-Hepolite pistons with increased bore +0.20 with total engine displacement of 1293cc -Original head Special Tuning model C-AHT221 -Aspiration valves 37.2mm/exhaust valves 27.2 -Lightweight crankshaft, lightweight rods, all balanced with flywheel and clutch -Lightweight steel flywheel -Copper clutch disc -Reinforced ...