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FAST FireWire Spark Plug Wire Sets

4.75 out of 5 stars 12 Customer Reviews

With a rating of 25 ohms per foot, FAST FireWire spark plug wires are a whopping 37 percent more efficient than the nearest competitor. These premium-grade, double-
With a rating of 25 ohms per foot, FAST FireWire spark plug wires are a whopping 37 percent more efficient than the nearest competitor. These premium-grade, double-layer, silicone-insulated wires offer unsurpassed resistance to heat and damaging fluids and enhanced protection against high-voltage breakdown. They are also ideal for street use, as their KEVLAR®-reinforced "reactive core" design filters out RFI and EMI noise that affects sound systems.

Additional features include:

* Unique reactive-core engineered to deliver maximum spark-gap energy to your spark plugs with today's high-output competition ignition
With a rating of 25 ohms per foot, FAST FireWire spark plug wires are a whopping 37 percent more efficient than the nearest competitor. These premium-grade, double-layer, silicone-insulated wires offer unsurpassed resistance to heat and damaging fluids and enhanced protection against high-voltage breakdown. They are also ideal for street use, as their KEVLAR®-reinforced "reactive core" design filters out RFI and EMI noise that affects sound systems.

Additional features include:

* Unique reactive-core engineered to deliver maximum spark-gap energy to your spark plugs with today's high-output competition ignitions
* Filter out RFI and EMI (RFI/EMI pulsings confuse onboard engine control computers, audio systems, and other electronic devices)
* Very low 25 ohm resistance ensures maximum spark-gap energy is delivered to the spark plugs
* Complete, assembled, and ready to install!

Results 1 - 14 of 14

Spark Plug Wires, FireWire, Reactive Core, 8.5mm, Black, 135 Degree Boots, Universal, V8, Set

Part Number: FST-255-0083

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Spark Plug Wires, FireWire, Male/HEI, Gray, Silicone, Sprial Core, GM USAR Pro Cup, Set

Part Number: FST-295-2401

Not Yet Reviewed

Estimated Ship Date: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today

Spark Plug Wires, FireWire, Reactive Core, 8.5mm., Black, 90 Degree Boots, Under Header Design, SBC, Set

Part Number: FST-255-2407

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today

Spark Plug Wires, FireWire, 8.5mm, Black, 90 Degree Plug Boot, Universal, 32.5 in. x2, 38.5 in. x2, 42.5 in. x2, 48 in., 54 in., 28.5 in. Coil, V8,Set

Part Number: FST-295-0082

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Spark Plug Wires, FireWire, 8.5mm, Black, 45 Degree Plug Boot, Universal, 32.5 in. x2, 38.5 in. x2, 42.5 in. x2, 48 in., 54 in., 28.5 in. Coil, V8,Set

Part Number: FST-295-0083

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Spark Plug Wires, FireWire, Reactive Core, 8.5mm., Black, 135 Degree Boots, Ford/Mercury, Ford, Small Block, Set

Part Number: FST-255-2426

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Spark Plug Wires, FireWire, 8.5mm, Black, Straight Plug Boot, Universal, 32.5 in. x2, 38.5 in. x2, 42.5 in. x2, 48 in., 54 in., 28.5 in. Coil, V8, Set

Part Number: FST-295-0081

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Spark Plug Wires, FireWire, Reactive Core, 8.5mm, Black, Straight Boots, Universal, L8/V8, Set

Part Number: FST-255-0081

Not Yet Reviewed

Estimated Ship Date: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today

Spark Plug Wires, FireWire, Male/HEI, Gray, Silicone, Spiral Core, Chevy, Big Block, Under-Header Design, Set

Part Number: FST-295-2416

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Spark Plug Wires, FireWire, Male/HEI, Gray, Silicone, Spiral Core, GM 602, Sprint Car, Set

Part Number: FST-255-2404

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Spark Plug Wires, FireWire, Reactive Core, 8.5mm, Black, Straight Boots, Universal, L6/V6, Set

Part Number: FST-255-0061

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Spark Plug Wires, FireWire, Reactive Core, 8.5mm, Black, Stock Boots, Chevy, Small Block, LS1, Set

Part Number: FST-255-2419

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Spark Plug Wires, FireWire, Male/HEI, Gray, Silicone, Spiral Core, GM, Gen V, LT-1, Set

Part Number: FST-255-2421

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Spark Plug Wires, FireWire, Reactive Core, 8.5mm, Black, Straight Boots, Universal, L4/V4, Set

Part Number: FST-255-0041

Not Yet Reviewed

Estimated Ship Date: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today

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