Moroso High Performance Suppression Ignition Wire Set - Harley Big Twin
About Moroso
Moroso has manufactured racing components in Connecticut since 1968, supplying engine, chassis and shop products developed through motorsport.
Give your classic Harley-Davidson Big Twin a modern ignition upgrade with Moroso High Performance Suppression Ignition Wires. Featuring a glass-fiber core and 8mm silicone jacket, these wires are built to handle extreme heat and vibration while delivering a consistent spark.
Why riders pick this
- Glass center core with high tensile strength
- 8mm silicone jacket reduces heat and chafing
- Extra-thick EPDM insulation for greater dielectric strength
- Locking stainless steel plug terminals resist vibration
- High-temperature silicone boots withstand up to 600°F
- Nylon pull tape for terminal retention
For riders of 1965-1978 Big Twin Harleys, these Moroso High Performance Suppression Ignition Wires are designed to bring enhanced reliability to your spark delivery. They are engineered to perform under the demanding conditions of a V-twin engine, ensuring that your ignition system is robust and efficient, even when paired with modern components.
Resilient Spark Transmission
- Glass center core provides high tensile strength for exceptional durability
- 8mm silicone jacket reduces heat and resists chafing for longer life
- Extra-thick EPDM insulation layer offers superior dielectric strength
- Locking stainless steel plug terminals resist vibration, ensuring a secure connection
- High-temperature silicone boots withstand up to 600°F, protecting against engine heat
Classic Fitment, Modern Performance
Moroso has engineered these wires to not only fit your vintage Big Twin but also to be compatible with modern Harley ION sensing coils, offering versatility for various setups. Made in the USA, this set provides a reliable upgrade that maintains the classic aesthetic while boosting your bike's ignition performance. Experience a smoother running engine with improved spark delivery.
Specifications
- Brand: Moroso
- Manufacturer Part #: 27283
- UPC: 84663272837
- Wire Length: 13.5 in
- Weight: 0.5812 lbs
Common questions
Will these work with my modern Harley's ION sensing coils?
Yes, Moroso wires are fully compatible with ION sensing coils used on virtually all late-model Harley-Davidson bikes, even when installed on older Big Twins.
What is the benefit of a glass-fiber core?
The glass-fiber core provides high tensile strength, making the wires very durable and resistant to stretching or breaking under engine vibration and heat.
Do I need to re-tune my engine after installing these wires?
Typically, upgrading ignition wires alone does not necessitate a re-tune. However, if you're making other significant engine modifications, a dyno tune is always recommended for optimal performance.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Moroso |
| TYPE | Electrical |
| SKU | 82-7283 |
| WEIGHT | 0.58 lb |
