what about these and a 4mil crank on unported cylinders?

They work great. You'll end up at approx 57 HP. With the crank and pistons.

There is a nice post in the dyno section titled something like Random Dyno Results. It might be a page or two back. But it has a few tests with the Vito's Super Stock pistons with various upgrades. Give it a look.

Posted

They work great. You'll end up at approx 57 HP. With the crank and pistons.

There is a nice post in the dyno section titled something like Random Dyno Results. It might be a page or two back. But it has a few tests with the Vito's Super Stock pistons with various upgrades. Give it a look.

 

where is the dyno section ?  I have a set of cylinders not doing anything and thinking of boring them out a little and getting some pistons.  Not sure though how big I can go on the cylinder without replacing crank.

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