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Can-Bus Hub 4-Connections
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MSD IGNITIONPART NUMBER: 121-7740

Can-Bus Hub 4-Connections

$14035$155.95You Save$15.60
ShippingShips on Sep 04, 2026
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Can-Bus Accessories
    Can-Bus Hub
  • 4-Connections
  • Allows Module Connection to 121-7730 & 121-77303
  • Red

    This hub will allow users of the Power Grid System Controller to connect other MSD modules to the system for added features. The hub uses CAN-Bus technology that can be stacked so that racers will never run out of spot to plug in modules. Each hub has 4 plug in points with a single output so that one hub can be plugged into another.

    To add modules to the system, builders simply plug in the 4-Connector CAN-Bus Hub to the System Controller and then plug the modules into the Hub. The CAN-Bus Hub is required to plug in any modules.

    Note: Not legal for sale or use on pollution-controlled vehicles.

    The Ultimate in RPM and Timing Controls

    Take total control of your ignition system with the MSD Power Grid Ignition System, available at JEGS—a high-performance solution built for racers and serious enthusiasts who demand precision and consistency. The MSD Ignition Power Grid platform is engineered to deliver advanced spark control, real-time tuning, and integrated data logging, making it a must-have for anyone optimizing engine performance. Whether you’re building a competitive drag car or fine-tuning a street/strip machine, the MSD Power Grid Ignition System provides the accuracy and adjustability needed to unlock maximum horsepower and reliability.

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    Performance Benefits & Key Features

    The MSD Power Grid Ignition System is designed around capacitive discharge technology, delivering high-output spark energy for more efficient combustion and improved throttle response. With programmable timing curves, launch retard, boost timing control, and multiple rev limiters, this system allows users to dial in ignition settings for specific racing conditions. These performance ignition systems also feature advanced data logging capabilities, enabling racers to analyze run data and make informed tuning adjustments.

    Constructed with durable, heat-resistant components and compact housings, Power Grid units are built to withstand harsh racing environments. Key specifications often include high-voltage output, precise timing accuracy, and user-friendly software interfaces for seamless tuning. The result is more consistent passes, improved engine efficiency, and greater control over critical ignition parameters. Whether you're chasing quicker ETs or smoother power delivery, the Power Grid system delivers measurable performance gains.

    Fitment, Compatibility & Applications

    Designed for broad fitment and compatibility, the MSD Power Grid Ignition System integrates with a wide range of engine platforms, including GM LS, Ford modular, and Mopar performance engines. These ignition control units work with carbureted and fuel-injected setups and are compatible with crank triggers, distributors, and various ignition components. This flexibility makes them ideal for drag racing, street performance builds, and high-horsepower applications.

    The system is especially popular among racers who require precise ignition timing under boost or nitrous, as well as enthusiasts upgrading from traditional ignition modules. From classic muscle cars to modern performance vehicles and dedicated race builds, the Power Grid system supports diverse applications where reliability and control are critical. Its scalable design also allows users to expand functionality with additional modules and accessories.

    Backed by MSD’s reputation for engineering excellence and race-proven durability—and trusted by performance enthusiasts shopping at JEGS—the Power Grid Ignition System is a proven upgrade for serious builds. Explore the available options to find the right configuration for your setup and take your ignition performance to the next level.

Part TypeIgnition Control Module Connector
Product LineMSD Power Grid Ignition System
BrandMSD IGNITION
Package Height3.9
Package Width4.6
Package Length7.4
Weight0.71 PG
Part CategoryPerformance Parts
Junction Block FinishRed
Junction Block Type4-wire connector
QuantitySold individually
Part FitmentSemi Universal
Junction Block MaterialPlastic
Vendor Part Number7740
Package Qty1
Package TypeEA
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Items You Need

7730 Power Grid Ignition System Controller [Red]

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7730 Power Grid Ignition System Controller [Red]

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Some parts are not legal for use in California or other states with similar laws / regulations
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