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Honda Trail 125 Forum

Welcome to the Honda Trail 125 Forum! We are an enthusiast forum for the Trail 125, Hunter Cub, CT125 or whatever it's called in your country. Feel free to join up and help us build an information resources for this motorcycle. Register a free account today to become a member. Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

Honda Trail 125 CT125 PDF Manual Downloads - Owners, Service, Parts Catalog

dmonkey

dmonkey

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Owner's Manual: A booklet that is included with the purchase of a new Honda Trail 125. The Owner's Manual may be located inside the black toolbox located on the left side of the bike below the rear carrier rack. A hex key for opening the tool box can be found clipped to the top of the fuel tank under the seat.
Service Manual: Manual that covers service, maintenance, and repair of the motorcycle. It is vehicle specific and will refer you to a Honda Common Service Manual for procedures and concepts that are not specific to the Honda Trail.
Parts Catalog: Contains parts diagrams and lists part numbers. Be aware that some part numbers may be superseded, meaning the part has changed since the production of the motorcycle and/or publishing of the parts catalog, and a new part number has replaced it. The parts catalog is also referred to as a parts fiche.

2021-2022 CT125 (JA55)
🇯🇵📰 Japan Press release: Launch of new type 2 moped leisure model "CT125/Hunter Cub"
🇺🇸📰 USA Press release: 2021 Honda Trail 125 ABS Features & Benefits
🔧 Service Manual 2021 Trail 125A P/N: 61K2E00
📖 Owner's Manual 2021 Trail 125 Trail125A P/N: 31K2EA00
📖 Owner's Manual 2022 Trail 125 CT125A P/N: 31K2EA10
⚙️ Parts Catalog 2020 Honda CT125 Hunter Cub (CT125A) P/N: 13K2EB0AJ

Parts diagrams are also available on websites of vendors that sell OEM Honda parts:

2023-2024 CT125 (JA65)
🇺🇸📰USA Press release: 2023 Honda Trail125 Features & Benefits
"Efficient, quiet, fuel-efficient and durable, the engine combines the bottom end (with redesigned crankcases) from the Japanese-market C110 with the SOHC, two-valve top end of the Grom."
The 2023 model (JA65) has some changes from the prior model including a new longer stroke and higher compression Euro 5 compliant engine with replaceable oil filter, different top mount on the engine, different generator/stator but same 190 watt output, a helical primary gear for reduced noise, adjustable rear suspension with 5 settings, updated meter stay, one-piece engine "crash" bars with a cross brace in front, a 38T rear sprocket, different exhaust pipe, 0.4-inch more front fork travel, different kick start lever, different gear shift foot lever, larger side stand foot, different side stand kill switch and wiring, reinforced center stand, different swingarm for a longer wheelbase, different DLC diagnostic port connector plug next to the battery, revised body panel plastics, the rear carrier rack is painted black and has additional attachment points for accessories in some regions (not the USA), and the "HONDA" logo on both sides of the spine of the bike has an added drop shadow or black background.
🇺🇸📰 Press release: 2024 Honda Trail125 Features & Benefits
📖 Owner's Manual 2023 Trail125 P/N: 31K2EA20
📖 Owner's Manual 2024 Trail125 P/N: 31K2EA30

Parts diagrams are also available on websites of vendors that sell OEM Honda parts:

Common Service Manual
Honda Common Service Manual (2017) P/N: 61CSM00

Additional manuals and parts catalogs can be found on Honda's Motopub portal.
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If any of these links no longer work please send me a direct message and I will try to maintain them.
 
Last edited:
STUBBORN

STUBBORN

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I always get confused with the exploded diagrams.

Would it be possible to get the General Manual that
the Service Manual refers to?
 
dmonkey

dmonkey

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Updated with the 2023 Owner's manual which covers Canada and USA ;)
It is listed on Honda Motopub for New Zealand. https://www.hondamotopub.com/model/BWH/K2E234/

