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Moroso

Moroso Ultra 40 Race Ignition Wire Sets

4.73 out of 5 stars 134 Customer Reviews

Moroso new Ultra 40 Race ignition wire sets are the most powerful and RFI/EMI-resistant wires available for racing today. Features of these 8.65mm wires include a K
Moroso new Ultra 40 Race ignition wire sets are the most powerful and RFI/EMI-resistant wires available for racing today. Features of these 8.65mm wires include a Kevlar® core that's four times stronger than Aramid cores, a class-leading 40 ohms of resistance per foot, nickel copper alloy conductors for superior spark energy transfer, an extra-thick EPDM layer for greater dielectric strength, high-temperature silicone boots that can withstand heat up to 600 degrees, and locking stainless steel plug terminals. Plus, their closely woven fiberglass, silicone-impregnated insulation provides up to 8,000 extra volts of pro
Moroso new Ultra 40 Race ignition wire sets are the most powerful and RFI/EMI-resistant wires available for racing today. Features of these 8.65mm wires include a Kevlar® core that's four times stronger than Aramid cores, a class-leading 40 ohms of resistance per foot, nickel copper alloy conductors for superior spark energy transfer, an extra-thick EPDM layer for greater dielectric strength, high-temperature silicone boots that can withstand heat up to 600 degrees, and locking stainless steel plug terminals. Plus, their closely woven fiberglass, silicone-impregnated insulation provides up to 8,000 extra volts of protection, and their extra-thick diameter extends wire life by adding additional insulation against heat, chaffing, and contaminants.

Showing In Stock Items. Show All 31 Items.

Results 1 - 25 of 30

Moroso Ultra 40 Race Ignition Wire Sets 73820

Moroso Ultra 40 Race Ignition Wire Sets 73820

Moroso Ultra 40 Race Ignition Wire Sets 73820

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Black, 90 Degree Boots, Chevy, Set

Part Number: MOR-73820

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73816

Moroso Ultra 40 Race Ignition Wire Sets 73816

Moroso Ultra 40 Race Ignition Wire Sets 73816

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Black, 135 Degree Boots, Universal V8, Set

Part Number: MOR-73816

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73814

Moroso Ultra 40 Race Ignition Wire Sets 73814

Moroso Ultra 40 Race Ignition Wire Sets 73814

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Black, 90 Degree Boots, Universal V8, Set

Part Number: MOR-73814

Not Yet Reviewed

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73607

Moroso Ultra 40 Race Ignition Wire Sets 73607

Moroso Ultra 40 Race Ignition Wire Sets 73607

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Blue, 90 Degree Boots, GM, V8, Set

Part Number: MOR-73607

4.33 out of 5 stars ( 18 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73818

Moroso Ultra 40 Race Ignition Wire Sets 73818

Moroso Ultra 40 Race Ignition Wire Sets 73818

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Black, 90 Degree Boots, Chevy, Set

Part Number: MOR-73818

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73839

Moroso Ultra 40 Race Ignition Wire Sets 73839

Moroso Ultra 40 Race Ignition Wire Sets 73839

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Black, 180 Degree Boots, Universal V8, Set

Part Number: MOR-73839

Not Yet Reviewed

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73616

Moroso Ultra 40 Race Ignition Wire Sets 73616

Moroso Ultra 40 Race Ignition Wire Sets 73616

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Blue, 90 Degree Boots, Under Header, BBC, HEI, V8, Set

Part Number: MOR-73616

5.0 out of 5 stars ( 21 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73602

Moroso Ultra 40 Race Ignition Wire Sets 73602

Moroso Ultra 40 Race Ignition Wire Sets 73602

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Blue, 90 Degree Boots, GM, V8, Set

Part Number: MOR-73602

4.79 out of 5 stars ( 14 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73628

Moroso Ultra 40 Race Ignition Wire Sets 73628

Moroso Ultra 40 Race Ignition Wire Sets 73628

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Blue, 135 Degree Boots, Ford, Mercury, 460, Set

Part Number: MOR-73628

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73845

Moroso Ultra 40 Race Ignition Wire Sets 73845

Moroso Ultra 40 Race Ignition Wire Sets 73845

Spark Plug Wire Sets, Ultra 40 Race Ignition Wires, Assembled, Coil Pack, Spiral Core, Black, 8.65mm Diameter, Chevrolet, Small Block LS, Set

Part Number: MOR-73845

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73617

Moroso Ultra 40 Race Ignition Wire Sets 73617

Moroso Ultra 40 Race Ignition Wire Sets 73617

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Blue, 90 Degree Boots, Under Header, Chevy, Big Block, Set

Part Number: MOR-73617

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73848

Moroso Ultra 40 Race Ignition Wire Sets 73848

Moroso Ultra 40 Race Ignition Wire Sets 73848

Spark Plug Wires, Ultra 40 Race, Spiral Core, 7mm, Black, Sleeved, 45 Degree Boots, Chevy, V8, 6.2L, Set

