PRO-X 4072 Kuryakyn Piston Kit Big 01.1075.050 0.50MM 47.50MM

( Brand: Pro-x ), ( Manufacturer Part Number: 4072 ), ( Part Type: Piston )

Review PRO X Kuryakyn Piston Kit Big Bore 0.50mm Oversize To 47.50mm

Introducing the Kuryakyn Pro-X 4072 Piston Kit, a high-performance upgrade for Harley-Davidson V-Twin engines. This piston kit, specifically designed for big twin engines with a stroke length of 4.75 inches and a 0.50mm piston pin diameter (part number 01.1075.050), is engineered to deliver exceptional power and durability.

The Pro-X 4072 pistons are crafted from forged aluminum alloy, ensuring superior strength and reliability. Each piston undergoes a rigorous manufacturing process that includes precision machining and meticulous inspection to ensure a perfect fit and optimal engine performance.

These pistons boast a 0.030-inch overbore design, which increases the engine's displacement and, consequently, its power output. The piston tops are finished with a polished, chrome-plated surface that not only adds a touch of elegance to your engine but also provides enhanced cooling capabilities.

The Pro-X 4072 piston kit includes new piston pins and piston rings, ensuring a complete and comprehensive engine upgrade. The piston pins are made of high-strength, chrome molybdenum steel, providing unparalleled durability and resistance to bending or breaking. The piston rings are precision-engineered to ensure a proper seal between the piston and cylinder wall, reducing compression losses and improving overall engine efficiency.

By installing the Kuryakyn Pro-X 4072 piston kit in your Harley-Davidson engine, you'll experience increased horsepower and torque, enhanced engine responsiveness, and improved engine longevity. This piston kit is an excellent choice for riders seeking a powerful and reliable engine upgrade for their V-Twin motorcycle.

In summary, the Kuryakyn Pro-X 4072 piston kit (part number 01.1075.050) is a high-performance, forged aluminum piston upgrade designed for big twin Harley-Davidson engines with a stroke length of 4.75 inches and a 0.50mm piston pin diameter. This piston kit includes new pistons, piston pins, and piston rings, and its 0.030-inch overbore design increases engine displacement and power output. By installing this piston kit, you'll experience improved engine performance, enhanced durability, and increased horsepower and torque.

Pros and Cons of Buying Kuryakyn 01.1075.050 Piston Kit (Pro-X 4072) for Big Engines: A Detailed Analysis

The Kuryakyn Pro-X 4072 piston kit (01.1075.050) is a popular aftermarket option for upgrading the performance of big engines. This piston kit comes with a 0.50mm displacement increase and a 47.50mm bore size. In this analysis, we will discuss the pros and cons of purchasing this piston kit to help you make an informed decision.

1. Enhanced Performance: The primary reason for buying this piston kit is to improve the engine's performance. The increased displacement and bore size allow for better combustion and increased power output.

2. High-Quality Materials: Kuryakyn is known for using high-quality materials in their aftermarket parts. The piston kit is made from forged aluminum alloy pistons, ensuring durability and reliability.

3. Precision Machining: The pistons are precision-machined to ensure a perfect fit in the engine cylinder. This results in minimal clearance, reducing the chances of engine knocking and other related issues.

4. Improved Compatibility: This piston kit is compatible with a wide range of big engines, making it a versatile option for various applications.

1. Cost: The Kuryakyn Pro-X 4072 piston kit is a premium aftermarket option, and its cost may be a significant barrier for some buyers.

2. Installation Complexity: Installing the piston kit requires a high level of expertise and experience. It is recommended to have the kit installed by a professional mechanic to avoid any complications.

3. Engine Tuning: To fully realize the performance benefits of the piston kit, engine tuning may be required. This can add to the overall cost and complexity of the project.

4. Potential Increased Noise: With increased performance comes the potential for increased noise. Some buyers may find the noise level unacceptable and may require additional sound deadening measures.

The Kuryakyn Pro-X 4072 piston kit (01.1075.050) is an excellent option for those looking to enhance the performance of their big engines. Its high-quality materials, precision machining, and compatibility with various engines make it a versatile and reliable choice. However, the cost, installation complexity, and potential need for engine tuning may be considerations for some buyers. Ultimately, the decision to purchase this piston kit depends on your specific requirements, budget, and expertise.

If you are confident in your mechanical abilities, have the necessary budget, and are looking for a significant performance boost, the Kuryakyn Pro-X 4072 piston kit is an excellent choice. Alternatively, if cost is a significant concern or if you are unsure of your mechanical abilities, it may be worth considering other aftermarket performance options or seeking professional advice.

Details:

Brand: Pro-X, model Number: 4072. I need to exchange an item. This is helpful if you are buying multiple items. Parts without fitment are to be assumed universal and may require vehicle modification.

Kuryakyn 01.1075.050 Piston Kit Big Bore - 0.50mm Oversize to 47.50mm: Save money over oem pricing. Piston kit comes complete with piston rings pin and end clips. Bearings and seals are also oem quality.

part #: 4072 prices

• $69.99-$70.16

specifications pistondon:

• brand: Pro-x
• mpn: 4072
• part type: Piston

seller pistondon:

• # reviews: 69452
• city: Sparks, NV
• rating: 99.7%

shipping pistondon:

• cost: $0.00
• service: Standard
• class: Standard
• transit: 4-6 Days
• type: Fixed

payments pistondon:

• wallet: Google-pay
• other
• credit card: Mastercard

general pistondon:

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

offer pistondon:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 3
• started: November 7, 2025

returns pistondon:

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

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