For the North American market, the updates also included the introduction of a larger version of the F20C (with a designation of F22C1), this larger engine gave the new model a chassis designation of AP2. The engine's stroke was lengthened, increasing its displacement to . At the same time, the redline and fuel cutoff were reduced from 8,800 rpm and 9,000 rpm to 8,000 rpm and 8,200 rpm respectively, mandated by the longer travel of the pistons. Peak torque increased by 6% to at 6,800 rpm while power output remained unchanged at achieved at a lower 7,800 rpm. In conjunction with the introduction of the F22C1, Honda also changed the transmission gear ratios by shortening the first five gears and lengthening the sixth.