This is the next BIG step up from the hks 272 and 280 camshafts. Recommended for drag racing with a 35R or larger. Idle is fairly rougher than the 272's. Noticable power gains in the upper mid range up to 9,500 rpm. You will need upgraded valve springs, retainers, aftermarket intake manifold, ported cylinder head, and a aftermarket stand alone ECU. We can not publicly disclose our specs on these custom cams. Please call or stop by for further info. Available for EVO 4-9