12V Regulator rectifier for Honda single and twin cylinder models up through 1978. If your model originally came with a 6V system you'll need to convert to a 12V system to use this regulator rectifier. This part is only for single phase charging systems. It's one of the best upgrades available for the electrical system and it's easy to install! Please review the installation instructions here.
Battery not charging? Might be time to upgrade the charging system. If you're just replacing all the electrical parts on the bike, this is a great upgrade! Especially on models that only came with a rectifier originally.
Isolate the charging issue before ordering parts that way you save yourself time, money, and some hair loss! Before installing a new rectifier, make sure your alternator is putting out the proper amount of AC current and all the connections are clean and making proper contact.
- More efficient, runs cooler and put out more consistent power than the original part(s).
- Rated for up to 180W and will work with most any single phase, permanent magnet alternator.
- Works with all battery types: Lead acid / AGM / lithium
- Lithium battery compatibility: Contact the battery manufacturer to see if it needs more than 14.4DCV. If it does, this product is not compatible.
- Includes terminals: 4 male spade terminals, 1 male plastic locking terminal, 1 ground wire with terminals attached
Width: 68mm (2 3/4")
Length: 58mm (2 1/4")
Height: 24mm (1")
Mount Hole spacing: 56mm (2.2") (measured center to center)
Wire Harness Length: 8"
Fitment note: Can also be used on pre-1970 British twins (replaces rectifier and zener diode), some Kawasaki twins / H2, and Suzuki T / GT two stroke twins.
Fits Honda: (12V Systems Only)
C100 Super Cub - 1959-1962
CA100 Honda 50 - 1962-1970
CA100T Trail 50 - 1961-1962
C102 Super Cub - 1960-1962
CA102 Honda 50 - 1962-1969
C110 Super Sports Cub - 1960-1962
CA110 Sport 50 - 1962-1969
MR50K Elsinore - 1974-1975
QA50K - 1970-1975
Z50A Mini Trail - 1968-1978
C105T Trail 55 - 1962-1963
CA105T Trail 55 - 1963-1965
S65 Sport 65 - 1965-1969
CT70HK Trail 70H - 1970-1973
CT70K Trail 70 - 1969-1978
XL70K - 1974-1976
C70MK Honda 70 - 1970-1971
C70K1 Honda 70 - 1972-1973
CL70K Scrambler 70 - 1969-1973
SL70K Motosport 70 - 1971-1973
XR75K - 1973-1978
XL75 - 1977-1978
CT90K Trail 90 - 1966-1978
CA200 Honda 90 - 1963-1966
CL90 Scrambler 90 - 1967-1969
CM91 Honda 90 - 1966-1969
CT200 Trail 90 - 1964-1966
S90 Super 90 - 1964-1969
SL90 Motosport 90 - 1969
ST90K Trailsport 90 - 1973-1975
XL100K - 1974-1978
CB100K Super Sport 100 - 1970-1972
CL100K Scrambler 100 - 1970-1972
CL100S Scrambler 100 - 1971-1973
SL100K Motosport 100 - 1970-1973
CB125S - 1973-1978
CR125M Elsinore - 1974-1978
CT125 Trail 125 - 1977
CA92 Benly Touring 125 - 1959
CB92 Benly Super Sport 125 - 1959-1962
CB92R Benly S.S. Racer 125 - 1961-1962
CA95 Benly Touring 150 (Early) - 1959-1963
CA95 Benly Touring 150 (Late) - 1963-1966
CL125A Scrambler 125 - 1967-1969
CL125S Scrambler 125 - 1973-1974
MT125K Elsinore - 1974-1978
MT125R - 1977-1978
SL125K Motosport 125 - 1971-1973
TL125K Trials 125 - 1973-1976
XL125K - 1974-1978
CA160 Touring 160 - 1966-1969
CB160 Sport 160 - 1965-1969
CL160 Scrambler 160 - 1966-1967
CL160D Scrambler 160D - 1967-1968
CA175 Touring 175 - 1968-1969
CA175K3 Touring 175 - 1969-1970
CB175K Super Sport 175 - 1969-1973
