BLOX Racing 74mm Billet Dual Pattern Throttle Body - Honda K-SeriesBLOX Racing K series dual pattern throttle bodies fit both PRB PRC and RBC RRC intake manifolds WITHOUT the aide of a throttle body adapter plate. Each is CNC machined from billet aluminum. Precision machined butterfly plates proper and consistent opening and closing. New throttle springs provide crisp response each time the engine is revved. Units are anodized to resist corrosion and are available in black and silver finishes. The IACV can be used or