MY26: new engine (67.4 x 69.9 mm replaces 66.4 x 72 mm), per Beta's MY26 page header and motorcycle.com. Horsepower and torque are Dirt Rider dyno figures (39.7 hp at 8,200 rpm, 27.8 lb-ft at 6,800 rpm); Dirt Rider measured 249 lb wet.