Survivor – 1989 Yamaha FZR1000

Originally showcasing the 5-valve head in 1987, the FZR 1000 enjoyed continued development in 1989 with the EXUP ( EXhaust Ultimate Power valve ) which tailored the header opening to RPM with an ECU-controlled valve.  Allowing a large header to flow high engine speeds, and providing linear low and mid-range power and torque, the system…