Zylinderdurchmesser 39
For this you need a crankshaft with 45mm stroke
Standard crankshaft for your standard engine as well as easy tuning
Cylinder diameter 40mm
Booster NG / Rocket / Spirit AC
BARIKIT Motordichtsatz, Minarelli liegend AC 40mm YZ65 Zylinderdurchmesser 39Gasket kit for Minarelli horizontal air cooled engines. Standard 40mm bore. Suitable for: APRILIA: Rally, Scarbeo, Sonic AC BENELLI: 491 GT, K2 air, Namur, Pepe AC BETA: ARK, Tempo, Quadra, Chrono 50 AC CPI: Euro 1, Hussar AC MALAGUTI: Centro, F10, F12, Phantom 50 AC MBK: Nitro, Evolis, Fizz, Flipper, Forte, Hot Champ AC MINARELLI: (RIEJU) CY50, First 50, Windi AC YAMAHA: Aerox Axis, Jog50, Jog Z, Neos, Why, Zest AC