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

Hyway Premium Titanikel Cylinder Kit (Pop-Up) compatible with Stihl MS391
 
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Our Price: $149.94
America 250 Sale!: $119.95
Part #: H30092

Important:

Warranty for a New Cylinder Kit.pdf


Proposition 65 Warnings:

www.p65warnings.ca.gov



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Description Technical Specs Replaces the following OEM(s)
 
Non-Genuine Titanikel Plated Cylinder Kit with Pop-Up Piston for Stihl MS391

Non-Genuine Titanikel Plated Cylinder Kit with Pop-Up Piston for Stihl MS391 Chainsaw

Enhance your Stihl MS391 chainsaw with this non-genuine Titanikel Plated Cylinder Kit, complete with a Pop-Up Piston, from HL SUPPLY. This kit is the perfect replacement for the OEM part number 1140-020-1204 and is tailored specifically for models with a 3 bolt intake, ensuring a precise fit and superior engine performance.

Replaces OEM Part Number: 1140-020-1204

Compatible with Stihl Model:

  • Stihl MS391

Important Note: This kit will ONLY fit models that use a 3 bolt intake.

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, ideal for heavy-duty tasks like cutting through dense wood or felling large trees.
  • Improved Efficiency: The efficient combustion process enhances fuel economy, reducing the fuel needed for the same power output.
  • Enhanced Torque: More torque makes cutting through tough materials easier, reducing strain on both the operator and the engine.

What is Titanikel Plating?

Titanikel plating is a proprietary technology by Hyway, utilizing a high-temperature steam plating process where titanium and nickel are combined. This occurs at temperatures between 900 to 1000 degrees Celsius, resulting in a robust, wear-resistant surface perfect for high-performance engine components like cylinders.

Titanikel Plating Process:

The process involves multi-composite electroplating, coating the cylinder with a titanium-nickel composite. After plating, the surface is polished with diamond tools due to titanium's high strength, achieving an exceptionally smooth and efficient finish.

Benefits of Titanikel Plating:

  • High Temperature Resistance: Titanikel can withstand extreme heat, ensuring the cylinder's integrity during heavy use.
  • Durability: The titanium-nickel composite provides superior wear resistance, extending the life of your chainsaw's engine.
  • Chemical Resistance: Titanium's natural resistance to chemicals enhances the longevity of the cylinder in various conditions.
  • Smooth Operation: The smooth finish reduces friction, improving engine efficiency and reducing wear on moving parts.
  • Optimal Strength-to-Weight Ratio: Titanikel offers a balance of high strength and low weight, crucial for chainsaw performance.

From HL SUPPLY, this Titanikel Plated Cylinder Kit with Pop-Up Piston offers a cost-effective, high-quality solution to boost the performance of your Stihl MS391 chainsaw.

Fits models:
  • Stihl MS391
    This will ONLY fit models that use a 3 bolt intake

Average Customer Review: Average Customer Review: 2.5 of 5 2.5 of 5 Total Reviews: 3 Write a review.

  0 of 0 people found the following review helpful:
 
1 of 5 Titanickel MS391 cylinder and piston May 18, 2026
Reviewer: Tom from Bridgewater NJ  
Big waste of time and money.  They dont mention the saw will blow up after the first use with the existing crank and bearings due to particulates that cannot be removed if it blew once.  Thats why the warranty is 30 days.  Dont get taken.  It is probably a waste or reach to think you can also replace the crank and bearings.  Dissapointed in HL Supply and Stihl has lost my confidence

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  0 of 0 people found the following review helpful:
 
1 of 5 Wasn't even a titanickel hyway cylinder April 7, 2026
Reviewer: Robert Hatcher from Baconton, GA United States  
I had to order this cylinder twice.The first time the transfer covers where leaking so I had to return it and the next time they sent me a cylinder that was clearly not a titan nickel cylinder or even a hyway cylinder. You could tell they put titan nickel transfer covers on a low quality cylinder of some kind. I couldn't keep returning the item because the customer of mine needed his saw. Needless to say it ran very week.they take there sweet time on returns and are very rude about it. They will request pictures of the items that are to be returned and take there time sending a return lable and will not send another one right away will take over a month to resolve if the ever send something useable

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  0 of 0 people found the following review helpful:
 
5 of 5 STIHL chainsaw January 23, 2026
Reviewer: Francisco Rodas from Falls Church, VA United States  
It works great

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