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Description: G- Idle Jet #30 and #40 for 139QMB 49/50cc, GY6 125/150cc+ CVK or PWK carburetors, 250cc 4-stroke water-cooled 172mm carburetors. The idle jet affects fuel flow to the engine the most at closed throttle but has some effect at part throttle. The closer the throttle is to closed, the..

Description: Hoca Idle Jet for 139QMB 49/50cc, GY6 125/150cc+ CVK or PWK carburetors, 250cc 4-stroke water-cooled 172mm carburetors. The idle jet affects fuel flow to the engine the most at closed throttle but has some effect at part throttle. The closer the throttle is to closed, the more infl..

Description: Hoca Idle Jet for Honda Ruckus 50cc carburetors. The idle jet affects fuel flow to the engine the most at closed throttle but has some effect at part throttle. The closer the throttle is to closed, the more influence the idle jet has on fuel flow. A larger size increases flow. A sm..

Description: NCY Idle Jet #40 for 139QMB 49/50cc, GY6 125/150cc+ CVK or PWK carburetors, 250cc 4-stroke water-cooled 172mm carburetors. The idle jet affects fuel flow to the engine the most at closed throttle but has some effect at part throttle. The closer the throttle is to closed, the more i..

Description: Stage6 PWK Idle Jet 35-58 10Pcs-Kit for Aprilia, JOG, Zuma 50, and many other 50cc base engines. Ideal kit to set up your carburetor. 10 pilot jets in a handy plastic box, which makes it easier to grab the right one. And it's also cheaper than buying the jets individually. A s..