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Mega ZX21 Idle Stop Screw
MEG202076
Precision steel idle stop screw (MEG202076) for Mega ZX21 DSII+ RC nitro engines, designed to set reliable minimum throttle position for consistent idle stability.
Achieve rock-solid idle control with the genuine Mega ZX21 Idle Stop Screw (MEG202076), a critical steel component for Serpent Mega DSII+ 3.5cc nitro engines. This precision-machined screw threads into the carburetor body to establish a positive mechanical stop for the throttle barrel, preventing over-closure and ensuring repeatable minimum RPM settings even under vibration and heat. Essential for 1/8-scale touring cars, it eliminates erratic stalling and allows fine idle tuning without risking barrel damage. Simple to install during carb maintenance or rebuilds, this factory replacement restores factory-spec throttle response and engine reliability—keep one in your toolbox for instant trackside fixes and consistent performance from heat to heat.
