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two-stroke versus four-stroke

MOTOCROSS ACTION’S TWO-STROKE VERSUS FOUR-STROKE SHOOTOUT: 2004 CRF450 VERSUS 2001 CR500

First, let’s get one myth out of the way up front. It is common for modern critics of the 450cc four-stroke to claim that the AMA 500cc National Championship was terminated because bikes like the CR500 and KX500 were too powerful. Not true. Not even close to true. The reality is that the AMA dropped the 500 National Championships after the 1993 season under political pressure from Suzuki and Yamaha. No surprise there; neither Suzuki nor Yamaha built a competitive 500cc motocross bike. In fact, Suzuki ha…