12 Inch Extreme Race Spark Plug Wires for LS Engines
Taming the ignition challenges of a Gen III LS swap begins with the Extreme Race Wires 12 Inch set, which holds resistance at only 25 ohms per foot to sharpen throttle response. Featuring a heat resistant silicone jacket rated to handle up to 600°F, these spark plug wires shrug off header heat and stay flexible for neat routing around exhaust passages. Integrated RFI suppression protects engine sensors from stray electromagnetic signals and molded 45 degree boots ensure a secure fit on GM LS plug wells without complex alignment.
Optimized 8mm Conductor for Maximum Spark Energy
The 8mm diameter core in these spark plug wires delivers minimal resistance of 25 ohms per foot, ensuring a strong voltage path for every ignition cycle. This precise conductor size reduces voltage drop and promotes rapid current discharge, resulting in sharper throttle response and more consistent cylinder combustion. Racers and street drivers alike will notice improved engine efficiency under load, as the wires maintain stable spark delivery through high RPM operation. This electrical efficiency can also expose hidden power gains by preserving peak spark intensity.
Advanced RFI Suppression Preserving Engine Control Signals
Each wire integrates a specialized resistive core with shielding features to block radio frequency interference before it affects the ECU or sensor wiring. This built in noise protection is vital in LS swaps where sensitive knock and crank sensors require clean signals for accurate timing. By absorbing stray electromagnetic energy, the wires help maintain precise ignition timing and reliable sensor feedback under all driving conditions. The result is stable engine management performance even in electronically noisy environments.
Silicone Jacket Rated to 600°F for Under Hood Durability
A robust silicone oversleeve shields the conductor from extreme temperatures up to 600°F, guarding against heat soak from headers and exhaust manifolds. This high temperature material also resists oil, ozone, and chemical exposure to prevent cracking or hardening as the engine bay ages. Its inherent flexibility allows neat routing around components without stress, while resisting abrasion and environmental wear. Over time, this insulation preserves consistent electrical protection to avoid shorts or power loss.
45 Degree Boot Profile for Effortless LS Swap Routing
The molded boots use a 45 degree angle to enable clean routing around tight header and frame clearances common in LS engine conversions. This boot geometry reduces bending stress at the wire ends and ensures a secure seal against moisture and contaminants at the spark plug interface. Each boot seats precisely on GM LS plug wells and coil packs for true plug and play fitment. Technicians will appreciate the streamlined installation that eliminates tedious alignment and guesswork.
Count on MuscleRods for a reliable fit and lasting performance. For those looking for the same wires but need shorter wires because these are too long, consider our Extreme Race Wires 8 Inch.