Extreme Race Wires 12 Inch LS Spark Plug Wires for Engine Swaps
For LS swaps that place plug wires near exhaust headers, the Extreme Race Wires 12 Inch set delivers dependable ignition under intense heat. This kit of eight twelve inch spark plug wires features an eight millimeter conductor with a precise twenty five ohm per foot resistance, plus integrated RFI noise suppression to protect engine sensors and electronics. A silicone jacket rated to six hundred degrees F guards insulation in extreme conditions, while the forty five degree angled boots ensure clearance around primaries. Compatibility with GM LS swap kits and MuscleRods mounting systems ensures proper alignment from coil pack to plug, eliminating routing errors.
Product Overview
The Extreme Race Wires 12 Inch set offers drivers of LS engine swaps a reliable ignition upgrade. Each wire features an 8mm core that delivers consistent spark delivery under demanding conditions. This high-performance cable thickness balances flexibility with strength, ensuring routing remains tidy even in tight engine compartments. Engineers chose 12 inch lengths to match common header layouts without excess slack.
Electrical Performance
Each wire maintains a low resistance of 25 ohms per foot, minimizing energy loss between the coil pack and spark plug. Lower resistance preserves the coil's output voltage, producing stronger sparks and a more complete combustion cycle. Built-in advanced RFI noise suppression prevents interference with onboard electronics and aftermarket gauges, maintaining accurate readings throughout high-rpm operation.
Thermal Protection
The silicone jacket resists temperatures up to 600°F, guarding the conductor against heat generated by exhaust headers and engine exhaust routing. This temperature resistance prevents jacket cracking or softening that can lead to shorts or signal loss. The durable surface also repels oil, grease, and fuel vapors, extending cable lifespan in high-heat underhood environments common to racing and spirited street use.
Installation and Compatibility
A 45 degree boot design simplifies installation around restrictive header tubes, steering clear of hot flanges and sharp edges. The angled connection reduces strain on the spark plug terminal, improving long-term retention. These wires are fully compatible with GM LS engine swap kits and integrate seamlessly with MuscleRods mounts. This ensures correct engine placement and optimal drivetrain angles for drivetrain efficiency and vibration control.
For those looking for the same wires but need shorter wires because these are too long, consider our Extreme Race Wires 8 Inch.