Holley 558-499 Terminator X-Max Automatic Transmission Controller — Fits GM 6L80/6L90

SKU: BBVL_558-499
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Unleash Precision Control for Your GM 6L80/6L90 with Holley Terminator ...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
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Sizing & Fit

Unleash Precision Control for Your GM 6L80/6L90 with Holley Terminator X-Max

Unleash the full potential of your modern GM automatic transmission with the Holley 558-499 Terminator X-Max Transmission Controller. Specifically engineered for GM 6L80 and 6L90 automatic transmissions, this advanced module provides unparalleled control over shift points, line pressure, and torque converter lock-up. Whether you're performing an engine swap, building a high-performance street machine, or optimizing a race vehicle, the Terminator X-Max ensures your transmission operates with maximum efficiency and responsiveness.

Advanced Features for Superior Drivability

The Holley Terminator X-Max controller is more than just a simple module; it's a comprehensive transmission management system. It comes complete with a digital display for real-time monitoring and adjustments, along with a robust wiring harness for a straightforward installation. Its intuitive interface allows for easy customization of shift strategies, adapting to your driving style and vehicle's specific demands. Experience smoother shifts, improved acceleration, and enhanced durability.

  • GM 6L80/6L90 Specific: Optimized for modern GM automatic transmissions.
  • Digital Display Included: Provides real-time data and easy parameter adjustments.
  • Complete Wiring Harness: Simplifies installation and ensures reliable connectivity.
  • Customizable Shift Points: Tailor your transmission's behavior for any application.
  • Enhanced Performance: Improves drivability, acceleration, and transmission longevity.

Engineered for Performance and Reliability

Holley's commitment to performance and reliability shines through in the 558-499 Terminator X-Max controller. Built with high-quality components and advanced algorithms, it delivers precise, consistent control even under extreme conditions. This ensures your valuable transmission is protected while delivering optimal power to the wheels. It's the ultimate solution for integrating a 6L80 or 6L90 into a new chassis or maximizing its potential in an existing one.

Specifications:

  • Part Number: Holley 558-499
  • Application: GM 6L80 / 6L90 Automatic Transmissions
  • Type: Automatic Transmission Control Module Kit
  • Includes: Controller, Digital Display, Wiring Harness

Take command of your GM 6L80 or 6L90 transmission like never before with the Holley Terminator X-Max 558-499 controller, available at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

Unleash Precision Control for Your GM 6L80/6L90 with Holley Terminator X-Max

Unleash the full potential of your modern GM automatic transmission with the Holley 558-499 Terminator X-Max Transmission Controller. Specifically engineered for GM 6L80 and 6L90 automatic transmissions, this advanced module provides unparalleled control over shift points, line pressure, and torque converter lock-up. Whether you're performing an engine swap, building a high-performance street machine, or optimizing a race vehicle, the Terminator X-Max ensures your transmission operates with maximum efficiency and responsiveness.

Advanced Features for Superior Drivability

The Holley Terminator X-Max controller is more than just a simple module; it's a comprehensive transmission management system. It comes complete with a digital display for real-time monitoring and adjustments, along with a robust wiring harness for a straightforward installation. Its intuitive interface allows for easy customization of shift strategies, adapting to your driving style and vehicle's specific demands. Experience smoother shifts, improved acceleration, and enhanced durability.

  • GM 6L80/6L90 Specific: Optimized for modern GM automatic transmissions.
  • Digital Display Included: Provides real-time data and easy parameter adjustments.
  • Complete Wiring Harness: Simplifies installation and ensures reliable connectivity.
  • Customizable Shift Points: Tailor your transmission's behavior for any application.
  • Enhanced Performance: Improves drivability, acceleration, and transmission longevity.

Engineered for Performance and Reliability

Holley's commitment to performance and reliability shines through in the 558-499 Terminator X-Max controller. Built with high-quality components and advanced algorithms, it delivers precise, consistent control even under extreme conditions. This ensures your valuable transmission is protected while delivering optimal power to the wheels. It's the ultimate solution for integrating a 6L80 or 6L90 into a new chassis or maximizing its potential in an existing one.

Specifications:

  • Part Number: Holley 558-499
  • Application: GM 6L80 / 6L90 Automatic Transmissions
  • Type: Automatic Transmission Control Module Kit
  • Includes: Controller, Digital Display, Wiring Harness

Take command of your GM 6L80 or 6L90 transmission like never before with the Holley Terminator X-Max 558-499 controller, available at GGCRACING.

Product Details

Product Description

Unleash Precision Control for Your GM 6L80/6L90 with Holley Terminator X-Max

Unleash the full potential of your modern GM automatic transmission with the Holley 558-499 Terminator X-Max Transmission Controller. Specifically engineered for GM 6L80 and 6L90 automatic transmissions, this advanced module provides unparalleled control over shift points, line pressure, and torque converter lock-up. Whether you're performing an engine swap, building a high-performance street machine, or optimizing a race vehicle, the Terminator X-Max ensures your transmission operates with maximum efficiency and responsiveness.

Advanced Features for Superior Drivability

The Holley Terminator X-Max controller is more than just a simple module; it's a comprehensive transmission management system. It comes complete with a digital display for real-time monitoring and adjustments, along with a robust wiring harness for a straightforward installation. Its intuitive interface allows for easy customization of shift strategies, adapting to your driving style and vehicle's specific demands. Experience smoother shifts, improved acceleration, and enhanced durability.

  • GM 6L80/6L90 Specific: Optimized for modern GM automatic transmissions.
  • Digital Display Included: Provides real-time data and easy parameter adjustments.
  • Complete Wiring Harness: Simplifies installation and ensures reliable connectivity.
  • Customizable Shift Points: Tailor your transmission's behavior for any application.
  • Enhanced Performance: Improves drivability, acceleration, and transmission longevity.

Engineered for Performance and Reliability

Holley's commitment to performance and reliability shines through in the 558-499 Terminator X-Max controller. Built with high-quality components and advanced algorithms, it delivers precise, consistent control even under extreme conditions. This ensures your valuable transmission is protected while delivering optimal power to the wheels. It's the ultimate solution for integrating a 6L80 or 6L90 into a new chassis or maximizing its potential in an existing one.

Specifications:

  • Part Number: Holley 558-499
  • Application: GM 6L80 / 6L90 Automatic Transmissions
  • Type: Automatic Transmission Control Module Kit
  • Includes: Controller, Digital Display, Wiring Harness

Take command of your GM 6L80 or 6L90 transmission like never before with the Holley Terminator X-Max 558-499 controller, available at GGCRACING.

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