---
product_id: 183641617
title: "Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit"
brand: "top notch parts"
price: "€ 559.81"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.gr/products/183641617-top-notch-parts-replacement-12-1-big-bore-366cc-cylinder
store_origin: GR
region: Greece
---

# Complete Rebuild Kit 12:1 Compression 366cc Power Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

**Brand:** top notch parts
**Price:** € 559.81
**Availability:** ✅ In Stock

## Summary

> 🏁 Rev Up Your Adventure with the Ultimate Upgrade!

## Quick Answers

- **What is this?** Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit by top notch parts
- **How much does it cost?** € 559.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/183641617-top-notch-parts-replacement-12-1-big-bore-366cc-cylinder)

## Best For

- top notch parts enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Upgraded metal gaskets provide enhanced reliability and longevity for your engine.
- • **Easy Installation:** Designed for a straightforward installation process, so you can get back on the road faster.
- • **Unleash Your Ride:** Transform your Yamaha Warrior with a powerful 12:1 compression ratio for unmatched performance.
- • **All-Inclusive Package:** Comes with a complete rebuild gasket kit, ensuring you have everything you need for a seamless upgrade.
- • **Precision Engineering:** Crafted with Teflon-coated sides and a ceramic top piston for durability and efficiency.

## Overview

The Replacement 12:1 Big Bore 366cc Cylinder Top End Kit is designed for 1987-2004 Yamaha Warrior 350 models, offering a powerful upgrade with a 12:1 compression ratio. This kit includes a complete rebuild gasket set and features advanced materials like Teflon and ceramic for enhanced performance and durability. Perfect for enthusiasts looking to elevate their ride.

## Description

Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

## Features

- Replaces OEM Part # 1UY-11310-03-00 90387-16547-00 93210-18322-00 99530-14016-00 4KB-11351-00-001UY-11181-01-00 4GB-11610-00-00 55V-11633-00-00 93450-19095-00 1UY-11631-01-Y0 3GD-15451-00-001UY-13440-02-00 1UY-14451-01-00
- 12:1 Big Bore 366cc Cylinder Kit For 1987-2004
- Upgrade your stock warrior with this kit. 12:1 compression ratio. teflon coated side and ceramic top piston
- includes complete rebuild gasket kit. includes all as shown in the picture to complete your rebuild. upgraded metal gaskets.
- ADULT SIGNITURE REQUIRED FOR DELIVERY

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | TOP NOTCH PARTS LLC |
| Brand | TOP NOTCH PARTS |
| Item Weight | 10 pounds |
| Package Dimensions | 14 x 10 x 10 inches |
| Manufacturer Part Number | TNP-3JJ6666 |

## Images

![Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit - Image 1](https://m.media-amazon.com/images/I/812TU0nFTHL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Lots of power and damn reliable.
  

*by T***R on Reviewed in the United States on December 16, 2023*

Make sure you inspect all parts.It went together well, no issues after other than valve lash.For anyone wondering the ring gap is pre gapped.I’ve put about 55 hours on mine with no serious issues other than the valve lash nut falling off but that’s my fault

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good qaulity
  

*by J***H on Reviewed in the United States on March 14, 2024*

Worth the money!!!! Buy it big noticeable upgrade.  fast delivery

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good product
  

*by M***E on Reviewed in the United States on May 8, 2023*

Had this put on my 2001 warrior 350 and man it has some compression the starter has a hard time turning it over with my little battery may have to look into one with higher cranking amps with a jumper box on it fires up no problem. And man does it run good. May need to get a better clutch slips alittle when I'm pulling a hillclimb in 6th gear. Highly recommend this product.

## Frequently Bought Together

- Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit
- NICHE Performance Camshaft for Yamaha Big Bear Bruin Kodiak Raptor Warrior 350 400 1YW-12170-00 5UH-12170
- MOTO1988 Cam Timing Chain and Guides Kit Compatible for Yamaha Big Bear 350 YFM350FW 4x4 1987-1997 Moto 4 YFM350ER 1987-1995 RAPTOR 350 YFM350R 2004-2013 WARRIOR 350 YFM350X 1987-2004

---

## 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.gr/products/183641617-top-notch-parts-replacement-12-1-big-bore-366cc-cylinder](https://www.desertcart.gr/products/183641617-top-notch-parts-replacement-12-1-big-bore-366cc-cylinder)

---

*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-22*