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Moroso Ultra 40 Unsleeved Custom-Fit Wire Sets

4.54 out of 5 stars 140 Customer Reviews

The new standard in ignition wires for racers on a budget! Moroso Ultra 40 unsleeved custom-fit ignition wire sets are the most powerful and RFI/EMI-resistant wires
The new standard in ignition wires for racers on a budget! Moroso Ultra 40 unsleeved custom-fit ignition wire sets are the most powerful and RFI/EMI-resistant wires available for racing today. Plus, their closely woven fiberglass, silicone-impregnated insulation provides up to 8,000 extra volts of protection.

Features:

* Kevlar® core that's four times stronger than Aramid cores
* Class-leading 40 ohms of resistance per foot
* Nickel copper alloy conductors for superior spark energy transfer
* Extra-thick EPDM layer for greater dielectric strength
* High-temperature silicone boots that can withstand heat up
The new standard in ignition wires for racers on a budget! Moroso Ultra 40 unsleeved custom-fit ignition wire sets are the most powerful and RFI/EMI-resistant wires available for racing today. Plus, their closely woven fiberglass, silicone-impregnated insulation provides up to 8,000 extra volts of protection.

Features:

* Kevlar® core that's four times stronger than Aramid cores
* Class-leading 40 ohms of resistance per foot
* Nickel copper alloy conductors for superior spark energy transfer
* Extra-thick EPDM layer for greater dielectric strength
* High-temperature silicone boots that can withstand heat up to 600 degrees
* Locking stainless steel plug terminals

Results 1 - 14 of 14

Spark Plug Wires, Ultra 40 Unsleeved Custom-Fit, Assembled, Spiral Core, 8.65mm, Red, Ford, 289, 302, Set

Part Number: MOR-73696

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Spark Plug Wires, Ultra 40 Unsleeved Custom-Fit, Assembled, Spiral Core, 8.65mm, Black, Chevy, 454, Set

Part Number: MOR-73712

Not Yet Reviewed

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Spark Plug Wire Set, Ultra 40 Race Wire, Unsleeved, Fits Moroso Part No.72394, LS2 and Later Coils, GM LS Coil Mount Bracket, Set

Part Number: MOR-73733

Not Yet Reviewed

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Spark Plug Wires, Ultra 40 Unsleeved Custom-Fit, Assembled, Spiral Core, 8.65mm, Black, Ford, 289, 302, Set

Part Number: MOR-73719

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Spark Plug Wires, Ultra 40 Unsleeved Custom-Fit, Assembled, Spiral Core, 8.65mm, Black, Chevy, Small Block, Set

Part Number: MOR-73708

Not Yet Reviewed

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Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Black, Chevy, Small Block, Wires over Valve Cover, Set

Part Number: MOR-73725

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Spark Plug Wires, Ultra 40 Unsleeved Custom-Fit, Assembled, Spiral Core, 8.65mm, Black, Ford, 429, 460, Set

Part Number: MOR-73717

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Blue, 180 Degree Boots, Chevy, Big Block, Set

Part Number: MOR-73668

Not Yet Reviewed

Estimated Ship Date: Jan 8, 2026 if ordered today

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Estimated Ship Date: Jan 8, 2026 if ordered today

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Blue, 45 Degree Boots, Ford, 429-460, Set

Part Number: MOR-73674

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Jan 6, 2026 if ordered today

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Estimated Ship Date: Jan 6, 2026 if ordered today

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Red, 90 Degree Boots, GM with Chevy, Small Block, Set

Part Number: MOR-73683

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Jan 8, 2026 if ordered today

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Estimated Ship Date: Jan 8, 2026 if ordered today

Spark Plug Wires, Ultra 40 Unsleeved Custom-Fit, Assembled, Spiral Core, 8.65mm, Black, Chevy, Big Block, Set

Part Number: MOR-73710

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

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Estimated Ship Date: Jan 6, 2026 if ordered today

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

Part Number: MOR-73663

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Spark Plug Wires, Ultra 40, Spiral Core, 7.0mm, Black, 180 Degree Boots, Chevy, Set

Part Number: MOR-73704

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

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Estimated Ship Date: Jan 6, 2026 if ordered today

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Red, 180 Degree Boots, Chevy, Big Block, Set

Part Number: MOR-73687

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 8, 2026 if ordered today

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Estimated Ship Date: Jan 8, 2026 if ordered today

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