---
product_id: 624679105
title: "140CC Engine 4 Stroke Racing Engine, 4 Speed Horizontal Single Cylinder Motor Engine CDI Kick Starter Manual Clutch Fit For Pit Dirt Bike, Honda CRF50 CRF70 XR50 XR70 Z50 Z50R"
brand: "ebikestar"
price: "KSh162981"
currency: KES
in_stock: true
reviews_count: 8
category: "Ebikestar"
url: https://www.desertcart.co.ke/products/624679105-140cc-engine-4-stroke-racing-engine-4-speed-horizontal-single
store_origin: KE
region: Kenya
---

# 8kW max power @ 7500 RPM 140cc high-displacement power 4-speed manual clutch precision 140CC Engine 4 Stroke Racing Engine, 4 Speed Horizontal Single Cylinder Motor Engine CDI Kick Starter Manual Clutch Fit For Pit Dirt Bike, Honda CRF50 CRF70 XR50 XR70 Z50 Z50R

**Brand:** ebikestar
**Price:** KSh162981
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your ride, dominate the dirt!

## Quick Answers

- **What is this?** 140CC Engine 4 Stroke Racing Engine, 4 Speed Horizontal Single Cylinder Motor Engine CDI Kick Starter Manual Clutch Fit For Pit Dirt Bike, Honda CRF50 CRF70 XR50 XR70 Z50 Z50R by ebikestar
- **How much does it cost?** KSh162981 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/624679105-140cc-engine-4-stroke-racing-engine-4-speed-horizontal-single)

## Best For

- ebikestar enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Compatibility:** Fits a wide range of Honda mini trail and pit bike models, making upgrades effortless and fast.
- • **Race-Ready 140cc Powerhouse:** Unleash 8kW of raw, controlled power engineered for peak performance on your pit bike.
- • **Durable Aluminum Alloy Build:** Crafted from premium aluminum alloy and cast steel for rugged durability and superior heat dissipation.
- • **Precision 4-Speed Manual Clutch:** Experience seamless gear shifts with a 4-speed manual clutch designed for ultimate control and responsiveness.
- • **Complete Installation Kit Included:** Everything you need—engine, kick starter, carburetor, CDI, and more—ready to get you on the track ASAP.

## Overview

This 140cc 4-stroke single-cylinder racing engine delivers 8kW max power at 7500 RPM with a 4-speed manual clutch, built from durable aluminum alloy and cast steel. Designed for Honda CRF50/70, XR50/70, Z50 series, and similar mini trail bikes, it includes a full installation kit for quick upgrades and superior heat management for long-lasting performance.

## Description

Description: Material: Aluminium Alloy, Cast Steel Type: Single-cylinder, Horizontal, Four-stroke Gear: 1N234 Ignition: CDI Displacement: 140cc Bore x Stroke: 55* 59mm/2.2*2.3in Max. Power & Corresponding Speed: 8kw(7500±375) Max. Torque & Corresponding Speed: 9.5N.M(5000±250) Start Mode: Kick Starter Compression: 9.0:1 Engine Oil: 900ml/30.44Oz, 15W/40-SE, 4 Stroke Oil Gears: 4 Speed Manual Clutch, 1N234 Sprocket: 14T 428 17mm/0.67in Package Included: 1*140CC Engine 1*Kick Starter Lever 1*Gear Shift Lever 1*Sprocket Cover 1*Washer 2*Gaskets 1*Carburetor 1*CDI 1*Intake Manifold 4*Screws Applicable Models: 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 /

Review: Easy to install - I bought this as a replacement from my ssr 125 TR, was very easy to install, was able to hook it up to the previous wiring by connecting three wires and the cdi box. The bike started up right away with no issues after I connected everything. only cons I have is that it is difficult to find nuetral, the gearbox can be very stiff and stubborn when trying to do so, the 1-0-2-3-4 transmission is less efficient than the 0-1-2-3-4 gearboxes on my other ssr pitbikes, other complaint i have is the very stiff clutch, the lever requires alot of pressure to pull back and makes it difficult to use only two fingers but i am hoping the spring will become more flexible over time. Overall I am satisfied with the engine and dont think i would have found a better one for this price, I will update this review if any major issues come up.
Review: Out of the box GARBAGE ! - Garbage !!! Out of box with smashed unusable connector to CDI. I was able to use an old connector and install into the bike. Just to find out the motor has zero compression. Absolute junk

