Voltage Regulator Rectifier - RMS020-102821
Piaggio, Gilera, Vespa, Derbi and Aprilia scooters and motorcycles - 1997-2017
Brand new aftermarket voltage regulator rectifier supplied as a direct replacement for the original unit used across the Piaggio group scooter and motorcycle range, covering Piaggio, Gilera, Vespa, Derbi and Aprilia machines over a 1997-2017 coverage span. Installation is plug-and-play and no assembly is required.
The unit measures 83 mm wide by 80 mm long by 28 mm high and mounts through fixation holes on 59 mm centres, with a single plug carrying 5 pins. It is built with higher-grade electrical components that exceed OEM standards, and all products are tested before they are shipped. Because this regulator is shared across a large number of models, the safest way to confirm fitment is to match the OEM number stamped on your existing unit against the cross reference below.
Key Features
- Direct replacement for the original unit
- Plug-and-play installation, no assembly required
- Single 5-pin plug matching the factory connector
- Compact 83 x 80 x 28 mm body on 59 mm hole centres
- Higher-grade electrical components exceeding OEM standards
- Minimum charging voltage of 14.5 V +/- 0.5 V
- Rated to a maximum charging current of 50 A / 500 W
- All products tested before shipment
Technical Specs
| Specification |
Detail |
| Part number |
RMS020-102821 |
| Width |
83 mm |
| Length |
80 mm |
| Height |
28 mm |
| Fixation holes (centre to centre) |
59 mm |
| Number of plugs |
1 |
| Number of pins |
5 |
| Minimum charging voltage |
14.5 V +/- 0.5 V |
| Maximum charging current |
50 A / 500 W |
| Open circuit voltage |
< 15 V |
| Operation temperature |
-20 C to 85 C |
Vehicle Fitment Guide
Years shown are the overall coverage span for this part. Please confirm against the OEM part number on your original unit before ordering.
| Make & Model |
Years |
| Piaggio scooter / motorcycle |
1997-2017 |
| Gilera scooter / motorcycle |
1997-2017 |
| Vespa scooter |
1997-2017 |
| Derbi scooter / motorcycle |
1997-2017 |
| Aprilia scooter / motorcycle |
1997-2017 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 02601600 |
Piaggio group |
| 486062 |
Piaggio group |
| AP8127418 |
Aprilia |
| 82501R |
Piaggio group |
| 58090R5 |
Piaggio group |
| 58090R |
Piaggio group |
Frequently Asked Questions
Does it need any modification to fit?
No. It is a direct fit with plug-and-play installation and no assembly required. It uses the original single 5-pin plug and mounts on 59 mm hole centres, so no cutting, drilling or rewiring is involved.
What is included?
The voltage regulator rectifier unit, tested before shipment.
How do I know my old regulator rectifier has failed?
A flat or repeatedly discharged battery, lights that dim or brighten sharply with engine speed, or a battery that overheats are the usual symptoms. With the engine running, a healthy system should reach at least 14.5 V +/- 0.5 V at the battery terminals. A reading stuck around resting voltage or one rising above 15 V points to the regulator rectifier.
How do I confirm this is the right part for my scooter?
This regulator is shared across many Piaggio group models, so the reliable check is the part number. Remove or inspect your existing unit and compare it with 02601600, 486062, AP8127418, 82501R, 58090R5 or 58090R, and check that it uses a single plug with 5 pins.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
