---
product_id: 561824805
title: "4 Stroke Racing Engine, 140cc Engine Horizontal Motor with Gear Shift Lever Single-Cylinder Motor for Honda CRF50 Pit Dirt Bike 4 Speed Manual Clutch Carburetor"
brand: "liyuanjun"
price: "AED 999"
currency: AED
in_stock: true
reviews_count: 6
category: "Liyuanjun"
url: https://www.desertcart.ae/products/561824805-4-stroke-racing-engine-140cc-engine-horizontal-motor-with-gear
store_origin: AE
region: United Arab Emirates
---

# 8kW max power at 7500 RPM 4-speed manual clutch gear system 140cc high-performance displacement 4 Stroke Racing Engine, 140cc Engine Horizontal Motor with Gear Shift Lever Single-Cylinder Motor for Honda CRF50 Pit Dirt Bike 4 Speed Manual Clutch Carburetor

**Brand:** liyuanjun
**Price:** AED 999
**Availability:** ✅ In Stock

## Summary

> ⚡ Unleash the beast: Power, precision, and control in one compact racing engine!

## Quick Answers

- **What is this?** 4 Stroke Racing Engine, 140cc Engine Horizontal Motor with Gear Shift Lever Single-Cylinder Motor for Honda CRF50 Pit Dirt Bike 4 Speed Manual Clutch Carburetor by liyuanjun
- **How much does it cost?** AED 999 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/561824805-4-stroke-racing-engine-140cc-engine-horizontal-motor-with-gear)

## Best For

- liyuanjun enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Engineered with a 9.0:1 compression ratio and premium 15W/40-SE oil compatibility for durability and consistent torque delivery.
- • **Total Control:** 4-speed manual clutch with 1N234 gear pattern ensures smooth, responsive shifting for that pro-level ride.
- • **Complete Upgrade Kit:** Includes engine, carburetor, kick starter & gear shift levers—everything you need to transform your Honda CRF50 or compatible mini trail bike.
- • **Kickstart Confidence:** Reliable kick starter ignition system for instant starts, no battery needed—always ready when you are.
- • **Precision Powerhouse:** 140cc single-cylinder 4-stroke engine delivering a robust 8kW for peak performance on your dirt bike adventures.

## Overview

This 140cc single-cylinder horizontal 4-stroke racing engine kit is designed for Honda CRF50 and similar mini trail bikes, featuring a 4-speed manual clutch, CDI ignition, and a kick starter. Delivering up to 8kW power and 9.5N.M torque, it comes as a complete package including carburetor and levers, engineered for reliable performance and easy installation.

## Description

Specifications:Type: Single-cylinder, horizontal, 4-strokeGear: 1N234Ignition: CDIDisplacement: 140ccBore x Stroke: 55mm x 59mmMax. Power & Corresponding Speed: 8kw(7500±375)Max. Torque & Corresponding Speed: 9.5N.M(5000±250)Start Mode: Kick starterCompression: 9.0:1Engine Oil: 900ml, 15W/40-SE, 4 strokeOil GEARS: 4 SPEED MANUAL CLUTCH, 1N234SPROCKET: 15T 428 17mmPackage includes:1 x 140CC ENGINE1 x Kick Starter Lever1 x Gear Shift Lever1 x set Package1x Carburetor1*CDI

Review: Great exsperience - A great experience we had one come in broken but seller replaced it no issues and they work great and the sellers are wonderful !
Review: Had to trouble shoot - Runs well, felt as though there was no comression thankfully it only needed an adjustment to the clutch push rod.

