Holley 7.25" 12-1X Crank Trigger Kit - Hall Effect - GM LS-Series Engines

SKU: BBVL_556-175
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About Holley Holley is the legendary American carburetor and fuel-injection ...Read More

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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 Holley

Holley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.

Holley 7.25" 12-1X Crank Trigger Kit: Enhanced Timing for GM LS Engines

Optimize the ignition and fuel timing of your GM LS-Series engine with the Holley 7.25" 12-1X Crank Trigger Kit. This specialized kit is engineered to provide an exceptionally stable and accurate crankshaft position signal, which is critical for high-performance LS applications, especially those with limited space or specific balancer requirements. Utilizing a robust flying magnet design and a precise Hall Effect sensor, this system offers a significant upgrade over factory timing references.

Precision Engineering for LS:

  • Specific LS Fitment: Designed for GM LS engines utilizing a 7.25-inch harmonic balancer, offering an ideal solution for various build configurations.
  • Hall Effect Sensor: Delivers a crisp, clean, and highly accurate signal for precise ignition and fuel injection timing, essential for modern engine control.
  • Flying Magnet Reliability: Ensures consistent signal generation and exceptional durability, making it suitable for both street and track use.
  • Comprehensive Kit: Includes the trigger wheel, Hall Effect pickup, application-specific mounting bracket, and all necessary hardware for a complete and secure installation.

This Holley crank trigger system is crucial for eliminating timing inaccuracies that can plague high-output LS engines. By providing your ECU with the most accurate crankshaft position data, you'll experience improved engine responsiveness, more consistent power delivery, and enhanced overall engine stability. It's an essential component for maximizing the potential of your LS platform.

Specifications:

  • Brand: Holley
  • Application: GM LS-Series Engines
  • Balancer Size: 7.25 inches
  • Trigger Type: Flying Magnet
  • Sensor Type: Hall Effect
  • Components: Trigger Wheel, Pickup, Bracket, Hardware
  • Color: Silver
  • Part Number: 556-175

Achieve unparalleled timing accuracy for your LS engine with the Holley 7.25" 12-1X Crank Trigger Kit, available at GGCRACING.COM.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Holley

Holley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.

Holley 7.25" 12-1X Crank Trigger Kit: Enhanced Timing for GM LS Engines

Optimize the ignition and fuel timing of your GM LS-Series engine with the Holley 7.25" 12-1X Crank Trigger Kit. This specialized kit is engineered to provide an exceptionally stable and accurate crankshaft position signal, which is critical for high-performance LS applications, especially those with limited space or specific balancer requirements. Utilizing a robust flying magnet design and a precise Hall Effect sensor, this system offers a significant upgrade over factory timing references.

Precision Engineering for LS:

  • Specific LS Fitment: Designed for GM LS engines utilizing a 7.25-inch harmonic balancer, offering an ideal solution for various build configurations.
  • Hall Effect Sensor: Delivers a crisp, clean, and highly accurate signal for precise ignition and fuel injection timing, essential for modern engine control.
  • Flying Magnet Reliability: Ensures consistent signal generation and exceptional durability, making it suitable for both street and track use.
  • Comprehensive Kit: Includes the trigger wheel, Hall Effect pickup, application-specific mounting bracket, and all necessary hardware for a complete and secure installation.

This Holley crank trigger system is crucial for eliminating timing inaccuracies that can plague high-output LS engines. By providing your ECU with the most accurate crankshaft position data, you'll experience improved engine responsiveness, more consistent power delivery, and enhanced overall engine stability. It's an essential component for maximizing the potential of your LS platform.

Specifications:

  • Brand: Holley
  • Application: GM LS-Series Engines
  • Balancer Size: 7.25 inches
  • Trigger Type: Flying Magnet
  • Sensor Type: Hall Effect
  • Components: Trigger Wheel, Pickup, Bracket, Hardware
  • Color: Silver
  • Part Number: 556-175

Achieve unparalleled timing accuracy for your LS engine with the Holley 7.25" 12-1X Crank Trigger Kit, available at GGCRACING.COM.

Product Details

Product Description

About Holley

Holley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.

Holley 7.25" 12-1X Crank Trigger Kit: Enhanced Timing for GM LS Engines

Optimize the ignition and fuel timing of your GM LS-Series engine with the Holley 7.25" 12-1X Crank Trigger Kit. This specialized kit is engineered to provide an exceptionally stable and accurate crankshaft position signal, which is critical for high-performance LS applications, especially those with limited space or specific balancer requirements. Utilizing a robust flying magnet design and a precise Hall Effect sensor, this system offers a significant upgrade over factory timing references.

Precision Engineering for LS:

  • Specific LS Fitment: Designed for GM LS engines utilizing a 7.25-inch harmonic balancer, offering an ideal solution for various build configurations.
  • Hall Effect Sensor: Delivers a crisp, clean, and highly accurate signal for precise ignition and fuel injection timing, essential for modern engine control.
  • Flying Magnet Reliability: Ensures consistent signal generation and exceptional durability, making it suitable for both street and track use.
  • Comprehensive Kit: Includes the trigger wheel, Hall Effect pickup, application-specific mounting bracket, and all necessary hardware for a complete and secure installation.

This Holley crank trigger system is crucial for eliminating timing inaccuracies that can plague high-output LS engines. By providing your ECU with the most accurate crankshaft position data, you'll experience improved engine responsiveness, more consistent power delivery, and enhanced overall engine stability. It's an essential component for maximizing the potential of your LS platform.

Specifications:

  • Brand: Holley
  • Application: GM LS-Series Engines
  • Balancer Size: 7.25 inches
  • Trigger Type: Flying Magnet
  • Sensor Type: Hall Effect
  • Components: Trigger Wheel, Pickup, Bracket, Hardware
  • Color: Silver
  • Part Number: 556-175

Achieve unparalleled timing accuracy for your LS engine with the Holley 7.25" 12-1X Crank Trigger Kit, available at GGCRACING.COM.

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