---
product_id: 428302359
title: "4 Stroke 140cc Dirt Bike Motorcycle Complete Engine Kit, Engine Motor Carburetor Single Cylinder CDI Kick Starter Lever Gear Shift Lever Manifold Set for CRF50 CRF70 XR50 XR70 Z50R Z50 CT70 USA STOCK"
brand: "dnysysj"
price: "₱64401"
currency: PHP
in_stock: true
reviews_count: 8
url: https://www.desertcart.ph/products/428302359-4-stroke-140cc-dirt-bike-motorcycle-complete-engine-kit-engine
store_origin: PH
region: Philippines
---

# Complete Kit 4-speed Manual 140cc Power 4 Stroke 140cc Dirt Bike Motorcycle Complete Engine Kit, Engine Motor Carburetor Single Cylinder CDI Kick Starter Lever Gear Shift Lever Manifold Set for CRF50 CRF70 XR50 XR70 Z50R Z50 CT70 USA STOCK

**Brand:** dnysysj
**Price:** ₱64401
**Availability:** ✅ In Stock

## Summary

> 🏁 Rev Up Your Adventure with the Ultimate Engine Kit!

## Quick Answers

- **What is this?** 4 Stroke 140cc Dirt Bike Motorcycle Complete Engine Kit, Engine Motor Carburetor Single Cylinder CDI Kick Starter Lever Gear Shift Lever Manifold Set for CRF50 CRF70 XR50 XR70 Z50R Z50 CT70 USA STOCK by dnysysj
- **How much does it cost?** ₱64401 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/428302359-4-stroke-140cc-dirt-bike-motorcycle-complete-engine-kit-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

- • **Built to Last:** High-quality materials ensure durability and performance for all your cycling adventures.
- • **Unleash Your Ride:** Experience the thrill of a powerful 140cc single-cylinder engine designed for adventure.
- • **Precision Engineering:** Crafted with a 4-speed manual clutch for seamless gear shifts and maximum control.
- • **Kickstart Your Journey:** Equipped with a reliable kick starter for instant ignition and excitement.
- • **Versatile Compatibility:** Fits a wide range of models, making it the ultimate upgrade for your mini bike.

## Overview

The 4 Stroke 140cc Dirt Bike Motorcycle Complete Engine Kit is a high-performance engine solution designed for various mini bikes, including popular models like CRF50 and XR70. This kit includes everything you need for a powerful upgrade, featuring a single-cylinder, 4-stroke engine with a 4-speed manual clutch, kick starter, and essential components like a carburetor and CDI. Perfect for cycling enthusiasts looking to enhance their riding experience.

## Description

140cc Engine Carburetor CDI Kick Starter Lever Gear Shift Lever Manifold SetSpecifications: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 17mmFits (For the reference):· For HON-DA 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 /If you are unsure, please ask your local dealer.Package includes:1 x 140CC ENGINE1 x Kick Starter Lever1 x Gear Shift Lever1 x Manifold set Package1 x Carburetor1 x CDI

## Features

- 【140cc Engine】Type: Single-cylinder, horizontal, 4-stroke; Gear: 1N234; Ignition: CDI; Displacement: 140cc; Bore x Stroke: 55mm x 59mm;Max. Power & Corresponding Speed: 8kw(7500±375)； Max. Torque & Corresponding Speed: 9.5N.M(5000±250)
- 【Specifications】Start Mode: Kick starter; Compression: 9.0:1; Engine Oil: 900ml, 15W/40-SE, 4 stroke; Oil gears: 4 speed manual clutch, 1n234; Sprocket: 15T 428 17mm
- 【Package Includes】1 x 140CC ENGINE; 1 x Kick Starter Lever; 1 x Gear Shift Lever; 1 x Manifold set Package; 1x Carburetor; 1*CDI
- 【Fits (For the reference)】For HON-DA 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
- 【Widely Used】Widely used in cycling, it can be used for bicycles, motorcycles, models, skateboards, etc. High quality, powerful, and excellent bicycle engine and motor accessories.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | DNYSYSJ |
| Brand | DNYSYSJ |
| Manufacturer Part Number | 589512010 |

## Images

![4 Stroke 140cc Dirt Bike Motorcycle Complete Engine Kit, Engine Motor Carburetor Single Cylinder CDI Kick Starter Lever Gear Shift Lever Manifold Set for CRF50 CRF70 XR50 XR70 Z50R Z50 CT70 USA STOCK - Image 1](https://m.media-amazon.com/images/I/71vVCd7JURL.jpg)
![4 Stroke 140cc Dirt Bike Motorcycle Complete Engine Kit, Engine Motor Carburetor Single Cylinder CDI Kick Starter Lever Gear Shift Lever Manifold Set for CRF50 CRF70 XR50 XR70 Z50R Z50 CT70 USA STOCK - Image 2](https://m.media-amazon.com/images/I/61sglKfyYaL.jpg)
![4 Stroke 140cc Dirt Bike Motorcycle Complete Engine Kit, Engine Motor Carburetor Single Cylinder CDI Kick Starter Lever Gear Shift Lever Manifold Set for CRF50 CRF70 XR50 XR70 Z50R Z50 CT70 USA STOCK - Image 3](https://m.media-amazon.com/images/I/81kg0MZIe3L.jpg)
![4 Stroke 140cc Dirt Bike Motorcycle Complete Engine Kit, Engine Motor Carburetor Single Cylinder CDI Kick Starter Lever Gear Shift Lever Manifold Set for CRF50 CRF70 XR50 XR70 Z50R Z50 CT70 USA STOCK - Image 4](https://m.media-amazon.com/images/I/61vzguKzCvL.jpg)
![4 Stroke 140cc Dirt Bike Motorcycle Complete Engine Kit, Engine Motor Carburetor Single Cylinder CDI Kick Starter Lever Gear Shift Lever Manifold Set for CRF50 CRF70 XR50 XR70 Z50R Z50 CT70 USA STOCK - Image 5](https://m.media-amazon.com/images/I/71DybeziYZL.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

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    swapped out the old tired 50cc
  

*by S***Y on Reviewed in the United States on August 29, 2024*

This thing rips! Less top speed than the old setup I think but WAY MORE TORQUE! Kids are happy so Im happy.

### ⭐⭐ 2.0 out of 5 stars







  
    Artículo dañado
  
  

*by J***S on Reviewed in the United States on September 5, 2024*

Rápido la entrega pero llego dañada

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Works great
  

*by T***Y on Reviewed in the United States on August 2, 2024*

Little difficult tuning wise but it’s strong and reliable

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.ph/products/428302359-4-stroke-140cc-dirt-bike-motorcycle-complete-engine-kit-engine](https://www.desertcart.ph/products/428302359-4-stroke-140cc-dirt-bike-motorcycle-complete-engine-kit-engine)

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-01-26*