MSD 5099 DynaForce High-Torque Gear Reduction Starter - Red

The MSD 5099 DynaForce High-Torque Starter is a premium performance starter engineered to reliably crank even the most demanding high-compression engines. Built with all-new components and hand-assembled in the USA, every DynaForce starter is dyno-tested and blueprinted before leaving the factory to ensure maximum performance and reliability.

At the heart of the 5099 is a 3.4 HP electric motor driving a 4.4:1 gear reduction system, delivering exceptional torque to the engine's ring gear — providing the cranking force needed to start high-compression engines up to 18:1 compression ratio. The armature is precision-balanced during assembly and rides on two ball bearings for smooth, consistent engagement across thousands of starts.

Key Features:

• 3.4 HP motor with 4.4:1 gear reduction for superior high-torque cranking power
• Handles high-compression engines up to 18:1 compression ratio
• Precision-balanced armature supported by two ball bearings for smooth engagement and long service life
• Downsized, compact housing designed to clear most headers and oil pans
• Machined billet aluminum mounting block that can be clocked in multiple positions to accommodate tight-clearance applications
• Powder-coated in MSD red for a durable, corrosion-resistant finish
• Specifically designed for AMC engines (except 4.0L)
• Dyno-tested and blueprinted at the factory for out-of-the-box reliability

The MSD 5099 DynaForce Starter is the ideal upgrade for performance and racing applications where a stock starter simply won't provide the cranking reliability needed. Its compact design minimizes fitment issues, while the clockable billet mount ensures installation flexibility even in the tightest engine bays.