Built specifically for the 2.2L F22 engine found in the 2004 and up Honda S2000. Features full stainless steel construction and revised dimensions for the larger 2.2L displacement. Primaries are 50mm shorter, and secondaries are 50mm longer. Torque and horsepower gains are seen over the entire RPM range, with 10hp peak gained over the stock manifold. Comes complete with all necessary hardware for installation.