---
product_id: 32120644
title: "GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart"
brand: "goofit"
price: "¥9281"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/32120644-goofit-performance-big-bore-cylinder-kit-gy6-80cc-47mm-139qmb
store_origin: JP
region: Japan
---

# 47mm bore precision High-temp wear resistance 13mm piston pin fit GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart

**Brand:** goofit
**Price:** ¥9281
**Availability:** ✅ In Stock

## Summary

> ⚡ Unleash raw power with GOOFIT’s big bore kit—because your ride deserves the best!

## Quick Answers

- **What is this?** GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart by goofit
- **How much does it cost?** ¥9281 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/32120644-goofit-performance-big-bore-cylinder-kit-gy6-80cc-47mm-139qmb)

## Best For

- goofit enthusiasts

## Why This Product

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

## Key Features

- • **Complete Kit Included:** Everything you need—cylinders, pistons, gaskets, bolts—for a seamless overhaul.
- • **Durable Aluminum Alloy:** High-strength, wear-resistant coating ensures long-lasting performance under pressure.
- • **Engine Longevity Booster:** Robust design reduces maintenance costs by enhancing engine stability and durability.
- • **Plug & Play Installation:** Simple setup with no complex mods—upgrade your ride in no time.
- • **Precision Engine Upgrade:** 47mm big bore cylinder boosts your GY6 engine's power effortlessly.

## Overview

The GOOFIT Performance Big Bore Cylinder Kit for GY6 80cc engines features a 47mm inner diameter cylinder and a 13mm piston pin, crafted from high-strength aluminum alloy with a wear-resistant coating. Designed for easy installation without modifications, this comprehensive kit includes all necessary components to upgrade and extend the life of your ATV, scooter, moped, or go-kart engine while improving performance and reducing maintenance.

## Description

Full description not available

## Features

- Inner diameter of cylinder: 47mm,outer diameter of piston pin: 13mm.
- Replacement for gy6 49cc 50cc 60cc 80cc engine.
- Made of high-strength aluminum alloy and wear-resistant coating, it has excellent high-temperature and wear-resistant performance, and its robust structural design is able to maintain stability under high loads and long-time running conditions, prolonging the life of the engine and reducing maintenance costs.
- The installation process is simple and quick, without the need for complex modifications, allowing you to easily complete the engine upgrade and quickly improve the performance of your vehicle.
- Products include cylinders, pistons, piston rings, piston pins, piston pin clips, valve seals, gaskets, tensioner gaskets, exhaust gaskets, intake and exhaust bolts, and exhaust nuts.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | GOOFIT |
| Brand | GOOFIT |
| Item Weight | 1.76 ounces |
| Package Dimensions | 4.96 x 4.88 x 3.15 inches |
| Item model number | Group-11-B |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | Group-11-B |
| Voltage | 12 Volts |

## Images

![GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart - Image 1](https://m.media-amazon.com/images/I/61Pichj25WL.jpg)
![GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart - Image 2](https://m.media-amazon.com/images/I/71u4wFouzPL.jpg)
![GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart - Image 3](https://m.media-amazon.com/images/I/71e03fENoEL.jpg)
![GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart - Image 4](https://m.media-amazon.com/images/I/71bXVQEVNJL.jpg)
![GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart - Image 5](https://m.media-amazon.com/images/I/71QtpjbdpjL.jpg)

## Frequently Bought Together

- GOOFIT Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart
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**Shop now:** [https://www.desertcart.jp/products/32120644-goofit-performance-big-bore-cylinder-kit-gy6-80cc-47mm-139qmb](https://www.desertcart.jp/products/32120644-goofit-performance-big-bore-cylinder-kit-gy6-80cc-47mm-139qmb)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-24*