These jets fit GX160, GX200, and GX390 carbs, clones, and Predators.
Selection suggestions for Box Stock:
Red restrictor plate engines on gas: .042" with .021" low speed jet
Green and Purple restrictor plate engines on gas: .041" with .021" low speed jet
Blue restrictor plate engines on gas: .039" with .021" -.022" low speed jet
Unrestricted .615 carb on gas: .038" - .039" with .021" -.022" low speed jet
Selection suggestions for Modified on Methanol .057" with .029" low speed jet
