VOLUME OF CYLINDER: 124.36 cm³

NUMBER OF EXHAUST PORTS/DUCTS: 3

CONNECTING ROD:
Connecting rod centreline 104 mm
Diameter of big end 26 mm
Diameter of small end 19 mm
Min. weight of the connecting rod 86 g

BORE:
Original: 53.95 mm
Maximum: 54.08 mm

SHAPE OF THE COMBUSTION CHAMBER: Spheric with variable radius+SQUISH

PISTON:
Number of piston rings 1 or 2
Min. weight of the bare piston including piston rings 104 g

STROKE: 54.40 mm

CRANKSHAFT:
Number of bearings 2
Diameter of bearings 25
Minimum weight of crankshaft 1753 g

GUDGEON PIN: Minimum weight 26 g

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

BALANCE SHAFT: 
Minimum weight of balance shaft 332 g
Percentage of balancing 25 %