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Honda Announces 400cc Version of 500-Series Engine

Honda has revealed a new, smaller-displacement variation of the 470cc parallel-twin engine introduced on its new CBR500, CB500F and CB500X models. The new engine has a bore of 67mm, just like Honda‘s 500-series engine, but a stroke of 56.6mm instead of the longer 66.8mm. The result is an engine displacement of 399cc, which makes the new engine a better fit for markets such as Japan license restrictions are much stricter for engines larger than 400cc.

2014 AMA Supercross – San Diego Results

James Stewart captured his first AMA Supercross win of the season, leading all 20 laps before a crowd of 56,828 fans at Qualcomm Stadium in San Diego, Calif. The Yoshimura Suzuki rider becomes the fourth different winner of  the season in the 450 class through six rounds. The news was less positive for last week’s winner Chad Reed.

2014 Honda CBR300R Specs Revealed

Specifications for the 2014 Honda CBR300R have surfaced from CIMAMotor in Chongqing, China, where the new small-displacement sportsbike made its debut. Join the CBR 300 Forum According to the spec sheet, will be powered by a fuel-injected 286cc single-cylinder engine, with a bore of 76mm and 63mm stroke. Based on this, we surmise the engine is indeed based on the CBR250R’s engine which has a similar 76mm bore, but with a 55mm stroke.