Honda made in Japan by Honda Honda engines
Welcome to Honda (moped parts). There is plenty of info here but not a lot of actual parts for sale. Honda mopeds and the parts for them were only sold through Honda motorcycle dealerships. So the small shops that sold parts for European mopeds never did have Honda parts in their inventories. For this reason, other than some aftermarket things like brake shoes, spokes, tires, tubes, batteries, bulbs, petcocks, etc, Myrons pretty much only has original Honda parts from a few stripped out used bikes.
American Honda Models 50-110cc 1959-1984
These are condensed from the Honda Identification Guide 1959-2000. Over 110cc models are excluded. Pure off road and 3 or 4-wheeled models are also excluded.
The pedal-assist models that U.S. Honda dealers sold were the P50, PC50, and PA50. The two-stroke Honda PA50 moped is made in Belgium, and is covered in the Honda Benelux section. The 4-stroke P50 and PC50 mopeds were only sold one or two years each, and are not as common in the US as they were in Canada and Europe. The US motorcycle laws were not favorable to pedal-assist mopeds (motorized bicycles) until 1976.
Honda made many step-thru models that were like mopeds. They had foot shift 3-speed 4-stroke engines, but no manual clutch. So they were easy and well mannered compared with the roaring two strokes and bigger bikes. Honda revolutionized transportation worldwide with the C70 step-thru motorcycle, and set a Guiness World Record for the most motorcycles ever made of the same model. Ordinary poor people could go places cheaply reliably and safely on a Honda.

Honda 1968-71
PC50 Little Honda
Z50A Mini Trail 50
CL70 Scrambler 70
CT70 Trail 70 xxxx
CT90 Trail 90 xxxx

Honda 1969-71
C70M Honda 70 xxxx
Z50AK1 Mini Trail 50
CL70K1 Scrambler 70
CT70H Trail 70H xxx
CT90K2 Trail 90 xxxx

Honda 1970-72
C70M Honda 70 xxxx
Z50AK2 Mini Trail 50
CL70K2 Scrambler 70
SL70 Motosport 70 xx
CT90K3 Trail 90 xxxx

Honda 1972-73
C70K1 Honda 70 xxx
Z50AK3 Mini Trail 50
CL70K3 Scrambler 70
CT70K1 Trail 70 xxxx
CT70HK1 Trail 70H x
CT90K4 Trail 90 xxx

Honda 1972-73
C70K1 Honda 70 xxx
Z50AK4 Trail 50 xxxx
SL70K1 Motosport 70
CT70K2 Trail 70 xxxx
CT90K4 Trail 90 xxxx

Honda 1977
NC50’77 Express xxx
Z50A’77 Mini Trail 50
XL75’77 xxxxxxxxxxx
CT70’77 Trail 70 xxxx
CT90’77 Trail 90 xxxx

Honda 1978
PA50I’78 Moped 20mph
PA50II’78 Moped 30mph
NC50’78 Express xxxxxx
Z50A’78 Mini Trail 50 xx
CT70’78 Trail 70 xxxxxx
CT90’78 Trail 90 xxxxxx

Honda 1979-80
PA50I’79 Moped 20mph
PA50II’79 Moped 30mph
NC50’79 Express xxxxxx
NC50’80 Express xxxxxx
Z50R’79 xxxxxxxxxxxxxx
NA50’79 Express II xxxx
CT90’79 Trail 90 xxxxxx

Honda 1980-81
PA50II’80 Moped 30mph
C70’80 Passport xxxxxxx
XL80S’80 xxxxxxxxxxxxx
XL80S’81 xxxxxxxxxxxxx
NA50’80 Express II xxxx
CT110’80 Trail 110 xxxxx
CT110’81 Trail 110 xxxxx

Honda 1981-82
PA50II’81 Moped 30mph
C70’81 Passport xxxxxxx
NC50’81 Express xxxxxx
NC50’82 Express xxxxxx
NA50’81 Express II xxxx
NX50M’81 Express SR x
NX50M-82 Express SR x

Honda 1982-83
PA50II’82 Moped 30mph
PA50II’83 Moped 30mph
C70’82 Passport xxxxxxx
C70’83 Passport xxxxxxx
NU50’82 Urban Express
NU50’83 Urban Express
NU50M’82 U.Ex. Deluxe
NU50M’83 U.Ex. Deluxe
MB5’82 xxxxxxxxxxxxxx

