Description
Stock spark plug wires degrade quickly under sustained heat and load, leaving you with misfires, fouled plugs, and lost performance. SUMAX Spiro-Pro wires deliver superior conductivity and thermal stability, cutting resistance in half and extending service life by 3-4x compared to standard carbon-core designs. Get the reliability and consistency your engine demands, whether you’re running points or modern electronic ignition.
- Spiro-Pro core construction
- 10x better conductivity
- High-temp silicone boots
- 600°F heat rating
- Precut with terminals installed
- Lower resistance design
- Runs cooler, lasts longer
- Electronic & point-type compatible
- Made in the U.S.A.
- Fits FXST TC 2023+
- Distinctive red color
- MPN: S20231
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