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This 3-port long-stroke engine offers a high torque at mid-low range with a sweet delivery and low consumption. The crankcase, the crankcase cap and the carburetor feature a new design. The new DLC-coated crankshaft has two tungsten counterweights for smooth rotation and better balancing. The B2103 Type S comes with a low'profile cooling head to provide better drivability and also vertical fins on the top to improve heat dissipation. An O-ring between the cooling head and the combustion camber insert reduces vibrations protect against dirt thanks to a better sealing. The new 22D carburetor guarantees high response and smooth acceleration.
Output [kW / (PS)]: 2,68 PS at 34000 rpm kW (PS)
All-up weight [g]: 347 g
rpm range, approx.: 4000-42000 U/min
Bore [mm]: 16,27 mm
Cylinder capacity [ccm]: 3,49 cm³
Stroke [mm]: 16,80 mm