Predator and XR2500 head swap?

[juniorssrollin]

This is a private family and friend run track that is pretty much run what ya bring. I however want it to "look" stock. My kart is setup very well and is already very fast in the turns as long track stays together.

 

[OzFab]

Ok, here's the problem: You can add all the internal hop-up parts you like but, if the engine can't breathe, it's all pointless...

The absolute first mod we ever suggest is to replace the air filter assembly & exhaust with hi flow units, which boosts hp by around 10-15% but, it takes away the "stock look".

If you can gut the muffler (as previously suggested) &, somehow, "open up" the airbox, you should get a little more power while retaining the "stock look"

 

[Scout]

The air filter and exhaust are all you really need to admit to having, and it does make a ton of difference in engine power. Rod and flywheel aren't exactly performance enhancers, more like insurance against catastrophic failure. Other than that, someone may ask about the governor, which you will probably have to cop to also.