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Specification:
Material: aluminum and iron
Color: Silver
Engine model: 100CC, single cylinder, air-cooled, two-stroke
Cylinder: split cylinder
Bore & Stroke: 49mm and 40.2mm
Rated power: 3Kw / 5000r / min (4 horsepower / 5000r / min)
Maximum power: 3.8Kw / 6000r / min (5.5-6.5 horsepower / 6000r / min)
Ignition method: CDI
Chain Model: 415
Chain length: 110 links
Compression ratio: 6:01
Transmission ratio: 18: 01
Fuel type: No. 90
Fuel tank capacity: 2L
Speed limit: 50km / hour
Lubricant: Two-stroke gasoline engine oil (or 10W / 40.10W / 30 oil)
Fuel and oil mixing ratio: 16:1 for the new unit, 20:1 after 500km
Spark plug type: Z4C 14MM
Fuel consumption: 3L/100km
Clutch type: friction plate/dry
Cooling method: natural air cooling
Applicable models:
Suitable for most 26" and 28" types of bicycles
Inlet Manifold Inner Diameter of Central Hole: 14.7 mm / 0.58 inches
Inlet Manifold Overall Length: 57.65 mm / 2.27 inches
Inlet Manifold Overall Width: 54.8 mm / 2.16 inches
Inlet Manifold Outer Diameter: 19 mm / 0.75 inches
Exhaust Outlet Inner Diameter: 21 mm / 0.83 inches
Package Included:
1x Silver engine box
1x black fuel tank
1x flameout switch
1x carburetor
1x chain
1x throttle cable
1x clutch cable
1x teeth
1x clutch handle
1x throttle handle
1x chain guard
1x silver exhaust pipe
1xCDI igniter
1x fuel tank cap
1x oil filter
1x spark plug
1x oil switch
1x tubing
2x wallet
3x clip
1x screw top
1x exhaust pipe hoist
1x spark plug tool
1x clutch large spring
1x clutch small spring
1x manual
Some mounting screws
Marilyn watson
Reviewed in the United States on January 3, 2025
I needed help to get going parts were hard on first start up motor went south an was told I will get parts to fix we will see
Tom Reilly
Reviewed in the United States on September 15, 2023
good product
Alec McGowan
Reviewed in the United States on July 3, 2023
For $130 I’m not surprised by the terrible quality but it is not great. There is chunks of metal blocking the exhaust and intake port. Also be aware that it’s not actually a YD/LD100, it’s an AF80. One of the cylinder studs stripped and came right out of the case.
Bigbuck
Reviewed in the United States on July 2, 2023
Engine runs good probably going to go to a smaller main jet #68 it's getting too much gas at full throttle and bogs down with the stock jet which is #70.
Ray Sanchez
Reviewed in the United States on February 5, 2023
The packaging and first appearance was excellent but upon closer inspection and teardown if the motor I found so many things wrong with it!!! The bottom of the cylinder sleeve is cracked and missing a big chunk, the port work is hideous!!! The intake and exhaust surfaces were damaged and cast horribly to the point that there's no way they would seal correctly... Piston was installed backwards and would probably cause motor to seize as well as break the piston rings. The hardware was finger tight throughout entire motor. The clutch bevel gear had no grease nor did the the clutch bucking bar and ball bearing.Also it was listed as an Amazon prime listing and it was shipped snail mail via FedEx and showed up several days later than expectedAlso listed as 100cc it's closer to 70cc by my measurements and calculationsIf this thing even runs even after cleaning up the ports and crappy gasket surfaces and doesn't self destruct I'll be amazed🤞🤞
Zane Torgerson
Reviewed in the United States on April 9, 2023
I think every one should purchase the 100cc 2 stroke motor it is stupid fast and so much fun to ride I threw it on a 26” frame mountain bike and I just be taking it on the trials so much fun!!!
Paul Mryglod
Reviewed in the United States on July 5, 2022
The kit is the higher-end type. I've had four and this is my fifth, first from this seller. All the parts are the better versions, like Allen bolts, 40/40/40, injection molded jug, iron sleeve. The head is cast and has minor defects like a few pin holes. The cylinder liner will need to have the sleeve matched to the bore, as the sleeve ports are slightly smaller than the cylinder ports. This is the best kit I've had yet, but it's important to know about the things I mentioned.
Ryan Gathings
Reviewed in the United States on April 2, 2021
This is an accurate photo of what you will recieve. I will update once I have assembled and installed the motor. 2nd update. The b install took 4 + hours . I would recommend taking the head and cylinder apart to check for debris. It is easy to Do and will save you frustration down the road. The ignition system they sent with my package did not read on my meter so I requested another..waiting to hear back. I will update with their response and once I get to run the motor.
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