CL175K Scrambler 175 - 1968-1973
MR175 Elsinore - 1975-1977
SL175K Motosport 175 - 1970-1972
XL175K - 1973-1978
CB200T/K - 1974-1976
CL200 Scrambler 200 - 1974
CA71 Dream Touring 250 - 1959-1960
CE71 Dream Sport 250 - 1959-1960
C72 Dream Touring 250 - 1961
CA72 Dream Touring 250 (Early) - 1960-1963
CA72 Dream Touring 250 (Late) - 1963-1966
CB72 Hawk 250 - 1961-1966
CL72 Scrambler 250 - 1962-1965
CR250M Elsinore - 1973-1978
MR250 Elsinore - 1976
MT250K Elsinore - 1974-1976
TL250 Trials 250 - 1975-1976
XL250K - 1972-1976
C76 Dream Touring 300 - 1959-1960
CA76 Dream Touring 300 - 1959-1960
CS76 Dream Sport 300 - 1960
CSA76 Dream Sport 300 - 1960
C77 Dream Touring 305 - 1961-1964
CA77 Dream Touring 305 (Early) - 1960-1963
CA77 Dream Touring 305 (Late) - 1963-1969
CB77 Super Hawk 305 - 1961-1968
CL77 Scrambler 305 - 1965-1968
CSA77 Dream Sport 305 (CS77) - 1960-1963
CB350G - 1973
CB350K Super Sport 350 - 1968-1973
CL350K Scrambler 350 - 1968-1973
SL350K Motosport 350 - 1969-1973
XL350K - 1974-1978
CB360 (CB360K0) - 1974
CB360G - 1974
CB360T - 1975-1976
CJ360T - 1976-1977
CL360K Scrambler 360 - 1974-1975
CB450K Super Sport 450 - 1965-1974
CL450K Scrambler 450 - 1968-1974
CB500T 500 Twin DOHC - 1975-1976
So far so good!
Posted by Unknown on 26th Apr 2020
Bought this for my cb175 and converted it over to a 12v system. Nice that it came with the connectors and the ground wire already set up. Made replacement easy.
Plug and go
Posted by Lake on 9th Apr 2020
Fit right into my 72 cb350 harness and has performed as expected, also shipped quickly and arrived in decent packaging.
Perfect 6-12v Conversion for CT90
Posted by Steve on 23rd Dec 2019
Wired this guy in, added 12v battery, lights and done!
Upgrade Honda CB450K5
Posted by Dennis Fortuin on 22nd Aug 2019
Very good upgrade for my Honda cb450k.
Easy to install, en works perfect.
It keeps the voltage at 13,4 volts, so that's great.
Good quality for a good price.
'72 CL175 improvement
Posted by Unknown on 18th Aug 2019
Couldn't bring myself to spend $120 on Rick's Rectifier for my bike. Came with everything I needed to get it wired up, still not getting full voltage, but that may due to other components.
Easy install on a CB77
Posted by John on 26th Jul 2019
I was previously running all stock with the old dodgy selenium rectifier and my battery would never stay charged. I was also burning taillight bulbs out at an alarming rate. I bought this unit from 4into1 and found installation to be extremely straightforward. I did not merge the two coils as mentioned in the instructions because I wanted to see how it acted as it was originally designed going through the headlight switch. I soldered the new plug ends onto my existing harness instead of crimping. Anyways after starting her up immediately after the installation, I have a very consistent 13.4 volts at 3000 plus rpm and 13.8 with the lights on. What I like most is the consistency. It just stays at 13.8 volts and doesn't spike and flicker. I may just leave everything as is. If I still have battery issues then I may join the two coils (yellow & pink), but for now I am pleased. I haven't blown a taillight bulb since. I'm assuming that I was getting voltage spikes and it was burning the taillight bulbs. It appears to be a good quality unit at a nice price. There are units out there for $125 but this seems to work good. I just hope it lasts!