WISECO 4012P6 Piston Kit Standard Compression 74CI. 1249CC 3.494 9/1

( Brand: Wiseco ), ( Manufacturer Part Number: 4012P6 ), ( Part Type: Piston Compression ), ( Make: Harley )

Review WISECO Piston Kit 74ci. 1249cc Standard Bore 3.494 Inch 9/1 Compression

The WiseCo 4012P6 piston kit is a high-performance upgrade for engines with a displacement of 74 cubic inches or 1249cc. This piston kit is designed for standard applications with a compression ratio of 3.494:1. Each piston in this kit is meticulously crafted to ensure optimal engine performance.

The pistons are made from forged 2618-T6 aluminum alloy, providing exceptional strength and durability. The piston crowns are designed with a dish shape to improve combustion efficiency, while the skirt walls are thickened to enhance rigidity and resist cylinder wall contact.

The piston rings included in this kit are made from high-quality, low-friction material. The top compression ring is a two-piece design, which allows for easier installation and better sealing. The piston rings are also designed to minimize ring groove wear, ensuring long-lasting performance.

The piston pins are made from heat-treated steel and are phosphate-coated to reduce friction and wear. The piston pin bore is chamfered for easier pin installation and removal.

The piston kit also includes new wrist pins and piston pin bushings. The wrist pins are made from heat-treated steel and are phosphate-coated for durability. The piston pin bushings are made from high-quality bronze material and are pre-lubricated with a molybdenum disulfide (Moly) coating to reduce friction and wear.

This WiseCo piston kit is a direct replacement for OEM pistons and is compatible with standard 3.494 compression engines. It is important to note that installing this piston kit requires a significant amount of engine disassembly, and it is recommended that the installation be performed by a qualified professional.

In summary, the WiseCo 4012P6 piston kit is a high-quality, performance-enhancing upgrade for engines with a displacement of 74 cubic inches or 1249cc and a standard 3.494 compression ratio. Each component in this kit is meticulously designed and manufactured to provide exceptional strength, durability, and performance.

The Wiseco 4012P6 piston kit, with a displacement of 74 ci or 1249 cc and a standard 3.494 compression ratio, can be a valuable investment for those looking to upgrade their engine's performance. Here are some potential pros and cons to consider before making a purchase.

1. Enhanced Power: Upgrading to a high-performance piston kit like the Wiseco 4012P6 can lead to increased horsepower and torque, resulting in better engine performance and improved throttle response.

2. Durability: Wiseco pistons are known for their durability due to their forged construction. This makes them a popular choice for high-performance applications where the engine may be subjected to increased stress.

3. Customizability: The Wiseco 4012P6 piston kit offers various options, such as different compression ratios, ring packages, and skirt coatings, allowing users to tailor the pistons to their specific engine build and performance requirements.

4. Improved Engine Compression: The higher compression ratio can lead to improved engine efficiency and better fuel economy.

5. Enhanced Engine Appearance: The Wiseco pistons have a distinctive appearance with their unique designs and colors, making them an attractive addition to any engine build.

1. Cost: The Wiseco 4012P6 piston kit is a premium product, and the cost may be a deterrent for some users.

2. Complex Installation: Installing a piston kit like the Wiseco 4012P6 requires a high level of mechanical skill and experience. It may be necessary to hire a professional to ensure proper installation and avoid potential engine damage.

3. Risk of Engine Damage: Installing aftermarket parts like a high-performance piston kit can increase the risk of engine damage if not done correctly. Improper installation or use of the wrong components can result in engine damage or failure.

4. Potential Compatibility Issues: It is important to ensure that the Wiseco 4012P6 piston kit is compatible with your specific engine make, model, and year. Incompatible parts can lead to engine damage or poor performance.

In conclusion, the Wiseco 4012P6 piston kit can offer significant performance benefits, including increased power, durability, and improved engine compression. However, the high cost, complex installation, and potential compatibility issues may be drawbacks for some users. Ultimately, the decision to purchase the Wiseco 4012P6 piston kit depends on your specific engine build goals, mechanical skills, and budget.

If you are confident in your mechanical abilities and have a clear understanding of the compatibility requirements, the Wiseco 4012P6 piston kit could be a valuable investment for your engine build. However, if you are unsure of your mechanical skills or have concerns about the cost or compatibility, it may be advisable to consult a professional before making a purchase.

Details:

Diamond turned finish from one of the many CNC computer controlled turning centers guarantees you a perfect with no size variation. All Wiseco Pistons are forged from high silicon, low expansion aluminum which offers superior strength, reduced weight, improved heat transfer, and longer life. 1249cc, Domed, Standard Bore 3.494in. Wiseco, Piston Kit 74ci.

Compression: 9:1 Compression, Sold as: Each. Any damage claims may be exchanged for the identical item only. Sizing: Sizing Not Available, Bore: 3.494in.

part #: 4012p6 prices

• $156.99-$340.99

specifications pistondon:

• brand: Wiseco
• mpn: 4012p6
• part type: Piston Compression
• make: Harley

offer pistondon:

• options: Ship-to-home
• sold: 0
• started: November 30, 2025
• quantity: 9
• availability: In Stock

seller pistondon:

• rating: 99.4%
• # reviews: 601810
• city: Loudon, Tennessee

returns pistondon:

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

payments pistondon:

• wallet: Apple-pay
• other
• credit card: Diners-club

shipping pistondon:

• class: Economy, Standard, Expedited
• transit: 4-10 Days
• type: Fixed
• service: Economy, Standard, Expedited
• cost: $0.00

general pistondon:

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

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