63-66 on the dyno we use, but it reads lower then most and like others said, it depends on what Trinity actually does to the head. Mine pulled almost 67hp on KBR's old Dyno. My bros dyno'd the same as mine and his quad kicks mine ass and they are set up identical. No it's not the riders. Numbers don't tell the whole story. Some just run harder then others despite what a dyno says.