I was searching online for a jet kit and found huge price differences. The K&N kit runs about $45 and the FMF runs about 75$. (I have not found a Dyno Jet kit yet) Does anyone know what the difference is between the different jet kits? Which is best?

Also, does anyone know what RPM the EPI red spring engages at?

Thanks!

 

I think the red spring kicks in about 800 over, but I'm not quite sure. Are you talking about buy a complete selection of jets? Why not just buy the one's you need? They only cost about $3 a piece.

 

I thought about that, but I figured I would have to try a few different combinations befor I get it right. Plus I wanted the others for when I go ride at a different location. Although, you may be right. At $3 each I may be able to come up with a range of sizes that I need and just get the ones I need.

 

You'll probably save money, as only a few jets will ever be used regardless of the elevation changes you go through. Keihn jets are used on more than just our quads, so the jet kit will have pieces completely unsuitable for the bikes. I just bought 2 new jets, combined with what is already on the bike it should give me all I'll need unless I supercharge.