S&S Cycle
S&S Cycle HI-4N Ignition Module — Fits 1977-1984 Harley-Davidson Shovelhead & Evolution Models
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S&S Cycle HI-4N Ignition Module — Fits 1977-1984 Harley-Davidson Shovelhead & Evolution Models
S&S Cycle

S&S Cycle HI-4N Ignition Module — Fits 1977-1984 Harley-Davidson Shovelhead & Evolution Models

SKU: SSC550-0501

About S&S Cycle S&S Cycle engineers high-quality automotive parts and ...Read more

Price:
$411.95
4110 ENTRIES10X
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

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About S&S Cycle

S&S Cycle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full S&S Cycle lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Optimize Your Ride with S&S Cycle HI-4N Ignition Module

Elevate the performance of your 1977-1984 Harley-Davidson Shovelhead or early Evolution engine with the S&S Cycle HI-4N Ignition Module. This advanced ignition system is engineered to provide precise timing and a strong spark, crucial for maximizing horsepower and torque. The HI-4N offers multiple advance curves, allowing you to fine-tune your engine's performance for various riding conditions and modifications. Its robust design ensures reliability, making it an ideal upgrade or replacement for older, less efficient ignition units.

Key Features & Benefits:

  • Improved Engine Performance: Delivers precise timing for optimal power and efficiency.
  • Selectable Advance Curves: Customize your ignition timing to match your engine's setup and riding style.
  • Enhanced Reliability: Built with high-quality components for long-term durability.
  • Easy Installation: Designed for a straightforward fitment on specified Harley-Davidson models.
  • Broad Fitment: Compatible with a wide range of 1977-1984 Harley-Davidson Shovelhead and Evolution engines.

Invest in the S&S Cycle HI-4N Ignition Module to unlock the full potential of your classic Harley. Get yours today at GGCRACING and experience the difference in performance and reliability.

About S&S Cycle

S&S Cycle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full S&S Cycle lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Optimize Your Ride with S&S Cycle HI-4N Ignition Module

Elevate the performance of your 1977-1984 Harley-Davidson Shovelhead or early Evolution engine with the S&S Cycle HI-4N Ignition Module. This advanced ignition system is engineered to provide precise timing and a strong spark, crucial for maximizing horsepower and torque. The HI-4N offers multiple advance curves, allowing you to fine-tune your engine's performance for various riding conditions and modifications. Its robust design ensures reliability, making it an ideal upgrade or replacement for older, less efficient ignition units.

Key Features & Benefits:

  • Improved Engine Performance: Delivers precise timing for optimal power and efficiency.
  • Selectable Advance Curves: Customize your ignition timing to match your engine's setup and riding style.
  • Enhanced Reliability: Built with high-quality components for long-term durability.
  • Easy Installation: Designed for a straightforward fitment on specified Harley-Davidson models.
  • Broad Fitment: Compatible with a wide range of 1977-1984 Harley-Davidson Shovelhead and Evolution engines.

Invest in the S&S Cycle HI-4N Ignition Module to unlock the full potential of your classic Harley. Get yours today at GGCRACING and experience the difference in performance and reliability.

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