US-28703800, GU28703800, GU287038 287, REF4372
Modern MOSFET Voltage Regulator / Rectifier - CARR451 - Rotor-1
Also suitable for Lithium-Ion - LiFePO4 LFP batteries
3 Year warranty
Plug&Play

Among others suitable for:
BMW R45 Voltage regulator rectifier 1978 1979 1980
BMW R45N Voltage regulator rectifier 1978 1979 1980 1981 1982 1983 1984 1985
BMW R45T Voltage regulator rectifier 1981 1982 1983 1984 1985
BMW R45TN Voltage regulator rectifier 1981 1982 1983 1984 1985
BMW R50/2 Voltage regulator rectifier 1967 1968 1969
BMW R50/5 Voltage regulator rectifier 1969 1970 1971 1972 1973 1974
BMW R69S Voltage regulator rectifier 1961 1962 1963 1964 1965 1966
BMW R60/5 Voltage regulator rectifier 1969 1970 1971 1972 1973 1974
BMW R60/6 Voltage regulator rectifier 1973 1974 1975 1976 1977
BMW R60/7 Voltage regulator rectifier 1976 1977 1978 1979 1980 1981
BMW R60 TIC Voltage regulator rectifier 1978 1979 1980 1981
BMW R65 1978 Voltage regulator rectifier 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988
BMW R65/20 Voltage regulator rectifier 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994
BMW R65/35 Voltage regulator rectifier 1985 1986 1987 1988 1989
BMW R65GS Voltage regulator rectifier 1988 1989 1990 1991 1992 1993
BMW R65LS Voltage regulator rectifier 1981 1982 1983 1984 1985
BMW R65T Voltage regulator rectifier 1981 1982 1983 1984 1985
BMW R75/5 Voltage regulator rectifier 1969 1970 1971 1972 1973 1974
BMW R75/6 Voltage regulator rectifier 1973 1974 1975 1976 1977
BMW R75/7 Voltage regulator rectifier 1976 1977 1978 1979
BMW R80 Voltage regulator rectifier 1977-1995
BMW R80/7 Voltage regulator rectifier 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984
BMW R80G Voltage regulator rectifier 1980 1981 1982 1983 1984 1985 1986 1987
BMW R80S Voltage regulator rectifier 1980 1981 1982 1983 1984 1985 1986 1987
BMW R80GS Voltage regulator rectifier 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996
BMW R80R Voltage regulator rectifier 1991 1992 1993 1994 1995
BMW R80RT Voltage regulator rectifier 1982-1996
BMW R80ST Voltage regulator rectifier 1982 1983 1984 1985
BMW R80TIC Voltage regulator rectifier 1978 1979 1980 1981 1982 1983 1984 1985
BMW R90/6 Voltage regulator rectifier 1973 1974 1975 1976
BMW R90S Voltage regulator rectifier 1973 1974 1975 1976 1977
BMW R100 Voltage regulator rectifier 1976 1977
BMW R100T Voltage regulator rectifier 1978 1979 1980 1981 1982 1983 1984 1985
BMW R100/7 Voltage regulator rectifier 1976 1977 1978
BMW R100/7T Voltage regulator rectifier 1977 1978 1979 1980 1981 1982 1983 1984 1985
BMW R100CS Voltage regulator rectifier 1980 1981 1982 1983 1984 1985
BMW R100GS Voltage regulator rectifier 1987 1988 1989 1990 1991 1992 1993 1994 1995
BMW R100PD Voltage regulator rectifier 1989 1990 1991 1992 1993 1994 1995 1996
BMW R100GSPD Voltage regulator rectifier 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996
BMW R100R Classic Voltage regulator rectifier 1991 1992 1993 1994 1995 1996
BMW R100R Mystic Voltage regulator rectifier 1994 1995 1996
BMW R100RS Voltage regulator rectifier 1976-1993
BMW R100RT Voltage regulator rectifier 1978-1996
BMW R100S Voltage regulator rectifier 1976 1977 1978 1979 1980 1981
BMW R100TIC Voltage regulator rectifier 1981 1982 1983 1984 1985
Moto Guzzi 350 Nevada Voltage regulator rectifier 1992 1993 1994 1995 1996 1997
Moto Guzzi 350 Nevada Club Voltage regulator rectifier 1998 1999
Moto Guzzi 350 V35 Voltage regulator rectifier 1977 1978 1979
Moto Guzzi 350 V35 II Voltage regulator rectifier 1980 1981 1982 1983 1984 1985
Moto Guzzi 350 V35 III Voltage regulator rectifier 1986
Moto Guzzi 350 V35 Custom Voltage regulator rectifier 1982 1983 1984 1985
Moto Guzzi 350 V35 Falco Voltage regulator rectifier 1988
Moto Guzzi 350 V35 Florida Voltage regulator rectifier 1986-1992
Moto Guzzi 350 V35 GT Voltage regulator rectifier 1987 1988 1989 1990
Moto Guzzi 350 V35 Imola Voltage regulator rectifier 1979 1980 1981 1982 1983
Moto Guzzi 350 V35 Imola II Voltage regulator rectifier 1984 1985 1986 1987
Moto Guzzi 350 V35 SP Voltage regulator rectifier 1982 1983 1984 1985
Moto Guzzi 350 V35 TT Voltage regulator rectifier 1984 1985 1986
Moto Guzzi 500 V50 Voltage regulator rectifier 1977 1978
Moto Guzzi 500 V50 II Voltage regulator rectifier 1979 1980
Moto Guzzi 500 V50 III Voltage regulator rectifier 1980-1986
Moto Guzzi 500 V50 Custom Voltage regulator rectifier 1982 1983 1984 1985
Moto Guzzi 500 V50 Monza Voltage regulator rectifier 1980 1981 1982 1983
Moto Guzzi 500 V50 Monza II Voltage regulator rectifier 1984 1985 1986 1987
Moto Guzzi 500 V50 Sport Voltage regulator rectifier 1979
Moto Guzzi 500 V50 TS Voltage regulator rectifier 1981
Moto Guzzi 650 V65 Voltage regulator rectifier 1982-1987
Moto Guzzi 650 V65 Custom Voltage regulator rectifier 1984 1985 1986 1987
Moto Guzzi 650 V65 Florida Voltage regulator rectifier 1986-1994
Moto Guzzi 650 V65 GT Voltage regulator rectifier 1987-1993
Moto Guzzi 650 V65 Lario Voltage regulator rectifier 1984-1987
Moto Guzzi 650 V65 SP Voltage regulator rectifier 1983-1986
Moto Guzzi 650 V65 TT Voltage regulator rectifier 1984 1985 1986
Moto Guzzi 850 Le Mans Voltage regulator rectifier 1976 1977 1978
Moto Guzzi 850 T Voltage regulator rectifier 1973 1974
Moto Guzzi 850 T3 Voltage regulator rectifier 1975 1976 1977 1978 1979
Moto Guzzi 1000 California II Voltage regulator rectifier 1982-1986
Moto Guzzi 1000 California III Voltage regulator rectifier 1987-1994
Moto Guzzi 1000 Le Mans IV Voltage regulator rectifier 1985 1986 1987
Moto Guzzi 1000 SP III Voltage regulator rectifier 1989 1990 1991 1992 1993

