1. Pistons, Rings & Piston Kits Products
  2. sku: 6468854135769533
  3. PISTONS 370245

J.E. PISTONS 370245 Je Piston Kit Compress 0.188 To 4.125 11.0

fits model: M8, 125.

370245 J.e. Pistons Je M8 Piston Kit - 0.188 Inch Oversize To 4.125 11.0 1 Compress

( Brand: J.e. Pistons ), ( Manufacturer Part Number: 370245 ), ( Type: Engine ), ( Country/region Of Manufacture: United States ), ( Manufacturer Warranty: 1 Year Manufacturer Warranty ), ( Authorized Dealer: Yes ), ( Bore: 4.125in. ), ( Compatibility Disclaimer: Compatibility Chart Information Provided By ), ( Compression: 11.0 ), ( Legal Disclaimer: Your Local Laws Before Purchasing. ), ( Photo Disclaimer: For Reference Only, May Differ From Product, See Item Details. ), ( Sizing: 0.188in. Oversize ), ( Vehicletype: American Vtwin )

Review J.E. PISTONS Je Piston Kit 0.188 Inch Oversize To 4.125 11.0 Compress fits M8 125

The JE Pistons 370245 M8 piston kit, with a compression ratio of 11.0:1, is a high-performance solution for enthusiasts seeking optimal power and efficiency from their engine. This piston kit is designed specifically for applications requiring a bore size of 4.125 inches and a stroke length of 3.702 inches, making it an excellent fit for various V8 engines.

Each piston in the kit is meticulously crafted using JE Pistons' proprietary forging process, ensuring unmatched strength and durability. The M8 piston design features a low-friction, full-floating wrist pin and a state-of-the-art, alumina-silicon-carbide coating on the piston skirts and crowns. This advanced coating reduces friction, enhances ring seal, and improves overall engine performance.

The piston crown design includes optimized dome shape and deck height, allowing for efficient combustion and improved power output. The pistons also feature a lightweight, yet strong, design, reducing reciprocating mass for quicker engine response and smoother power delivery.

The JE Pistons 370245 M8 piston kit is not only a performance upgrade but also an aesthetic one. Each piston is carefully machined and finished to perfection, providing a polished look that complements any engine bay.

In summary, the JE Pistons 370245 M8 piston kit is a high-performance solution designed for engines with a bore size of 4.125 inches and a stroke length of 3.702 inches. With its advanced design features, unparalleled strength and durability, and eye-catching finish, this piston kit is a worthy investment for any automotive enthusiast seeking to maximize power and efficiency.

Pros and Cons of Buying JE Pistons 370245 M8 Piston Kit (0.188 4.125 11.0 compress)

The JE Pistons 370245 M8 Piston Kit is a popular choice among engine builders and automotive enthusiasts. This piston kit is designed for applications requiring a 0.188-inch piston ring gap, 4.125-inch bore size, and 11.0:1 compression ratio. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this piston kit.

Pros:

1. High-quality materials: JE Pistons are known for their high-quality forged pistons made from 2618-T6 aluminum alloy. This material offers excellent strength, durability, and thermal conductivity.

2. Precision manufacturing: JE Pistons use CNC machining and advanced measuring technologies to ensure that each piston is manufactured to the closest tolerances possible. This results in a perfect fit and optimal engine performance.

3. Customizable: The JE Pistons 370245 M8 Piston Kit is available in various sizes, allowing customers to choose the perfect piston kit for their specific engine application.

4. Enhanced power output: The higher compression ratio of this piston kit can help improve engine power output and efficiency, making it an attractive option for performance enthusiasts.

Cons:

1. Cost: The JE Pistons 370245 M8 Piston Kit is a premium product with a higher price point compared to some other aftermarket piston options. This may be a deterrent for budget-conscious buyers.

2. Requires skilled labor: Installing pistons, especially high-performance ones like those in the JE Pistons 370245 M8 Piston Kit, requires a significant amount of skill and expertise. This may add to the overall cost of the project.

3. May not be suitable for all applications: Although the JE Pistons 370245 M8 Piston Kit is a versatile option, it may not be the best choice for all engine applications. It is essential to ensure that the piston kit is compatible with your engine and intended use before making a purchase.

Conclusion:

The JE Pistons 370245 M8 Piston Kit is an excellent choice for those seeking high-performance pistons with exceptional quality, precision manufacturing, and customizability. While it comes with a higher price tag and may require skilled labor for installation, the potential benefits such as enhanced power output and improved engine efficiency may outweigh the costs for performance enthusiasts. Ultimately, the decision to purchase this piston kit depends on your specific engine application, budget, and performance goals. If these factors align, the JE Pistons 370245 M8 Piston Kit could be an excellent investment for your engine project.

Details:

Dome/ dish features smooth flowing radii; require no debarring or preparation. 4.375 Stroke, From Dayton to Bonneville, JE Pistons continues set the standards in piston design. JE has recorded wins at Dayton, low Eats on the drag strip and land speed records Bonneville. Kit includes Pistons, rings, piston pins and cir clips.

Made in the USA Machined from 2618-T6 high-tensile forged aluminum.

part #: 370245 prices

  • $404.98-$449.99

specifications pistondon:

  • for models: M8, 125
  • brand: J.e. Pistons
  • mpn: 370245
  • type: Engine
  • country/region of manufacture: United States
  • manufacturer warranty: 1 Year Manufacturer Warranty
  • authorized dealer: Yes
  • bore: 4.125in.
  • compatibility disclaimer: Compatibility Chart Information Provided By
  • compression: 11.0
  • legal disclaimer: Your Local Laws Before Purchasing.
  • photo disclaimer: For Reference Only, May Differ From Product, See Item Details.
  • sizing: 0.188in. Oversize
  • vehicletype: American Vtwin

returns pistondon:

  • policy: Returns Accepted
  • paid by: Buyer
  • time: 30 Days

general pistondon:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
  • condition: New

seller pistondon:

  • city: Cedar Park, Texas
  • # reviews: 175678
  • rating: 97.9%

shipping pistondon:

  • cost: $0.00
  • type: Fixed
  • service: Expedited, Standard
  • class: Expedited, Standard
  • transit: 3-5 Days

payments pistondon:

  • credit card: Discover
  • wallet: Paypal
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offer pistondon:

  • started: May 18, 2025
  • quantity: 9
  • options: Ship-to-home
  • availability: In Stock
  • best offers: True
  • sold: 0
for models: m8, 125, type: engine, country/region of manufacture: united states, manufacturer warranty: 1 year manufacturer warranty, authorized dealer: yes, bore: 4.125in., compatibility disclaimer: compatibility chart information provided by, compression: 11.0, legal disclaimer: your local laws before purchasing., photo disclaimer: for reference only, may differ from product, see item details., sizing: 0.188in. oversize, vehicletype: american vtwin,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 6468854135769533,

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