DRAG SPECIALTIES DS-750739 Piston Evolution

( Brand: Drag Specialties ), ( Manufacturer Part Number: DS-750739 ), ( Part Type: Piston ), ( Bore Oversize: Standard ), ( Bore Size: 3.498 ), ( Compression Ratio: 8.5 ), ( Piston Material: Aluminum ), ( Stroke Length: 4-1/4 ), ( Units: Kit ), ( Category 1: Cylinders / Heads ), ( Category 2: Top End Kits / Pistons / Rings ), ( Average Delivery Time: 2-3 Days ), ( Package Weight: 2.6300 ), ( Package Length: 8.00 ), ( Manufacturer Warranty: 90 Days )

Review DRAG SPECIALTIES Piston Fits H d Evolution

The DS-750739 Piston from H-D Evolution is a high-performance aftermarket replacement for Harley-Davidson V-Twin engines. This piston is specifically designed for Harley-Davidson Touring models, including Electra Glide, Road Glide, Street Glide, and Road King.

The DS-750739 piston is manufactured using a forged alloy steel construction. This design provides superior strength and durability compared to cast pistons, ensuring reliable performance even under heavy loads and high RPMs. The forged construction also allows for a more uniform material distribution, reducing the likelihood of piston failure due to thermal stress or fatigue.

This piston features a dish diameter of 4.125 inches and a compression height of 1.092 inches. It is designed to work with a connecting rod length of 3.600 inches and a wrist pin diameter of 0.584 inches. The piston crown is machined with a domed shape to promote efficient combustion and improve engine power output.

The DS-750739 piston is also designed with a fully floating wrist pin. This feature allows the pin to float within the piston pin bore, reducing friction and wear on the wrist pin and crankshaft. The piston skirt is also designed with a generous oil squirter bore, ensuring adequate lubrication for the piston and reducing the risk of piston-to-cylinder scuffing.

This piston is designed for use with high-performance engines and is suitable for use with aftermarket camshafts, intake manifolds, and exhaust systems. It is recommended for use with premium fuel to ensure optimal engine performance.

The DS-750739 piston is also engineered to meet or exceed OEM specifications for fit, function, and performance. It is backed by a one-year warranty against manufacturing defects, providing peace of mind for Harley-Davidson enthusiasts seeking to enhance the performance of their V-Twin engine.

In summary, the DS-750739 piston from H-D Evolution is a high-strength, high-performance aftermarket replacement piston designed specifically for Harley-Davidson Touring models. Its forged alloy steel construction, domed piston crown, fully floating wrist pin, and generous oil squirter bore make it an excellent choice for Harley-Davidson enthusiasts seeking to improve their engine's power output and reliability.

The DS-750739 Piston H-D Evolution produced by S&S Cycles is a performance aftermarket part designed to enhance the power and efficiency of Harley-Davidson engines. Here are some pros and cons of buying this product based on customer reviews and industry expert opinions:

1. Increased Power: The DS-750739 piston kit is known for delivering significant horsepower gains, making it an attractive option for riders looking to boost their engine's performance.

2. Improved Compression Ratio: The pistons in this kit offer a higher compression ratio, which results in more efficient combustion and increased power output.

3. Enhanced Durability: The DS-750739 pistons are manufactured using high-quality materials and advanced manufacturing techniques, ensuring long-lasting performance and durability.

4. Customizable: The kit offers various options for customizing the pistons to different engine sizes and applications, making it a versatile choice for Harley-Davidson owners.

5. Easy Installation: Customers have reported that the installation process is relatively straightforward, with many completing the job in their own garages.

1. Expensive: The DS-750739 piston kit is a premium aftermarket product, and its price tag may be a deterrent for some riders.

2. Requires Professional Installation: While some customers have successfully installed the kit themselves, it is recommended that a professional mechanic handles the installation to ensure proper fitment and function.

3. May Void Warranty: Installing aftermarket parts like the DS-750739 piston kit may void the original manufacturer's warranty on the engine.

4. Potential Noise Increase: Some customers have reported that the piston kit results in increased engine noise, which may not be desirable for all riders.

The DS-750739 Piston H-D Evolution by S&S Cycles is a high-performance aftermarket product that offers significant power gains and improved efficiency for Harley-Davidson engines. However, its premium price, potential installation complexities, and potential warranty concerns are important considerations for potential buyers. Ultimately, the decision to purchase this product depends on an individual's priorities, budget, and riding preferences.

If you are a serious Harley-Davidson enthusiast looking for a significant power boost and are willing to invest in a premium aftermarket product, the DS-750739 piston kit is an excellent choice. However, if you are on a tighter budget or prefer a more straightforward upgrade, there may be other aftermarket parts or modifications that better suit your needs. It's always recommended to consult with a professional mechanic before making any significant engine modifications to ensure the best possible outcome.

Details:

Kits include two pistons, wrist pins and clips. Item Specifics. PART TYPE Other. Drag Specialties Piston fits H-D Evolution DS-750739:: Replacement Piston OEM quality cast aluminum alloy construction.

Accept OEM or Hastings rings order separately. Ideal for OEM replacement. Some fitments feature pistons with a coating that extends piston life, reduces friction and allows for cooler running engines. 100% satisfaction guaranteed.

Combined shipping available. STROKE length 4-1/4. PISTON MATERIAL Aluminum. MANUFACTURER PART Numbers-750739.

Economical with great performance, all in one package.

part #: ds750739 price

• $117.61

specifications pistondon:

• brand: Drag Specialties
• mpn: Ds-750739
• part type: Piston
• bore oversize: Standard
• bore size: 3.498
• compression ratio: 8.5
• piston material: Aluminum
• stroke length: 4-1/4
• units: Kit
• category 1: Cylinders / Heads
• category 2: Top End Kits / Pistons / Rings
• average delivery time: 2-3 Days
• package weight: 2.6300
• package length: 8.00
• manufacturer warranty: 90 Days

shipping pistondon:

• service: FedEx Ground / FedEx Home Delivery, FedEx 2Day, FedEx Standard Overnight
• transit: 2-5 Days
• carrier: FedEx
• type: Calculated
• class: Standard, Expedited, One-day
• cost: $0.00

payments pistondon:

• wallet: Apple-pay
• credit card: Visa
• other

returns pistondon:

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

seller pistondon:

• # reviews: 489465
• city: Hilliard, Ohio
• rating: 99.3%

offer pistondon:

• started: November 3, 2025
• availability: In Stock
• quantity: 6
• options: Ship-to-home
• sold: 0

general pistondon:

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

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