OEM numbers:
US-28703800 GU28703800 GU287038 287
REF4372



We manufacture a wide range of regulator rectifiers to fit new and older motorcycles.
New advanced design - most of our regulator rectifiers now feature highly advanced metal ceramic heat transfer and are built using the latest equipment, making them extremely rugged and reliable.

In all cases, the BLACK and RED ring tag wires should go straight to the battery studs. These are the heavy current battery charging wires.



Description (PDF)
Description BMW R60 R75 R90 R90S (PDF)

Resistance between rotor slip rings 3,0 - 3,8 Ohm
Phase resistance: 0,62 Ohm


Team-Carmo

Digital ignition systems.

Our digital ignition systems come with 3 years warranty. Production errors, quality issues and internal problems are covered by this warranty.
The Carmo digital ignition systems are protected against high voltage peaks, defective HT coils and reverse battery connection.
This protection means that the Carmo digital ignition will not be damaged immediately in case of faulty electronics in your motorcycle.
Long term use of a motorcycle with faulty electronics may still result in damage to the Carmo digital ignition system.
This means that without solving the electrical issue the Carmo digital ignition could break down after a while.

If research shows that your Carmo digital ignition was damaged by faulty electrical parts, the warranty rights will not be valid.
If this situation occurs we will attempt to repair your ignition system in order to keep the costs as low as possible.
If the system is beyond repair a new product will be offered at a reduced price.
In all cases we will try our best to offer an acceptable solution.

Testing your original ignition module is free of charge when purchasing one of our replacement systems.
During the test we are often able to find out what caused your original module to break down.
This way you will know for sure if your original module really needs replacement, and you’ll be able to solve other electrical issues that may not be known yet.

Team Carmo.