Honda quotes the 1967 RA300 as producing "over 420 PS" (414 bhp) at 11,500rpm. The vehicle weight excess over the 500 kg minimum had been approximately halved, with Honda quoting a weight of 590 kg.
Honda mentions that the 1967 RA300 generated "more than 420 PS" (414 bhp) at 11,500 rpm. The vehicle's excess weight over the 500 kg minimum had been roughly halved, with Honda stating a weight of 590 kg.