## Features

- 【Wide Application】(For the reference)The engine fitd for HONDA CRF50 / CRF70 / XR50 / XR70 / Z50 / Z50R / CT70 Mini Trail / Z50 / Minitrail Monkey / XL70 ST70 / QA50 / QR50 / CL70 / SL70 / 70 Passport / ST 90K2 / ST 90K1 / CS 90 / SL 90 / ZB 50. Please note this is not a guarantee, if you are unsure, please ask your local dealer.
- 【Main Parameters 1 】Gear: 1N234; Ignition: CDI; Displacement: 140cc; Bore x Stroke: 55mm x 59mm; Max. Power & Corresponding Speed: 8kw(7500±375); Start Mode: Kick starter; Compression: 9.0:1;
- 【What You will Get】This 4 stroke racing engine kit includes 1 x 140cc engine, 1 x kick starter lever, 1 x gear shift lever, 1 x set package, 1x carburetor,1xcdi. All of these can be your good help on your travel road!
- 【Main Parameters 2 】Engine Oil: 900ml, 15W/40-SE, 4 stroke; Oil GEARS: 4 SPEED MANUAL CLUTCH, 1N234; Max. Torque & Corresponding Speed: 9.5N.M(5000±250); SPROCKET: 15T 428 17mm
- 【Quality Assurance】We have a strict quality assurance system, and products are tested before they are put on the market. If you encounter any problems, we will provide the best service and give you the most satisfactory answer!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CG9QN7JN |
| Best Sellers Rank | #41,448 in Automotive ( See Top 100 in Automotive ) #8 in Powersports Engine Kits |
| Brand | LIYUANJUN |
| Brand Name | LIYUANJUN |
| Customer Reviews | 3.7 out of 5 stars 9 Reviews |
| Manufacturer | LIYUANJUN |
| Number of Items | 1 |
| Part Number | AC-YCZYQ-4930 |

## Product Details

- **Brand:** LIYUANJUN
- **Manufacturer:** LIYUANJUN
- **Number of Items:** 1

## Images

![4 Stroke Racing Engine, 140cc Engine Horizontal Motor with Gear Shift Lever Single-Cylinder Motor for Honda CRF50 Pit Dirt Bike 4 Speed Manual Clutch Carburetor - Image 1](https://m.media-amazon.com/images/I/61yernKYm7S.jpg)
![4 Stroke Racing Engine, 140cc Engine Horizontal Motor with Gear Shift Lever Single-Cylinder Motor for Honda CRF50 Pit Dirt Bike 4 Speed Manual Clutch Carburetor - Image 2](https://m.media-amazon.com/images/I/71IuiL36OKS.jpg)
![4 Stroke Racing Engine, 140cc Engine Horizontal Motor with Gear Shift Lever Single-Cylinder Motor for Honda CRF50 Pit Dirt Bike 4 Speed Manual Clutch Carburetor - Image 3](https://m.media-amazon.com/images/I/71CD1x1Wp5L.jpg)
![4 Stroke Racing Engine, 140cc Engine Horizontal Motor with Gear Shift Lever Single-Cylinder Motor for Honda CRF50 Pit Dirt Bike 4 Speed Manual Clutch Carburetor - Image 4](https://m.media-amazon.com/images/I/71lkgaY5jCL.jpg)
![4 Stroke Racing Engine, 140cc Engine Horizontal Motor with Gear Shift Lever Single-Cylinder Motor for Honda CRF50 Pit Dirt Bike 4 Speed Manual Clutch Carburetor - Image 5](https://m.media-amazon.com/images/I/71Xt+tfmnKL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great exsperience
*by E***L on April 8, 2026*

A great experience we had one come in broken but seller replaced it no issues and they work great and the sellers are wonderful !

### ⭐⭐⭐⭐ Had to trouble shoot
*by B***Y on May 14, 2026*

Runs well, felt as though there was no comression thankfully it only needed an adjustment to the clutch push rod.

### ⭐ Not worth it.
*by J***R on February 3, 2026*

Okay, Engine got here today was supper excited so I installed it for my son so we could go out for a ride. Well the kick start only engages like 1 out of every 5 or 10 kicks. Okay got it started let it idles for 2 minutes shut it off, now go to start it again started up but the engine started to make a horrible noise so I let it cool down check oil and gas it’s all good still. Go to start it again NOW it won’t even kick over at all seems locked up! Waiting on a response from seller supper disappointed for spending over $350 on this engine and shipping.

## Frequently Bought Together

- LIYUANJUN 4 Stroke Racing Engine, 140cc Engine Horizontal Motor with Gear Shift Lever Single-Cylinder Motor For Honda CRF50 Pit Dirt Bike 4 Speed Manual Clutch Carburetor
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*Product available on Desertcart United Arab Emirates*
*Store origin: AE*
*Last updated: 2026-06-22*