Part Number: MOR-73848

Not Yet Reviewed

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73833

Moroso Ultra 40 Race Ignition Wire Sets 73833

Moroso Ultra 40 Race Ignition Wire Sets 73833

Spark Plug Wires, Ultra 40 Race, Assembled, Male/HEI, Spiral Core, 8.65mm, 90/135 Degree, Black, Ford, 4.7L, 4.8L, 5.0L, Set

Part Number: MOR-73833

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73802

Moroso Ultra 40 Race Ignition Wire Sets 73802

Moroso Ultra 40 Race Ignition Wire Sets 73802

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Blue, 135 Degree Boots, Universal, V8, Set

Part Number: MOR-73802

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73800

Moroso Ultra 40 Race Ignition Wire Sets 73800

Moroso Ultra 40 Race Ignition Wire Sets 73800

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Blue, 90 Degree Boots, Universal V8, Set

Part Number: MOR-73800

4.82 out of 5 stars ( 11 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73801

Moroso Ultra 40 Race Ignition Wire Sets 73801

Moroso Ultra 40 Race Ignition Wire Sets 73801

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Blue, Straight Boots, Universal, V8, Set

Part Number: MOR-73801

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73810

Moroso Ultra 40 Race Ignition Wire Sets 73810

Moroso Ultra 40 Race Ignition Wire Sets 73810

Spark Plug Wires, Ultra 40 Race, Spiral Core, 8.65mm, Red, 90 Degree Boots, V8, Set

Part Number: MOR-73810

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Moroso Ultra 40 Race Ignition Wire Sets 73846

Moroso Ultra 40 Race Ignition Wire Sets 73846

Moroso Ultra 40 Race Ignition Wire Sets 73846

Spark Plug Wire Sets, Ultra 40 Race Ignition Wires, Assembled, Coil Pack, Spiral Core, Black, 8.65mm Diameter, Chevrolet, Small Block LS, Set

Part Number: MOR-73846

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Moroso Ultra 40 Race Ignition Wire Sets 73828

Moroso Ultra 40 Race Ignition Wire Sets 73828

Moroso Ultra 40 Race Ignition Wire Sets 73828

Spark Plug Wires, Ultra 40 Race, Spiral Core, 7mm, Black, Straight Boots, Universal, Coil-on Plug, LS, V8, Set

Part Number: MOR-73828

Not Yet Reviewed

Estimated Ship Date: Today

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Moroso Ultra 40 Race Ignition Wire Sets 73836

Moroso Ultra 40 Race Ignition Wire Sets 73836

Moroso Ultra 40 Race Ignition Wire Sets 73836

Spark Plug Wires, Ultra 40 Race, Spiral Core, 8.65mm, Red, 135 degree Plug Boot Ends, V8, Set

Part Number: MOR-73836

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 9, 2026 if ordered today

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Estimated Ship Date: Jan 9, 2026 if ordered today

Moroso Ultra 40 Race Ignition Wire Sets 73535

Moroso Ultra 40 Race Ignition Wire Sets 73535

Moroso Ultra 40 Race Ignition Wire Sets 73535

Spark Plug Wires, Ultra 40 Race, Spiral Core, 7mm, Blue, Straight Boots, Universal, V8, 8.000 in. Long, Set

Part Number: MOR-73535

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Jan 9, 2026 if ordered today

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Estimated Ship Date: Jan 9, 2026 if ordered today

Moroso Ultra 40 Race Ignition Wire Sets 73817

Moroso Ultra 40 Race Ignition Wire Sets 73817

Moroso Ultra 40 Race Ignition Wire Sets 73817

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Black, 90 Degree Boots, Chevy, Set

Part Number: MOR-73817

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Moroso Ultra 40 Race Ignition Wire Sets 73827

Moroso Ultra 40 Race Ignition Wire Sets 73827

Moroso Ultra 40 Race Ignition Wire Sets 73827

Spark Plug Wires, Ultra 40 Race, Spiral Core, 7mm, Black, Straight Boots, Universal, V8, 9.750 in. Long, Set

Part Number: MOR-73827

Not Yet Reviewed

Estimated Ship Date: Jan 9, 2026 if ordered today

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Estimated Ship Date: Jan 9, 2026 if ordered today

Moroso Ultra 40 Race Ignition Wire Sets 73826

Moroso Ultra 40 Race Ignition Wire Sets 73826

Moroso Ultra 40 Race Ignition Wire Sets 73826

Spark Plug Wires, Ultra 40 Race, Spiral Core, 7mm, Black, Straight Boots, Universal, V8, 12.000 in. Long, Set

Part Number: MOR-73826

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Moroso Ultra 40 Race Ignition Wire Sets 73823

Moroso Ultra 40 Race Ignition Wire Sets 73823

Moroso Ultra 40 Race Ignition Wire Sets 73823

Spark Plug Wires, Ultra 40 Race, Spiral Core, 7mm, Black, Straight Boots, Universal, V8, 8.000 in. Long, Set

Part Number: MOR-73823

Not Yet Reviewed

Estimated Ship Date: Jan 9, 2026 if ordered today

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Estimated Ship Date: Jan 9, 2026 if ordered today

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