The 785-24001-O-2 is a brass needle jet from Mikuni’s 389 series, made to fit TM32–TM38 flat-slide carburetors. It has a slightly larger bore than the O-0, giving the engine a bit more fuel during mid-throttle. This helps smooth out acceleration without making the mixture too rich, ideal if the motor feels a little lean in the middle range.
Jet Series: 389
Fits: TM32, TM34, TM36, TM38 Mikuni flat-slide carbs
Material: Brass
Length: About 47 mm
Head Diameter: Around 6.5 mm
Shaft Diameter: Roughly 5.2 mm
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Confirm the exact year, make, model and trim before ordering. Send us SKU 916345 with your vehicle info and we can help verify fitment.
Shipping services and final delivery cost are shown at checkout. Returns are confirmed before an RMA is issued — parts generally need to be uninstalled, unused and in original packaging. Full policy.
