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(SureFly sold separately)
Choose from three different spark plug end options.



5/8"
3/4"
Auto
Apex harnesses are engineered to deliver spark energy where it belongs – to the spark plugs – and nowhere else.
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Experimental harnesses are now available. Certified to follow.
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$395 - $595
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(ISP) Ignition System Polymer harness cap
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29% shorter than legacy Slick-style cap
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Captive O-ring
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Captive Fasteners
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Lightweight
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Provision for harness cap pressurization
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High altitude silicone sealing grommets
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Double extruded silicone, aramid core ignition leads
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Serviceable leads (replacement parts available)
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4 and 6-cylinder, automotive and aircraft spark plugs (5/8 and 3/4)
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User configurable - cut leads to length and install spark plug ends (tools included in kit)
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