Honda 1982-84
NC50’83 Express xxx
NB50M’83 Aero 50 xx
NH80MD’83 Aero 80
XL80S’82 xxxxxxxxxx
XL80S’83 xxxxxxxxxx
CT110’82 Trail 110 xx
CT110’83 Trail 110 xx
CT110’84 Trail 110 xx
In the next few years after 1984, for street bikes below 120cc, Honda only made scooters. Scooters have a rear engine, and many things different from mopeds. The only parts for 49cc scooters that Myrons might have are brake shoes, spark plugs, batteries, mirrors, and other things, but not much else.
In 1985 Honda came out with the Elite line of four stroke scooters, with continuously variable automatic transmissions. Once again forward-looking Honda revolutionized transportation. Before the Honda Elite there was no such thing as a 4-stroke scooter. Five years later, in 1990 Japanese scooters (Honda and Yamaha) were fairly common in US cities. Twenty five years later, in 2010, Chinese four-stroke scooters were as common as motorcycles on American city streets.
Honda Express
Before the scooter craze of the late 1980’s, and during the end of the moped craze of the late 1970’s, Honda offered an ultralight kickstart moped, without pedals but still speed limited to 30mph. Thousands of NC50 Express and NA50 Express II mopeds were sold in the US, especially in states that did not require drivers licenses. Honda ran magazine ads showing how silly and ridiculous the obsolete pedal-assist mopeds were, and how a Honda Express would zip by them on the uphills.

1977 Honda NC50 Express
wind-up starting, no turn signals, 6V 2Ah battery
points ignition, manual choke, oil injection,
chain drive, one speed automatic transmission

1978 Honda NC50 Express
wind-up starting, no turn signals, 6V 2Ah battery
points ignition, manual choke, oil injection
chain drive, one speed automatic transmission

1979 NC50 and 1979 NA50
wind-up starting, no turn signals
6V 2Ah battery, points ignition,
manual choke. oil injection, chain
one speed automatic transmission

1980 Honda NA50 Express II
wind-up starting, turn signals
6V 4Ah bigger battery, points ignition,
manual choke, oil injection, chain drive
one speed automatic transmission

1980 Honda NC50 Express
wind-up starting (kick lever is horizontal)
turn signals, 6V 4Ah battery, points ignition,
manual choke, oil injection, chain drive
one speed automatic transmission

1981 Honda NC50 Express
direct kick starting (kick lever is vertical)
turn signals, 6V 4Ah battery, CDI ignition,
automatic choke, oil injection, chain drive
one speed automatic transmission

1981 Honda NA50 Express II
wind-up starting, turn signals
6V 4Ah bigger battery, points ignition,
manual choke, oil injection, chain drive
two speed automatic transmission
One Speed Models:
1977-81 NC50 Express
1979-80 NA50 Express II
1982-83 NU50 Urban Express
Two Speed Models:
1981 NA50 Express II
1982-83 NC50 Express
You can tell a two-speed by the bulge on the transmission cover.

1981 Honda NX50 Express SR
12 volt, electric start and kick start,
belt drive, Honda V-Matic CVT transmission

1982 Honda NX50 Express SR
12 volt, electric start and kick start,
belt drive, Honda V-Matic CVT transmission

1982 Honda NC50 Express
direct kick (kick lever is vertical)
low 6V headlight with rack, new frame
signals, CDI, auto choke, oil injection
chain, two speed automatic trans.

1983 Honda NC50 Express
direct kick starting (kick lever is vertical)
low 6V headlight with rack, new frame
turn signals, CDI, auto choke, oil injection
chain drive, two speed automatic transmission

1982 NU50 Urban Express
kick start only, CDI, auto choke,
12 volt, belt drive, oil injection
one speed automatic trans.

1982 NU50M Urban Express Deluxe
kick and electric start (has bigger battery),
CDI, auto choke, 12 volt, belt drive, oil injection
one speed automatic transmission

Rear rack, OK chrome, without bolts $30, Tail light assembly with turn signal mount N/A, Turn signals, good used $20 each
Honda Express Parts:
Gas tank: The gas tank and oil injection tank are one unit. Often the wall between them leaks, allowing gas to get into the oil and oil to get into the gas. The simplest fix is to drain the oil tank and block off the supply line. Then use pre-mix 50:1 gas and oil.
Gas valve: M14-1.0 spigot down, see Gas Valves
Gas cap: 30mm quarter-turn, see Gas Caps
Carburetor: Keihin 11.5 mm, see Keihin where there are many photos, illustrations, and much information, as well as Honda Express carburetor parts for sale.
Main switch: Substitute main switch, fits and functions the same, but has 4-wire plug, price $20 with two keys
Spark plug: NGK BP5HS or equivalent, see Spark Plugs
Tires: 2.25-14 front and rear (NC50, NA50), see Tires
Honda PC50
Honda PC50 Parts:
Tires: front 2-ply 2.00 – 19, rear 4-ply 2.25 – 19
Some of the parts on an early 1970’s PC50 are found on late 1970’s Taiwan mopeds that “copied” Honda. Myrons Mopeds has these PC50 items:
Engine parts 90% the same as Indian. See Parts/By Brand/Indian
Hubs & 80mm brakes 80% the same as Angel
Cantilever Fork & suction cup solo seat 80% the same as Angel
Levers/switches 80% the same as Indian/Angel/General, maybe
Cables and other things might also be the same.
Tail light looks like Angel tail light
Head light and body panels/parts for PC50 are NOT the same.
Other Small Hondas