High Altitude Kits CarburetorFuel Cup Seal Jet A (2000ft to 3000ft) Jet B (3000ft to 5000ft) Jet C (5000ft to 6000ft) Jet D(6000ft to 7000ft) Bolt Seal Solenoid valve sealing ring

High Altitude HAKCarburetor

Fuel Selector switch HAKs (500cc) & (550cc)A: 2,000 to 3,000 ft: first levelB: 3,000 to 5,000 ft: second levelC: 5,000 to 6,000 ft: third levelD: 6,000 to 7,000 ft: fourth level