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Heat-Dissipating Aluminum Housing — oversized finned heat sink prevents thermal throttling for long-term stability
Iron cylinder & head
Splines Inner Diameter (peak to peak): 13
these springs give both beginner tuners and experienced builders precise control over CVT performance
Exhaust valve for GY6 150cc engines
Complete Valve Assembly; CSC Go., 139QMB super9 Heat-Dissipating Aluminum Housing — oversizedThis OEM valve assembly replaces stock equipment on CSC go, go MAX, and Pug scooters and bikes running 139QMB (50cc 4 stroke) engines with 64mm valves. Original Parts For Scooters SKU 151 239 Specifications: Valve Length (intake & exhaust): 64mm Shaft Diameter (intake & exhaust): 5mm Intake Valve Diameter: 18. 4mm Exhaust Valve Diameter: 16mm Compatibility: Chicago Scooter Company go Chicago Scooter Company go MAX Chicago Scooter Company Pug50 139QMB
