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125Cc 4-Stroke Semi Auto Engine Motor 3 Speed Go Kart Engine Motor Reverse w/Wiring Harness for ATV Quad Bike Buggy Pit ATV ATC70 90 CDI

Based on 24 reviews
Condition: New
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$309.00
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Availability: In Stock.
Fulfilled by YIPONYT

Arrives Thursday, Nov 5
Order within 16 hours and 40 minutes

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At a glance

Condition
New
Color
125CC 4 Stroke Semi Auto
Model
125Cc 4-Stroke
Voltage
12 volts
Horsepower
5.8 KW
In the box
go kart transmission

Features 4

  • 125cc Engine MotorGo kart engine is a high-performance engine motor,High performance 125cc 4 stroke engine ride faster and can meet the speed you want And it's very comfortable
  • Main Parameter125cc motor auto ENGINE SIZE : 125CC,GEAR SYSTEM : 3 FORWARD; NEUTRAL; REVERSE,Bore x Stroke : 52.4 55.5 mm, 119.7 mL,Maximum torque/ rpm : 8.5 N.m/5000r/min250 r/min,Idle speed : 1500 r/min100r/min,Start Method : Electrical Start
  • Wiring TipsFive wires (Plug): For gear indicator,Yellow wire: For storage battery,Pink (or Yellow) wire: For storage battery,Black & Red wire: For signal trigger,Green wire: For grounding,Blue & White: For trigger coil
  • Scope of Application125CC 4 stroke atv engine is suitable for Go kart, go kart parts, Quad, Dirt bike, Pit bike, Dirt bike, Buggy, Pocket rocket, etc

Description

High performance motor with strong power, suitable for meeting the needs of most people, fast speed and very comfortable Ignition : CDI Maximum net power/ rpm : 5.8 kw/ 7500r/ min±375 r/ min Maximum torque/ rpm : 8.5 N.m/5000r/min±250 r/min Idle speed : 1500 r/min±100r/min for Go kart, go kart parts, Quad, Dirt bike, ATV, Pit bike, Dirt bike, Buggy, Pocket rocket, etc 125CC 4 stroke engine is suitable for Go kart, Quad, Dirt bike, ATV, Pit bike, Dirt bike, Buggy, Pocket rocket, etc Type : Horizontal, single-cylinder, 4-stroke, air-cooled Package includes: It comes with:Wiring+ carby+Airfilter+ Chain case + Gasket (As you see in the picture) 1. Five Wires (Plug): for Gear Indicator 2. Yellow Wire: for Storage Battery 3. Pink (or Yellow) Wire: for Storage Battery 4. Black & Red Wire: for Signal Trigger 5. Green Wire: for Grounding 6. Blue & White: for Trigger Coil About Us At YIPONYT, we believe in the relentless pursuit of quality and innovation. Born from a passion for performance and durability, our brand delivers premium engines, auto parts, home improvement, and household essentials designed to empower your life. Whether you're revving up your vehicle or transforming your living space, YIPONYT combines cutting-edge engineering with unbeatable reliability.

Specs 9

Brand YIPONYT
Voltage 12 volts
Horsepower 5.8 KW
Number of Items 1
Manufacturer YIPONYT
Brand Name YIPONYT
UPC 715092617462
Part Number 125Cc 4-Stroke

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


The wiring is tricky but it runs very well
Color: 125CC 4 Stroke Semi Auto
Shipped very quick and runs well I'm pretty happy with it. Don't forget to hook up the brake safety switch or it won't start. Seller was very responsive thanks.
Reviewed in the United States on February 8, 2026 by Harry

Good Honda swap out
Color: 125CC 4 Stroke Semi Auto
Nice engine had all the bells and whistles
Reviewed in the United States on February 12, 2026 by Treva Grubbs

Always check your package when arrive
Color: 125CC 4 Stroke Semi Auto
I made a mistake on not checking everything when arrived, by the time that I checked and installed I realized that the wire harness wasn’t the right one for the engine, I contacted two electrician on motorcycles and they agreed with me to, I haven’t been able to start the engine because of the harness and besides that there was no instructions at all it was a video on line with out volume. ... show more
Reviewed in the United States on February 22, 2026 by William

125cc engine
Color: 125CC 4 Stroke Semi Auto
Just installed this 125cc engine on my go-kart, and so far, it’s running pretty well. The power is solid—definitely an upgrade from my old motor. The 3-speed gearbox with reverse is super handy, and the electric start works without any hiccups. Wiring was a bit confusing at first, but the color-coded harness helped sort things out. The build feels sturdy, no weird noises or vibrations, and it bolted right into place (double-check your model first, though). Only minor gripe is the instructions could be clearer, but if you’re familiar with small engines, it’s manageable. Seller was responsive when I had a question, which is a plus. For the price, it’s a decent deal if you need a reliable replacement or upgrade. Just make sure you’re comfortable with the install or have a pro handle it. ... show more
Reviewed in the United States on July 14, 2025 by Lori Ann Dinkins

Bad engine
Color: 125CC 4 Stroke Semi Auto
Shipping was fast but this engine doesn't run.
Reviewed in the United States on June 24, 2026 by Donald Robinson

Parts of the product were bad.
Color: 125CC 4 Stroke Semi Auto
Start switch was bad and fuse was blown. Engine turns over
Reviewed in the United States on July 19, 2026 by Crystal gracian

Be warned
Color: 140CC 4 Stroke
Would not recommend buying this engine don't waste your hard earned money on it. Got one sent out came in pretty quick but couldn't not get running had spark and gas and air simple should start nope customers service was nice enough to send a second engine got running same day but always had clutch problems either was engaging all the way or at all even bought a different cable length to help nothing worked. Ending up getting to a point and it was fun till 🙃 the transmission let go of 3rd gear no matter the adjustment or cable u have that clutch will not full engage for a smooth change of gears and no information available to help you fix the problem spend ur money some place else do more research than I did ... show more
Reviewed in the United States on April 3, 2024 by Heads up

I would not buy it.
Color: 125CC 4 Stroke Semi Auto
Fail to make it work
Reviewed in the United States on April 20, 2026 by Jose
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