Buddies GSXR750 Quits at 80MPH

[Amber Lamps]

Originally Posted by smileyman

Honestly I would first check fuel line and tank vent line for kinks. What flows at 40 might kink up at higher pressure or consumption rate.

Ya and define "quits"... does it stop making power or shuts off completely? I would suspect add ons as well. Baring that, I'd inquire if add ons were taken off that left loose wires, connectors, injectors, etc. Then I would check to see if the exhaust valve is stuck closed, some idiot may have replaced the exhaust when they owned the bike and then put the stocker back on without hooking up the servo motor. Then I would tell him to shift into 2nd, he's hitting the rev limiter on a bike that has had it's sprockets modified 1 down and four up...