Abstract
Developing two displacement variations, KTM has revamped its range of engines especially for the MX1 and MX3 motocross classes. After a 36-month development period, a unique engine with a 450 cm3 displacement has been created, which — by enlarging the bore — forms the basis for a 477.5 cm3 displacement for the MX3 class. The Otto (i.e. 4-stroke combustion) engine with four-valve technology is a brand new proprietary development by KTM featuring exceptional characteristics and an especially broad usable rpm range.
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