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The forged design and skirt finish allow for behavior suited to the stresses of motocross: heat resistance and dimensional stability at high RPMs. The oversize B (Ø 76.97 mm) corresponds to the bore dimensions specified for a fit suitable for the piston-cylinder clearance recommended by the manufacturer.
Frequent compatibilities: TM RACING MX 250 F (2011 - 250 cc), TM RACING EN 250 F (2011 - 250 cc), TM RACING MX 250 F (2010 - 250 cc).