Honda F22C1 engine found in the S2000.
The Honda S2000 has 2 motors depending on the year and region
that is was made in. For US models made between the year 2000 to
early 2005 It had the F20C motor which red lined at 9,000rpm's. For
US models mid 2005- May 2009 it came with the F22C motor which red
lined at 8,500rpm's. The final "Ultimate" 2009 S2000's made only in
Europe came with the F20C motor.