---
product_id: 369980251
title: "Wenyu 80cc/66cc Windowed Piston Set - 66cc/80cc Gas Motorized Bicycle"
brand: "wenyu"
price: "S/.107"
currency: PEN
in_stock: true
reviews_count: 11
url: https://www.desertcart.pe/products/369980251-wenyu-80cc-66cc-windowed-piston-set-66cc-80cc-gas-motorized
store_origin: PE
region: Peru
---

# Complete piston kit Performance upgrade 66cc/80cc compatibility Wenyu 80cc/66cc Windowed Piston Set - 66cc/80cc Gas Motorized Bicycle

**Brand:** wenyu
**Price:** S/.107
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Rev Up Your Ride with Wenyu's Piston Power!

## Quick Answers

- **What is this?** Wenyu 80cc/66cc Windowed Piston Set - 66cc/80cc Gas Motorized Bicycle by wenyu
- **How much does it cost?** S/.107 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/369980251-wenyu-80cc-66cc-windowed-piston-set-66cc-80cc-gas-motorized)

## Best For

- wenyu enthusiasts

## Why This Product

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

## Key Features

- • **Precision Fit:** Engineered for seamless installation and optimal function.
- • **Unleash the Power:** Transform your ride with enhanced performance!
- • **Universal Compatibility:** Fits a variety of gas motorized bicycle engines.
- • **Upgrade Your Experience:** Pair with high-performance components for maximum output.
- • **Durability Meets Efficiency:** Designed for cooler operation and longer lifespan.

## Overview

The Wenyu 80cc/66cc Windowed Piston Set is a high-performance upgrade designed specifically for 66cc and 80cc gas motorized bicycle engines. This comprehensive kit includes a piston, piston pin, piston rings, C clips, and gaskets, ensuring a perfect fit and easy installation. When paired with a Reed valve assembly and performance intake, this piston set significantly enhances engine power, efficiency, and longevity.

## Description

Fitment:The windowed 66cc piston kit is only for 80cc/66cc engine kits. Package include: Receive Piston, piston pin, 1 Set of piston rings, 2 piston C Clips， 2*gaskets The windowed 66cc piston kit is only for 80cc/66cc engine kits High Hole Piston; compatible with long connecting rod ONLY; DOSE NOT WORK WITH stocked manifold intake,Buyers must use high performance intake; Work only with better performance manifold intake such as G2 reed,dio reed etc and better performance carburetor such as RT carburetor, CNS carburetor or other ones Work only with better performance manifold intake such as G2 reed,dio reed etc and better performance carburetor such as RT carburetor High Hole Piston; compatible with long connecting rod ONLY;

## Features

- Fitment:The windowed 66cc piston kit is only for 80cc/66cc engine kits
- Package include:Receive Piston, piston pin, 1 Set of piston rings, 2 piston C Clips,2gaskets
- The windowed 66cc piston kit is only for 80cc/66cc engine kits
- The windowed piston fit perfectly, installed easily, with little ''clean up'' to the machined edges of the piston, before final installation. The Piston by itself, installed in the engine, would not run! Only after I added the Reed valve assembly, did the motor Roar to life with more power! The the windowed piston AND the Reed valve assembly, are a notable upgrade! If done right, you WILL notice more power, improved performance, cooler running, and longer life.
- Work only with better performance manifold intake such as G2 reed,dio reed etc and better performance carburetor such as RT carburetor
- Fit type: Universal
- Part number: AMWEN-MZ0158

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | wenyu |
| Item Weight | 4.5 ounces |
| Package Dimensions | 5 x 3 x 2.1 inches |
| Item model number | AMWEN-MZ0158 |
| Manufacturer Part Number | AMWEN-MZ0158 |

## Images

![Wenyu 80cc/66cc Windowed Piston Set - 66cc/80cc Gas Motorized Bicycle - Image 1](https://m.media-amazon.com/images/I/51JBsIWd1FS.jpg)
![Wenyu 80cc/66cc Windowed Piston Set - 66cc/80cc Gas Motorized Bicycle - Image 2](https://m.media-amazon.com/images/I/51RvPRWDTXL.jpg)
![Wenyu 80cc/66cc Windowed Piston Set - 66cc/80cc Gas Motorized Bicycle - Image 3](https://m.media-amazon.com/images/I/51NU0vX-PhS.jpg)
![Wenyu 80cc/66cc Windowed Piston Set - 66cc/80cc Gas Motorized Bicycle - Image 4](https://m.media-amazon.com/images/I/51PCoJyT6DS.jpg)
![Wenyu 80cc/66cc Windowed Piston Set - 66cc/80cc Gas Motorized Bicycle - Image 5](https://m.media-amazon.com/images/I/51ng+DEM9oS.jpg)

## Questions & Answers

**Q: Does it work for seeutk 80cc**
A: It worked on my seeutk engine, its a low hole piston

**Q: What size is the roller bearing???**
A: My husband just bought this item.  He says the roller bearing is standard size.

**Q: I have 3 motors and this fits not one of them and i know therr high hole so whats going on with your product**
A: It isn't a high hole piston. It says it is but it's a low hole

**Q: It says high hole but looks lije low hole. Wich is it?**
A: It says it's a high hole piston but alot of us including myself got a low hole piston. There is the same listing on eBay and same problem with that. The only US seller for a high hole windowed piston is CDHPOWER. You can find the listing on eBay.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Low hole piston not high hole.
  

*by J***A on Reviewed in the United States on August 31, 2022*

Worked perfect with dioreed and racing carb high compression head and BBR tuning thrust exhaust. Although I had a China expansion chamber that gave me better all around better torque it had a pin hole on the weld. So back to the F2 thrust exhaust which is the loudest exhaust by far you can buy. Overall this piston has been working well as long as you set the squish properly you'll love it. Won't work without reed valve and tuned carb with proper jets and fore mentioned performance parts. With a 36t sprocket I'm at about 45mph top speed. Might I mention I weigh about 250lbs. Also the BBR bottom end has been an awesome bottom to build off of.

### ⭐ 1.0 out of 5 stars







  
  
    Wrong wrong wrong
  

*by J***Y on Reviewed in the United States on October 22, 2023*

Should have listened to the reviews!!!!! Most kits are short hole pistons and this isn’t!! Don’t know why they even sell this piece of crap!! It’s junk .. DONT DO IT!!!!!

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great piston for the price!
  

*by J***. on Reviewed in the United States on July 21, 2023*

Good machining on my piston I received! Definitely a lot better then trying to do it myself! I also needed to change my piston bearing and it had little to no play once installed!!

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.pe/products/369980251-wenyu-80cc-66cc-windowed-piston-set-66cc-80cc-gas-motorized](https://www.desertcart.pe/products/369980251-wenyu-80cc-66cc-windowed-piston-set-66cc-80cc-gas-motorized)

---

*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-01-23*