Honda Unveils 2027 CRF450R and CRF450RX With All-New Engine, 10% More Power

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Honda has unveiled the 2027 versions of its competition motocrossers, the CRF450R and CRF450RX. The completely redesigned 449.5cc single delivers 10.3% more power and 3.7% more torque than before. It's 17mm narrower at its widest point and about 6 pounds lighter. Compression rises from 13.50:1 to 13.75:1. The engine retains its Unicam design while placing intake and exhaust rocker shafts on a shared axis, achieving both rigidity and compactness, reflecting insight drawn from HRC's racing knowledge.