---
product_id: 495186665
title: "125CC Engine Motor 4-Stroke Horizontal Engine, ATV Quad Engine Motor Complete Kit Semi-auto Single Cylinder Air-Cooling Motor w/Reverse Electric Starter for ATV Go Kart"
brand: "dnysysj"
price: "3451 zł"
currency: PLN
in_stock: true
reviews_count: 8
url: https://www.desertcart.pl/products/495186665-125cc-engine-motor-4-stroke-horizontal-engine-atv-quad-engine
store_origin: PL
region: Poland
---

# 3-speed gear system + reverse 125CC high-performance engine Air-cooled 4-stroke design 125CC Engine Motor 4-Stroke Horizontal Engine, ATV Quad Engine Motor Complete Kit Semi-auto Single Cylinder Air-Cooling Motor w/Reverse Electric Starter for ATV Go Kart

**Brand:** dnysysj
**Price:** 3451 zł
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your ride with power, precision, and style — don’t get left in the dust!

## Quick Answers

- **What is this?** 125CC Engine Motor 4-Stroke Horizontal Engine, ATV Quad Engine Motor Complete Kit Semi-auto Single Cylinder Air-Cooling Motor w/Reverse Electric Starter for ATV Go Kart by dnysysj
- **How much does it cost?** 3451 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/495186665-125cc-engine-motor-4-stroke-horizontal-engine-atv-quad-engine)

## Best For

- dnysysj enthusiasts

## Why This Product

- Trusted dnysysj brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power-packed 125CC Engine:** Unleash 5.8kW of smooth, reliable power for your ATV or go-kart adventures.
- • **Efficient Air-Cooled 4-Stroke:** Stay cool under pressure with a durable, low-maintenance engine design.
- • **Plug & Play Wiring Kit Included:** Simplify installation with a complete wiring harness, carburetor, air filter, and chain case.
- • **Kickstart & Electric Start Combo:** Never get stuck—choose your start method for convenience and reliability.
- • **Versatile 3-Speed Gearbox with Reverse:** Effortlessly switch between 3 forward speeds and reverse for ultimate control.

## Overview

This 125CC horizontal single-cylinder 4-stroke engine delivers 5.8kW at 7500rpm with a 3-speed gear system including reverse. Featuring air cooling, CDI ignition, and dual start methods (electric and kick), it’s designed for ATVs, go-karts, and dirt bikes. The kit includes essential components like wiring, carburetor, air filter, and chain case, making it a high-performance, ready-to-install upgrade for thrill-seekers and weekend warriors alike.

## Description

Note: Installation Manual Is Not Included Professional Installation Is Highly Recommended Specifications: Engine size: 125CC Gear system: 3 Forward, Neutral, Reverse Type: Horizontal, Single Cylinder 4-Stroke Air-Cooled Start Method: Electrical Start Bore x Stroke: 2'' x 2.2'', 0.3 gal / 4 fl oz Top Engine Mount: 3.6'' Bottom Engine Mount: 3.2'' Bolt to Bolt: 6" Compression ratio: 9:1 Maximum net power / rpm : 5.8kw / 7500rpm±375rpm Maximum torque / rpm: 8.5N.m / 5000rpm±250rpm Idle speed: 1500RPM±100RPM Front sprocket: 420 - 17mm - 14T Ignition: CDI Air Filter: 1.4'' Carburetor: PZ19 Starter: Kick starter Lubrication: Pressure/Splash Oil capacity: 900ml/0.24gal/30fl oz Package size: 18'' x 14'' x 12'' Shipping weight: 48 lb Wiring: Five 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 Package includes: It comes with: Wiring + Carby + Airfilter + Chain Case + Gasket. As you see in the picture

Review: Great price - I bought this as a replacement engine for a small go kart. It was easy to install and runs great. You'll have to buy a carb, air filter, and gas tank if you don't already have one
Review: Runs amazing. Starts first kick every kick. - Bought as an upgrade for my125 xpro hawk. Brought it to 140. Super impressed! Roughly 60% more torque than the 125! Made my pit bike waaayy more fun. The seller was prompt at sending a wiring diagram to get me up and running. Highly recommended! Cannot go wrong for the money.

