Rmstator RMS900-108388 MOSFET Voltage Regulator Upgrade with Bypass Harness

The Rmstator RMS900-108388 is a red machined aluminum MOSFET voltage regulator upgrade designed for superior heat dissipation in powersports charging systems. This advanced regulator kit includes a bypass harness for direct installation, eliminating common points of electrical failure.

Advanced MOSFET Technology:

• Runs 33% cooler than standard cast regulator housings after 10 minutes of operation
• Significantly cooler operation compared to all OEM diode-style regulators
• Built-in overheat protection prevents burnout - unit temporarily shuts off to cool down rather than failing
• Reduces load on the stator, improving efficiency and fuel economy
• Delivers steadier, smoother charging power to your battery

Premium Construction:

• CNC machined billet aluminum heatsink in distinctive red finish
• Higher grade electrical components exceed OEM specifications
• Direct plug-and-play replacement for easy installation
• Includes bypass harness to eliminate common failure points in factory wiring
• All products are tested before shipping

Technical Specifications:

• Minimum charging voltage: 14.5V ± 0.5V
• Maximum charging current: 50A / 500W
• Open circuit voltage: 15V
• Operating temperature range: -20°C to 85°C
• Compatible with lithium-ion batteries

What's Included:

• Red machined aluminum MOSFET voltage regulator
• Bypass harness with connectors
• Mounting hardware

This regulator upgrade is engineered specifically for three-phase permanent magnet charging systems and represents a significant improvement over factory voltage regulators. The included bypass harness addresses melted, corroded, or defective connectors that are a major cause of repetitive electrical issues. Important: Battery condition is critical for proper operation - always fully charge your battery before installation and testing.

Replaces OEM part numbers 2203637 and 4010670 on applicable models.