Longacre Magneto Switch 40 Amp 12V with Weatherproof Cover — Universal Ignition

SKU: BJFG_52-45440
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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

Product Details

Product Description
Part Numbers
Sizing & Fit

About Longacre

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

Watch in action

High-Amperage Magneto Ignition Control

Take control of your ignition system with the Longacre Magneto Switch. Rated for 40 amps at 12V, this heavy-duty toggle switch is built to handle the demands of high-performance racing engines. Featuring a 4-terminal design, it provides the robust connectivity required for magneto ignition setups, ensuring consistent spark and reliable engine operation under load.

Technical Specifications

  • Amperage Rating: 40 Amps
  • Voltage: 12V
  • Terminals: 4-terminal configuration
  • Included: Weatherproof silicone cover for added protection
  • Application: Magneto ignition systems and high-draw accessories

Safety and reliability are paramount in motorsports. This switch comes equipped with a weatherproof cover, protecting the internal contacts from moisture, dust, and vibration-induced failure. The rugged construction ensures that the switch remains responsive even in the most demanding racing environments, from drag strips to circle tracks. Its straightforward design makes it an excellent choice for both new builds and replacement of aging, unreliable ignition switches. When every millisecond counts, you need an ignition switch that performs without compromise. Trust the quality and engineering of Longacre for your next electrical project, available now at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Longacre

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

Watch in action

High-Amperage Magneto Ignition Control

Take control of your ignition system with the Longacre Magneto Switch. Rated for 40 amps at 12V, this heavy-duty toggle switch is built to handle the demands of high-performance racing engines. Featuring a 4-terminal design, it provides the robust connectivity required for magneto ignition setups, ensuring consistent spark and reliable engine operation under load.

Technical Specifications

  • Amperage Rating: 40 Amps
  • Voltage: 12V
  • Terminals: 4-terminal configuration
  • Included: Weatherproof silicone cover for added protection
  • Application: Magneto ignition systems and high-draw accessories

Safety and reliability are paramount in motorsports. This switch comes equipped with a weatherproof cover, protecting the internal contacts from moisture, dust, and vibration-induced failure. The rugged construction ensures that the switch remains responsive even in the most demanding racing environments, from drag strips to circle tracks. Its straightforward design makes it an excellent choice for both new builds and replacement of aging, unreliable ignition switches. When every millisecond counts, you need an ignition switch that performs without compromise. Trust the quality and engineering of Longacre for your next electrical project, available now at GGCRACING.

Product Details

Product Description

About Longacre

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

Watch in action

High-Amperage Magneto Ignition Control

Take control of your ignition system with the Longacre Magneto Switch. Rated for 40 amps at 12V, this heavy-duty toggle switch is built to handle the demands of high-performance racing engines. Featuring a 4-terminal design, it provides the robust connectivity required for magneto ignition setups, ensuring consistent spark and reliable engine operation under load.

Technical Specifications

  • Amperage Rating: 40 Amps
  • Voltage: 12V
  • Terminals: 4-terminal configuration
  • Included: Weatherproof silicone cover for added protection
  • Application: Magneto ignition systems and high-draw accessories

Safety and reliability are paramount in motorsports. This switch comes equipped with a weatherproof cover, protecting the internal contacts from moisture, dust, and vibration-induced failure. The rugged construction ensures that the switch remains responsive even in the most demanding racing environments, from drag strips to circle tracks. Its straightforward design makes it an excellent choice for both new builds and replacement of aging, unreliable ignition switches. When every millisecond counts, you need an ignition switch that performs without compromise. Trust the quality and engineering of Longacre for your next electrical project, available now at GGCRACING.

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