Athena 478

[YFZer]

Has anyone got the Athena 478 big bore kit on their yfz? Can you tell a big difference in the power? IS it worth the money?

[KB Motorsports]

I did the athena/ we swap on my 04 yfz and i could tell a huge night and day difference. I think its worth it at 630.00


Take care
Kenneth

[IOWAracer]

A friend of mine has it done and man does that motor pull he gets huge leads on the holeshot with it im thinking of doing it myself just dont know what exactly is wrong with my motor at this time!