Moroso 28645 Ultra 40 Spark Plug Wire Set Red Milwaukee 8 Softail 2018+

The Moroso 28645 Ultra 40 Spark Plug Wire Set is a direct-replacement, high-performance ignition wire set engineered specifically for 2018 and newer Harley-Davidson Milwaukee-Eight Softail models. Built to the same standard as Moroso's race-proven ignition technology, this red wire set delivers maximum spark energy transfer while dramatically reducing electromagnetic and radio frequency interference.

Key Features:

• 8.65mm diameter with a spiral-wound nickel/copper alloy conductor delivering a class-leading 40 ohms of resistance per foot for optimized spark energy and minimal EMI/RFI noise
• Kevlar-reinforced core for superior strength and durability
• Silicone plug boots rated to withstand temperatures up to 600°F, resisting heat damage and chafing
• Locking stainless steel terminals maintain a secure connection under high vibration conditions
• EPDM outer jacket provides UV stability and resistance to cracking
• Fully compatible with Harley-Davidson ION sensing coils used on late-model Milwaukee-Eight engines
• Made in the USA to Moroso's stringent quality standards
• Bold red color for a custom, performance look

Compatible Milwaukee-Eight Softail Models (2018–UP): FLDE Softail Deluxe, FLFB Fat Boy, FLFBS Fat Boy 114, FLHC Heritage Classic, FLHCS Heritage Classic 114, FLSB Sport Glide, FLSL Softail Slim, FXBB Street Bob, FXBR Breakout, FXBRS Breakout 114, FXFB Fat Bob, FXFBS Fat Bob 114, FXLR Low Rider

Moroso Ultra 40 ignition wire technology is trusted at the highest levels of motorsport, from Top Fuel dragsters to the NASCAR Cup Series. This Softail-specific set brings that same engineering to your Milwaukee-Eight powered bike, ensuring reliable, consistent ignition performance mile after mile.