## Features

- 【125CC Engine Fitment】125CC Engine Size. Go kart, Quad, Dirt bike, ATV, Pit bike, Dirt bike, Buggy, Pocket rocket.
- 【High Performance】Engine size: 125CC; Gear siystem: 3 Forward, Neutral, Reverse; Type: Horizontal, Single Cylinder 4-Stroke Air-Cooled; Start Method: Electrical Start; Ignition: CDI; Air Filter: 1.4'' Carburetor: PZ19; Starter: Kick starter; Maximum net power/rpm : 5.8kw/7500rpm±375rpm; Maximum torque/rpm: 8.5N.m/5000rpm±250rpm; Idle speed: 1500RPM±100RPM.
- 【Main Parameters】Bore x Stroke: 2'' x 2.2'', 4fl oz; Top Engine Mount: 3.6''; Bottom Engine Mount: 3.2''; Bolt to Bolt: 6"; Compression ratio: 9:1; Front sprocket: 420-17mm-14T; Lubrication: Pressure/Splash; Oil capacity: 30fl oz; Package size: 18'' x 14'' x 12''; Shipping weight: 48lb.
- 【Wiring Tips】Five 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
- 【Quality Service】During the purchase process or after receiving the product, If you have any questions during use, please contact us directly! We will provide the most satisfactory solution in time! The Gkonfollon team will provide you with services within 24 hours.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09W9MPQ26 |
| Best Sellers Rank | #1,165,041 in Automotive ( See Top 100 in Automotive ) #569 in Powersports Engine Kits |
| Brand | DNYSYSJ |
| Brand Name | DNYSYSJ |
| Customer Reviews | 3.7 out of 5 stars 59 Reviews |
| Horsepower | 5.8 Kilowatts |
| Manufacturer | DNYSYSJ |

## Product Details

- **Brand:** DNYSYSJ
- **Horsepower:** 5.8 Kilowatts
- **Manufacturer:** DNYSYSJ

## Images

![125CC Engine Motor 4-Stroke Horizontal Engine, ATV Quad Engine Motor Complete Kit Semi-auto Single Cylinder Air-Cooling Motor w/Reverse Electric Starter for ATV Go Kart - Image 1](https://m.media-amazon.com/images/I/61OQxDHgaFL.jpg)
![125CC Engine Motor 4-Stroke Horizontal Engine, ATV Quad Engine Motor Complete Kit Semi-auto Single Cylinder Air-Cooling Motor w/Reverse Electric Starter for ATV Go Kart - Image 2](https://m.media-amazon.com/images/I/61z3SzG+TFL.jpg)
![125CC Engine Motor 4-Stroke Horizontal Engine, ATV Quad Engine Motor Complete Kit Semi-auto Single Cylinder Air-Cooling Motor w/Reverse Electric Starter for ATV Go Kart - Image 3](https://m.media-amazon.com/images/I/713SqEnPjFL.jpg)
![125CC Engine Motor 4-Stroke Horizontal Engine, ATV Quad Engine Motor Complete Kit Semi-auto Single Cylinder Air-Cooling Motor w/Reverse Electric Starter for ATV Go Kart - Image 4](https://m.media-amazon.com/images/I/71HUS0ldqqL.jpg)
![125CC Engine Motor 4-Stroke Horizontal Engine, ATV Quad Engine Motor Complete Kit Semi-auto Single Cylinder Air-Cooling Motor w/Reverse Electric Starter for ATV Go Kart - Image 5](https://m.media-amazon.com/images/I/71JTNUsgicL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Can this be used on a shaft driven quad?**
A: Yes, It can

**Q: What pitch and tooth count is the sprocket?**
A: Sprocket Model: 428-14T

**Q: Can you send me the wiring diagram for the 125**
A: Thank you for your question!
Please contact me by email
Thank you.

**Q: this come with the exhaust?**
A: Hi, no exhaust pipe

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great price
*by J***N on February 9, 2025*

I bought this as a replacement engine for a small go kart. It was easy to install and runs great. You'll have to buy a carb, air filter, and gas tank if you don't already have one

### ⭐⭐⭐⭐⭐ Runs amazing. Starts first kick every kick.
*by C***Y on April 14, 2024*

Bought as an upgrade for my125 xpro hawk. Brought it to 140. Super impressed! Roughly 60% more torque than the 125! Made my pit bike waaayy more fun. The seller was prompt at sending a wiring diagram to get me up and running. Highly recommended! Cannot go wrong for the money.

### ⭐ Works but not as described. Do not recommend
*by J***N on April 29, 2024*

Shipping was fast but damage did happen. Some oil leaked out,a wire was cut and the chain cover was crushed and cracked. The chain cover doesnt even fit. Had to be modified to fit. Motor is not the same as what I wanted or have. The shift pattern is even different. Its 5 down instead of 1 down 4 up. The pic was the same but what I received is different. Even the jug bolts a smaller so im not even sure this is a 200. Only thing I can say is make sure your getting the right product.

## Frequently Bought Together

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-14*