VOLUME OF CYLINDER: 124.66 cm³

NUMBER OF CARBURATION SYSTEMS: 1 carburetor

CYLINDER WALL MATERIAL: Aluminium alloy + Nicasil

BORE: (Original: 54 mm - Maximum: 54.07 mm)

NUMBER OF TRANSFER DUCTS, CYLINDER/SUMP: 5 / 3

LENGTH BETWEEN THE AXES OF THE CONNECTING ROD: 109.8

STROKE: 54.43 mm

NUMBER OF EXHAUST PORTS / DUCTS: 3

VOLUME OF COMBUSTION CHAMBER: 11 cc

COOLING SYSTEM: Acqua

SHAPE OF THE COMBUSTION CHAMBER: Sferica con raggio variabile+SQUISH

NUMBER OF PISTON RINGS: 1 o 2