Sumax S40634 10.4mm Pro Race Spark Plug Wires Blue 1999-2008 Harley FI

The Sumax S40634 Pro Race spark plug wire set delivers high-performance ignition for 1999-2008 Harley-Davidson fuel-injected models. These premium 10.4mm diameter wires feature the Taylor Cable 409 Pro Race design, engineered for superior spark delivery and distinctive styling with their vibrant blue silicone jacket.

Key Features:

• 10.4mm diameter high-performance ignition wires for aggressive appearance and maximum spark energy
• Spiral-wound core with 350 ohms per foot resistance for optimal EMI/RFI suppression
• Continuous heat protection up to 600°F with 102,000 volts dielectric strength
• 100% silicone construction maintains flexibility and vibrant blue color throughout the life of the wire
• Low-profile silicone Pro Boots with vibration-proof double spring locking terminals
• Custom-fit design for 1999-2008 Harley-Davidson fuel injection models
• Delivers maximum fire power without radio interference
• Compatible with electronic and multi-spark discharge ignition systems

Made in the USA, these custom-fit wire sets provide enhanced horsepower and torque compared to OEM wires while offering up to 10 times less resistance than standard resistor core wires. Ideal for street performance and racing applications.