DRAG SPECIALTIES Spark Plugs — 14 mm thread, 19.1 mm reach (3/4 in), BPR5ES-11 – 74-86 Big Twin, 79-99 Touring, 85-99 Softail, 91-99 Dyna, 82-94 FXR, 99 CVO, 84 Police
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Black ceramic spark plugs with a copper-core electrode for long service life. Multi-rib insulator prevents flashover; nickel-plated housing resists corrosion.