The 2023 Owner's Manual notes a few differences such as:
  • Volume for the 1st (E) segment of the fuel gauge flashing, it now flashes at approximately 0.29 US gal (1.1 L) while the 2021-2022 model was 0.26 US gal (1.0 L). Total fuel capacity remains unchanged.
  • Canada model has a 4-step rotary system where the gear can be changed from 4th to neutral directly when stopping (stopped?)
  • Emissions information adds reference to the Environment and Climate Change Canada (ECCC)
  • Maintenance Schedule
    • Engine Oil Filter was added while retaining the Engine Oil Strainer Screen and Engine Oil Centrifugal Filter
    • Drive Chain Slider is removed
    • Evaporative Emissions Control System is noted as being for USA
    • Spark Arrestor is noted as being USA only
  • A collar has been added beneath the screw to the Battery Lid
  • Adjusting the Rear Suspension section is added
  • Canada model has more spare fuses than USA model
  • Canada model has another Vehicle Emissions Control Information label on the right side of the swingarm
  • Canada information added for reporting safety defects
  • Ground clearance increased to 6.7 in (170 mm) from 6.5 in (165 nm)
  • Curb weight reduced to 256 lb (116 kg) from 258 lb (117 kg)
  • Engine compression ratio changed to 10.0:1 from 9.3:1
  • Bore x stroke changed to 1.97 x 2.48 in (50.0 x 63.1 mm) from 2.06 x 2.28 in (52.4 x 57.9 mm)
  • Overall length changed to 77.4 in (1,965 mm) from 77.2 in (1,960 mm)
  • Wheelbase changed to 49.6 in (1,260 mm) from 49.4 in (1,255 mm)
  • Standard spark plug changed to CPR7EA-9S (NGK)
  • Engine oil capacity numbers changed and account for oil filter
  • Rear sprocket is 38T, from 39T, resulting in a different primary / final drive ratio
 
Last edited:
B

backfill

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"Rear sprocket is 38T, from 39T, resulting in a different primary / final drive ratio"

If the front sprocket remains the same, does this mean that the 2023 will have a slightly higher top end?
 
dmonkey

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Folks in Japan have reported that the 2023 model (JA65) with the updated engine and gearing is slightly faster than the previous model (JA55). I think it will depend on what tune the bike gets for the North American market.
 
dmonkey

dmonkey

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The updated Super Cub also shed ~2 lb while keeping the 4-speed, so that sounds like a good guess that it's from having a lighter engine.
 
KiwiGravelRoadieRick

KiwiGravelRoadieRick

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dmonkey said:
What year and model CT did you buy that it came in yellow, is it an older model or customized?
Click to expand...
In New Zealand we are spoilt for colour choice. You can have red, yellow, green and I think a charcoal grey. I got the last yellow one in the country. The wholesaler still has some 20 red ones left, obviously they are expecting most people want a red one. So mine is the 2023 JA65 with the higher compression. I've only ridden it three time so far commuting to work and it's so much fun to ride. I could do with a gear indicator as because the gear lever action is reversed to a normal bike I do occasionally shift the wrong way. :rolleyes:
 
dmonkey

dmonkey

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That's a great color! Congrats on the new bike.
Those appear to be Japanese market bikes based on the fender decals. I wonder if your NZ dealer is getting them from Abe Honda in Japan? They sell new CTs with custom paint jobs including that yellow color. AFAIK there are no official yellow body parts for the CT125 (yet). The OEM colors are Pearl Organic Green (GY-157P), Matte Armored Silver Metallic (NH-B89M), and Glowing Red (R-354).
 
KiwiGravelRoadieRick

KiwiGravelRoadieRick

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dmonkey said:
That's a great color! Congrats on the new bike.
Those appear to be Japanese market bikes based on the fender decals. I wonder if your NZ dealer is getting them from Abe Honda in Japan? They sell new CTs with custom paint jobs including that yellow color. AFAIK there are no official yellow body parts for the CT125 (yet). The OEM colors are Pearl Organic Green (GY-157P), Matte Armored Silver Metallic (NH-B89M), and Glowing Red (R-354).
Click to expand...
The dealers get them from Blue Wing Honda who are the official importers. It did come with lots of documents in Thai so it’s probably from Thailand Honda factory.
 
dmonkey

dmonkey

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Interesting. To clarify, all of the CT125s are manufactured in Thailand. They're just built to different specs depending on their destination market. The white stripe on the front fender, and a corresponding white triangle on the rear fender if it has that, are required for Moped Class 2 (50-125cc) vehicles in Japan which would suggest that's the market the bike was built for. Another possible Japan specific decal would be a "Motorcycle Recycling" sticker under the seat on the same panel as the hex/allen key above the fuel tank.
 
vintagegarage

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It's also interesting to note that the New Zealand market gets the rear pegs and heat protector for the rear rider standard, just as the Australia market got back in the day with the Gen 1 CT125. It is also a testament to the voters in New Zealand who don't let their government run amuck, unlike the Australians who voted in a government that banned the 2023 CT125 because it doesn't have rear ABS.
 
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