What are the best aftermarket reed valves for a 02 mxz800? What type of gains in both performance and fuel consumption should one expect over stock? Has any one actually tried a race with another sled before and after reed valve installation to see differences?

I talked with speedwerx about putting v-force 3s on an 800 mxz and I was told about 3hp with reeds and about 3hp with spacers. Would see some gain in mileage. hope this helps.