Standard 10mm Tip Spark Plug for World Formula

Firing on all cylinders starts here: the Standard Tip ND 10mm Spark Plug, precision-tuned for World Formula engines.

Its nickel-tipped electrode ensures hot, reliable sparks across wide RPM sweeps, combating fouling in rich mixtures common to tuned karts. The 10mm thread sinks deep for heat transfer, preventing pre-ignition that plagues hot tracks.

• Hex size fits standard ratchets for wrench-free swaps.
• Resistor core suppresses EMI, keeping electronics quiet.

This plug organizes your ignition routine, with gap specs that match stock for out-of-box readiness. Racers notice crisper starts and sustained power through gears, edging out less reliable options. SKU: U20ESRN is the unsung hero for consistent laps, especially in variable weather.