The RM30502H is an advanced MOSFET voltage regulator rectifier for the Suzuki GSXR 600, 750 and 1000, Boulevard C50 and C90, and V-Strom 650 from 2001 to 2019. Unlike the original diode style regulator it uses MOSFET switching, which runs significantly cooler, and it carries overheat protection - rather than burning out it simply shuts down for a while and cools off. Heat is what kills conventional regulators, so this is the single biggest upgrade you can make to an ageing Suzuki charging circuit.
It is a direct replacement for your original unit: plug-and-play, direct fit and easy to install, with no assembly required. Higher grade electrical components and an improved heat sink lift charging capability beyond the OEM equipment, and every product shipped is tested. The opposite connector for the main harness side is supplied as well, as that plug is often melted, corroded or defective and is a major cause of repeat electrical faults.
Key Features
- MOSFET type regulator rectifier, not a diode design
- Runs cooler than OEM diode style regulators
- Built-in overheat protection - shuts down instead of burning out
- Direct replacement for your original unit
- Plug-and-play, direct fit, easy installation
- No assembly required
- Improved heat sink and charging capability
- Higher grade of electrical components
- Matching main harness side connector included
- All products tested before shipping
Technical Specs
| Specification |
Detail |
| Part number |
RM30502H |
| Type |
MOSFET regulator rectifier |
| Width |
92 mm |
| Length |
92 mm |
| Height |
30 mm |
| Fixation holes, centre to centre |
75 mm |
| Wire length |
250 mm |
| Number of plugs |
2 |
| Number of pins |
7 |
| Number of wires |
7 |
| Minimum charging voltage |
14.5 V +/- 0.5 V |
| Maximum charging current |
50 A / 500 W |
| Open circuit voltage |
Under 15 V |
| Operating temperature |
-20 C to 85 C |
Vehicle Fitment Guide
| Make & Model |
Years |
| Suzuki GSXR 600 |
2001-2019 |
| Suzuki GSXR 750 |
2001-2019 |
| Suzuki GSXR 1000 |
2001-2019 |
| Suzuki Boulevard C50 |
2001-2019 |
| Suzuki Boulevard C90 |
2001-2019 |
| Suzuki V-Strom 650 |
2001-2019 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 32800-02H00 |
Suzuki |
| 32800-15H00 |
Suzuki |
| 32800-15H01 |
Suzuki |
| 32800-15H10 |
Suzuki |
| 32800-15H11 |
Suzuki |
| 32800-18H00 |
Suzuki |
| 32800-21H00 |
Suzuki |
| 32800-41F00 |
Suzuki |
| 32800-41F01 |
Suzuki |
| 32800-41F02 |
Suzuki |
| 32800-41F10 |
Suzuki |
| 32800-41F11 |
Suzuki |
| 32800-41G00 |
Suzuki |
| 32800-41G10 |
Suzuki |
| 32800-47H00 |
Suzuki |
| 32800-47H10 |
Suzuki |
| 32800-47H30 |
Suzuki |
Frequently Asked Questions
Does it fit without modification?
Yes. The RM30502H is a direct replacement for the original unit, plug-and-play and direct fit, with no assembly required. The mounting holes are 75 mm apart centre to centre and the two plugs carry the same seven wires as the factory regulator.
What is included?
One RM30502H MOSFET regulator rectifier with seven wires on 250 mm leads across two plugs, plus the opposite connector for the main harness side so you can renew a damaged loom plug at the same time.
What is the advantage of a MOSFET regulator?
MOSFET switching wastes far less energy as heat than the diode design used in the original units, so the regulator runs cooler and lasts longer. This one also has overheat protection: instead of burning up under extreme load, it turns off temporarily and cools down before resuming.
How do I tell the old regulator has failed?
Look for a battery that will not hold charge, charging voltage that never settles around 14.5 V at the battery, an over-charged battery that boils or swells, lights that dim or flicker with revs, and a regulator body that runs extremely hot. Melted or discoloured connector pins are a further warning sign.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
