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Hyway Premium Nikasil Cylinder Kit (Pop-Up) compatible with Stihl MS391

Hyway Premium Nikasil Cylinder Kit (Pop-Up) compatible with Stihl MS391
 
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Our Price: $124.94
America 250 Sale!: $99.95
Part #: H30091

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Warranty for a New Cylinder Kit.pdf


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Description Technical Specs Replaces the following OEM(s)
 
Hyway High-Quality Aftermarket Nikasil Plated Cylinder Kit (Pop-Up) - 49mm Compatible with <b>Stihl</b> MS391

Hyway High-Quality Aftermarket Nikasil Plated Cylinder Kit

This premium cylinder kit with pop-up piston, designed as a replacement for OEM part number 1140-020-1204, ensures your Stihl MS391, MS311 Chainsaw operates at peak performance.

Note: This kit is designed specifically for models with a 3 bolt intake. This kit will add 5 cc's to your MS311.

Key Features:

  • Precision Fit: Engineered to match the exact specifications of your Stihl MS391, ensuring a seamless fit and optimal performance.
  • Durable Construction: Made from high-grade materials, this Nikasil plated cylinder kit is built to withstand rigorous use and extend the lifespan of your equipment.
  • Complete Kit: Comes complete with cylinder, piston, rings, and clips, providing everything you need for a hassle-free installation.
  • Enhanced Performance: Designed to meet or exceed OEM standards, this kit enhances the power and efficiency of your Chainsaw.

What is a Pop-Up Piston?

A pop-up piston is a specialized piston design used in some chainsaw engines. Unlike traditional pistons that have a flat top, pop-up pistons feature a raised center section. This design allows for a higher compression ratio within the combustion chamber. When the piston moves upward in the cylinder, the raised center section compresses the fuel-air mixture more intensely than a traditional flat-top piston. This increased compression leads to a more powerful explosion and greater torque output.

Benefits of a Pop-Up Piston:

  • Increased Power: The higher compression ratio generated by a pop-up piston results in a significant increase in power and torque. This is especially beneficial for applications that demand heavy-duty performance, such as cutting through dense wood or felling large trees.
  • Improved Efficiency: The more efficient combustion process created by a pop-up piston can lead to improved fuel economy, reducing the amount of fuel needed to produce the same amount of power.
  • Enhanced Torque: The increased torque generated by a pop-up piston can make it easier to drive the chainsaw through tough cuts, reducing strain on the operator and the engine.

What is Nikasil Plating?

Nikasil plating is a composite coating made from nickel and silicon carbide. This combination creates a remarkably hard, wear-resistant surface that is ideal for engine components. It's a technology often used in high-performance applications like Formula One racing.

Benefits of Hyway's Nikasil Plating:

  • Exceptional Durability: Nikasil-plated cylinders are highly resistant to wear and tear, ensuring long-lasting performance.
  • Improved Heat Dissipation: The plating's properties help to efficiently dissipate heat, preventing overheating and maintaining optimal engine temperatures.
  • Reduced Friction: The smooth surface of a Nikasil-plated cylinder reduces friction between the piston and cylinder wall, enhancing engine efficiency and reducing wear.
  • Enhanced Performance: Hyway's Nikasil-plated cylinder kits are designed to meet or exceed OEM standards, providing improved power and performance.

Why Choose Hyway?

Hyway's Nikasil plated cylinder kits offer a reliable and high-quality solution for your chainsaw. Their commitment to precision manufacturing ensures a perfect fit and optimal engine performance. By choosing Hyway, you're investing in a product that is built to last and deliver exceptional results.

In conclusion, Hyway's Nikasil plating technology provides a significant advantage in terms of durability, performance, and overall engine health. If you're looking for a top-quality replacement cylinder kit, consider Hyway's offerings.

Whether you're a professional or a DIY enthusiast, the Hyway Nikasil Cylinder Kit offers reliability and performance you can count on. Keep your Stihl equipment in top condition with this high-quality aftermarket solution.

Fits models:
  • Stihl MS391, MS311 (would add 5 cc's to the MS311)
    This will ONLY fit models that use a 3 bolt intake

Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 2 Write a review.

  0 of 0 people found the following review helpful:
 
5 of 5 Perfection October 28, 2025
Reviewer: Daniel Criswell from Elizabethtown, KY United States  
This product worked perfectly when installing on my saw. The bore was a little bigger but not going to complain about a little more power

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  0 of 0 people found the following review helpful:
 
5 of 5 Cylinder kit April 24, 2025
Reviewer: Anonymous Person from Middletown, OH United States  
Got it super fast , looks great haven’t installed yet.

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