Main Jet for GY6 150cc scooters.
Number 115 and 130 jets are what we use at this time for a stable upgrade when doing exhaust and air filter. Use larger jet 130 for upgrades and 115 just to get an edge if your are not getting good gas flow. This along with new gas lines plus air lines helps alot and a practice we have in our shop. You might try a few just to get it right depends on upgrades and climate where you ride.
48 Lower States Only