if you have a manual ...the redline should be from the factory set @ 6750rpm... dont go past that because thats when the rev limiter kicks in too... i also too only know the final drive gear ratio wich should be 3.82:1...as for other gears...i have no idea...any other questions??? feel free to ask
Um...well the rev limiter is 6750 stock, mine is 7100 with a chip. The "redline" if it was 6500 my motor should be fried. The redline for the zetec is much higher than most of us will ever get to, Focus Central has a car zooming up to 8000rpms.