## Features

- 【High Performance Engine】A high performance single cylinder, horizontal 4-stroke engine,140cc Displacement, 8kw Max Power, 7500±375 ,Corresponding Speed, 9.5N.M Torque. CDI Ignition System, 4 Speed Manual Clutch,1N234 Gear, delivers an impressive surge of strength and control to the vehicle.
- 【Premium Materials & Excellent Performance】The 140cc engine kit is made of high-quality aluminum alloy and cast steel, sturdy and durable. The outside of the cylinder is covered with metal sheets that release the heat generated by the engine directly into the air. It has strong adaptability to environmental changes, fast startup, strong heat dissipation, and is suitable for long-term use.
- 【Applicable models】140cc pit bike engine for HONDA CRF50 / CRF70 / XR50 / XR70 / Z50 / Z50R / CT70 Mini Trail / Z50 / Minitrail Monkey / XL70 ST70 /ST 90K1 / CS 90 / SL 90 / ZB 50 / QA50 / QR50 / CL70 / SL70 / 70 Passport / ST 90K2.
- 【Widely Used】140cc engine is widely used in motorcycles, bicycles, models, skateboards, etc. It has engines and accessories with stable performance, strong power, long life, and other excellent qualities. And the complete accessories allow you to complete installation and start using it in a short period of time.
- 【Package includes】1*140CC Engine, 1*Kick Starter Lever, 1*Gear Shift Lever, 1*Sprocket Cover, 1*Washer, 2*Gaskets, 1*Carburetor, 1*CDI, 1*Intake Manifold, 4*Screws.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Ebikestar |
| Brand | Ebikestar |
| Model | 140cc pit bike engine |
| Item model number | 140cc engine |
| Exterior | Painted |
| Manufacturer Part Number | 140cc |

## Images

![140CC Engine 4 Stroke Racing Engine, 4 Speed Horizontal Single Cylinder Motor Engine CDI Kick Starter Manual Clutch Fit For Pit Dirt Bike, Honda CRF50 CRF70 XR50 XR70 Z50 Z50R - Image 1](https://m.media-amazon.com/images/I/71vCn7Zw02L.jpg)
![140CC Engine 4 Stroke Racing Engine, 4 Speed Horizontal Single Cylinder Motor Engine CDI Kick Starter Manual Clutch Fit For Pit Dirt Bike, Honda CRF50 CRF70 XR50 XR70 Z50 Z50R - Image 2](https://m.media-amazon.com/images/I/61hDNCZ3LBL.jpg)
![140CC Engine 4 Stroke Racing Engine, 4 Speed Horizontal Single Cylinder Motor Engine CDI Kick Starter Manual Clutch Fit For Pit Dirt Bike, Honda CRF50 CRF70 XR50 XR70 Z50 Z50R - Image 3](https://m.media-amazon.com/images/I/61SR49HzDCL.jpg)
![140CC Engine 4 Stroke Racing Engine, 4 Speed Horizontal Single Cylinder Motor Engine CDI Kick Starter Manual Clutch Fit For Pit Dirt Bike, Honda CRF50 CRF70 XR50 XR70 Z50 Z50R - Image 4](https://m.media-amazon.com/images/I/61Dw+v6GEVL.jpg)
![140CC Engine 4 Stroke Racing Engine, 4 Speed Horizontal Single Cylinder Motor Engine CDI Kick Starter Manual Clutch Fit For Pit Dirt Bike, Honda CRF50 CRF70 XR50 XR70 Z50 Z50R - Image 5](https://m.media-amazon.com/images/I/61N74lI278L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to install
*by C***H on November 3, 2025*

I bought this as a replacement from my ssr 125 TR, was very easy to install, was able to hook it up to the previous wiring by connecting three wires and the cdi box. The bike started up right away with no issues after I connected everything. only cons I have is that it is difficult to find nuetral, the gearbox can be very stiff and stubborn when trying to do so, the 1-0-2-3-4 transmission is less efficient than the 0-1-2-3-4 gearboxes on my other ssr pitbikes, other complaint i have is the very stiff clutch, the lever requires alot of pressure to pull back and makes it difficult to use only two fingers but i am hoping the spring will become more flexible over time. Overall I am satisfied with the engine and dont think i would have found a better one for this price, I will update this review if any major issues come up.

### ⭐ Out of the box GARBAGE !
*by V***T on December 23, 2025*

Garbage !!! Out of box with smashed unusable connector to CDI. I was able to use an old connector and install into the bike. Just to find out the motor has zero compression. Absolute junk

### ⭐⭐⭐⭐⭐ Great fit for Apollo Db x16 💯
*by A***N on August 16, 2025*

This engine is fantastic. No oil leaks whatsoever out of the box and it lined up just perfectly with the motor mounts on the frame of my Apollo, 125. It started first kick after I got done building the bike and runs near perfect. I just need to adjust the air fuel mixture screw on my Mikuni VM22 carb. Super stoked to ride this thing around after I break it in.

## Frequently Bought Together

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-03-01*