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