---
product_id: 72800031
title: "Racing Carburetor 2 Stroke 49cc 66cc 70cc 80cc With Air Filter For 2 Stroke Engine Motorized Bicycle BLUE"
brand: "mayspare"
price: "1274148₫"
currency: VND
in_stock: true
reviews_count: 13
category: "May Spare"
url: https://www.desertcart.vn/products/72800031-racing-carburetor-2-stroke-49cc-66cc-70cc-80cc-with-air
store_origin: VN
region: Vietnam
---

# Optimized for 49cc-80cc 2-stroke engines 19mm precision carburetor Tool-free idle adjustment screw Racing Carburetor 2 Stroke 49cc 66cc 70cc 80cc With Air Filter For 2 Stroke Engine Motorized Bicycle BLUE

**Brand:** mayspare
**Price:** 1274148₫
**Availability:** ✅ In Stock

## Summary

> ⚡ Unlock your bike’s true speed potential with zero hassle!

## Quick Answers

- **What is this?** Racing Carburetor 2 Stroke 49cc 66cc 70cc 80cc With Air Filter For 2 Stroke Engine Motorized Bicycle BLUE by mayspare
- **How much does it cost?** 1274148₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/72800031-racing-carburetor-2-stroke-49cc-66cc-70cc-80cc-with-air)

## Best For

- mayspare enthusiasts

## Why This Product

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

## Key Features

- • **Durable Aluminum Build:** Lightweight yet rugged design ensures long-lasting performance and resistance to wear under high RPM conditions.
- • **Customizable Jet Sizing:** Easily tune performance with a 6mm jet and thread tape for altitude or power tweaks—perfect for enthusiasts who demand control.
- • **Precision 19mm Carburetor:** Engineered for peak airflow and throttle response on 2-stroke engines from 49cc to 80cc.
- • **Vibration-Resistant Choke:** Stay in control with a choke that won’t slip or vibrate loose, delivering consistent starts every time.
- • **Plug-and-Play Installation:** No throttle adjustments needed—get your ride ready faster with simple bolt-on setup and included air filter.

## Overview

The Racing Carburetor 2 Stroke is a high-performance 19mm aluminum carburetor designed for 49cc to 80cc 2-stroke engines. Featuring a built-in air filter, tool-free idle adjustment, and customizable jet sizing, it offers easy installation and reliable throttle response. Perfect for motorized bicycles, this carburetor balances durability with precision tuning to elevate your ride’s power and efficiency.

## Description

Buy Racing Carburetor 2 Stroke 49cc 66cc 70cc 80cc With Air Filter For 2 Stroke Engine Motorized Bicycle BLUE: Carburetors - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Best for the Price - I've been trying to fix up all my toys for spring, ended up needing a carb. I looked around and this is the best for the price. I have likes and dislikes, Its starts super easy, the choke doesn't vibrate itself out of place, it is a good increase in filter size, and it doesn't stall out at low speed as much. Its jetted a little low for me, my top speed is 15 mph lower and I'm now at 22mph. For installation its pretty simple there is no need for instructions, just use the adaptor and pipe tape (tape up the inlet tube and put adaptor over and its good to install). AND DON'T OVER TIGHTEN IT, most people who own these bikes don't have mechanical experience and they don't realize no matter what your engine and all parts for it are probably Chinese so you need to just get it snug. And keep your old carb you might need to switch the cable holder.
Review: Great item - Simple to install

## Features

- 19mm Carburetor With Filter: 58mm/ Color: Red and Blue
- Fits 2 stroke 49cc 66cc 70cc 80cc engine With No Adjusting Throttle
- The screw on the side of the carburetor is for the idle.
- Jet: Normally for 6mm jet,you can start with Start with the smallest size jet, the jet does not need to be torqued down with a great deal of force.
- Note:You have to wrap several layers of thread tape around it if you are replacing the NT carb that came with your 66/80cc bicycle engine, and if you are at a higher elevation you may need to change jet size for this carburetor to run properly.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07F77LS3C |
| Best Sellers Rank | #107,203 in Automotive ( See Top 100 in Automotive ) #409 in Powersports Carburetors |
| Brand | MaySpare |
| Customer Reviews | 4.0 4.0 out of 5 stars (1,941) |
| Date First Available | July 25, 2018 |
| Exterior | Aluminum |
| Flange Type | Bolt On |
| Is Discontinued By Manufacturer | No |
| Item Weight | 15.5 ounces |
| Manufacturer Part Number | US-49CC-B |
| Product Dimensions | 3.94"D x 4.45"W x 3.5"H |
| Recommended Uses For Product | Motorcycle |
| Specific Uses For Product | Performance,Power |
| UPC | 781520122334 |
| Vehicle Service Type | Motorized Bicycle |

## Product Details

- **Brand:** MaySpare
- **Flange Type:** Bolt On
- **Recommended Uses For Product:** Motorcycle
- **Specific Uses For Product:** Performance,Power
- **Vehicle Service Type:** Motorized Bicycle

## Images

![Racing Carburetor 2 Stroke 49cc 66cc 70cc 80cc With Air Filter For 2 Stroke Engine Motorized Bicycle BLUE - Image 1](https://m.media-amazon.com/images/I/61rRIi-hlML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best for the Price
*by L***M on February 16, 2025*

I've been trying to fix up all my toys for spring, ended up needing a carb. I looked around and this is the best for the price. I have likes and dislikes, Its starts super easy, the choke doesn't vibrate itself out of place, it is a good increase in filter size, and it doesn't stall out at low speed as much. Its jetted a little low for me, my top speed is 15 mph lower and I'm now at 22mph. For installation its pretty simple there is no need for instructions, just use the adaptor and pipe tape (tape up the inlet tube and put adaptor over and its good to install). AND DON'T OVER TIGHTEN IT, most people who own these bikes don't have mechanical experience and they don't realize no matter what your engine and all parts for it are probably Chinese so you need to just get it snug. And keep your old carb you might need to switch the cable holder.

### ⭐⭐⭐⭐⭐ Great item
*by J***. on December 26, 2025*

Simple to install

### ⭐⭐⭐⭐ Good carb but read my review first.
*by K***N on July 18, 2025*

Carburetor isn't bad but dosen't come with any jets. I had to but a jet kit because the one jet in it is nowhere near the size for an 80cc. The jet size had to be reduced significantly to a #56, the stock jet was dumping an outrageous amount of fuel. This was purchased for a gas powered bicycle and after changing it the bike runs really good compared to the factory carb. When installing it do not crank on the screw, otherwise it will snap the carb mount. Be gentle with it plus it's not an off road machine so it will not fall off while riding down the street.

## Frequently Bought Together

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-28*