Rmstator RMS900-105941 90W AC to DC Lighting Stator and Voltage Regulator Charging System Conversion Kit

The Rmstator RMS900-105941 is a complete 90-watt AC to DC charging system conversion kit that includes a brand-new aftermarket lighting stator and voltage regulator rectifier. Designed as a direct plug-and-play replacement, this kit upgrades the stock charging system to deliver the additional power needed to run auxiliary lighting, accessories, and ensure reliable starting.

With the rise of lightweight LED lighting, powering accessories on off-road motorcycles has become more practical — but the factory AC electrical system often lacks the capacity to support them reliably. This kit converts the charging system to DC output, providing a stable 12V supply that powers accessories only while the engine is running. A built-in adjustable shut-off delay automatically cuts power to lights after the engine stops, eliminating the risk of a dead battery.

Stator Specifications:

• Output: 90W AC to DC conversion
• Interior diameter: 34 mm | Exterior diameter: 72 mm | Thickness: 15 mm
• Wire configuration: 6 wires, 2 plugs, 6 pins
• Wire-to-wire resistance — Alternator (Yellow to Yellow): 0.4 ohms ±20%
• Wire-to-wire resistance — Pickup (Green/White to Blue/White): 260 ohms ±20%
• Wire-to-wire resistance — Source (Blue to Red): 20 ohms ±20%
• Highest-grade lamination materials and copper windings
• Rubber grommet included

Voltage Regulator Specifications:

• Width: 53.6 mm | Length: 79 mm | Height: 22 mm
• Minimum charging voltage: 14.5V ±0.5V
• Maximum charging current: 50A / 500W
• Open circuit voltage: 15V
• Operating temperature: -20°C to 85°C
• 5 wires

Kit Features:

• Brand-new aftermarket components — not remanufactured
• Direct plug-and-play fitment — no cutting or splicing required
• Built-in relay activates 12V DC output only when engine is running
• Adjustable automatic shut-off delay for lights
• All units tested before shipping
• Replaces OEM part number: 105941-R00 / 31120-MEY-672

Installation Notes: Stator wire colors may differ from the OEM unit; do not alter the wiring order. Always apply thread-locking compound when bolting in the stator. If a pickup coil is present, verify the air gap is as close as possible but no less than 0.010 inches. Ensure the battery is fully charged and load-tested before installation — no stator or regulator can function correctly with a weak battery.