AKSGKGQ PISTON0287 Top Flat Piston Engines 730704604357 90MM .660 420CC

( Brand: Aksgkgq ), ( Manufacturer Part Number: PISTON0287 ), ( Part Type: Piston Engine ), ( Included Components: Piston, Pin ), ( Material: Metal ), ( UPC: 730704604357 ), ( Package Dimensions Lxwxh: 3.82x3.66x3.58 Inches ), ( Weight: 0.93 Pounds )

Review AKSGKGQ 90mm Flat Top Piston .660 For 420cc And Most Engines fits HEMI PREDATOR 660 390

Introducing the AKSGKG Q 730704604357 90mm Flat Top Piston, specifically designed for use in 420cc Hemi Predator 390 engines. This high-performance piston is engineered to deliver superior power and reliability for off-road and powersports applications.

The flat top piston design provides an optimal compression height for increased power output. The piston is constructed from forged aluminum alloy, ensuring strength and durability for demanding use. It features a compressive coating on the skirt to reduce friction and improve ring seal, resulting in better engine efficiency and longer piston life.

The piston pin is made of chrome molybdenum steel, offering superior strength and resistance to fatigue. The piston ring set includes a compression ring, oil control ring, and two piston rings, all made from high-quality materials for optimal sealing and performance.

This piston kit also includes a piston pin retainer with a unique design that helps prevent piston pin damage during engine operation. It is precision machined to ensure a perfect fit in the engine and features a hardened steel retaining pin for added durability.

The AKSGKG Q 730704604357 90mm Flat Top Piston is compatible with 420cc Hemi Predator 390 engines and is designed to provide excellent power and reliability for off-road and powersports applications. With its forged aluminum alloy construction, compressive coating, high-strength piston pin, and durable piston pin retainer, this piston kit is an excellent choice for those seeking maximum performance and longevity from their engine.

Pros and Cons of Buying AKSGKG Q 730704604357 90mm Flat Top Piston for 420cc Hemi Predator 390 Engines

The AKSGKG Q 730704604357 90mm Flat Top Piston is a popular upgrade for the 420cc Hemi Predator 390 engines. This piston offers several benefits, but like any purchase, it comes with its pros and cons. In this article, we will discuss the advantages and disadvantages of buying this piston for your engine.

1. Increased Power: One of the primary reasons people buy this piston is for the increased power it provides. The 90mm size allows for more fuel and air to be burned, resulting in more horsepower and torque.

2. Durability: The flat top design of this piston is known for its durability. The piston crown is larger and flatter, reducing the chances of detonation and increasing the engine's lifespan.

3. Improved Compression: The larger piston size also results in improved compression, which can lead to better fuel efficiency and more power.

4. Enhanced Performance: The AKSGKG Q 730704604357 piston is designed to work with high-performance engines, making it an ideal choice for those looking to get the most out of their 420cc Hemi Predator 390 engine.

1. Cost: The AKSGKG Q 730704604357 piston is more expensive than the stock piston that comes with the engine. The cost of the upgrade may be a deterrent for some buyers.

2. Installation: Installing the new piston requires disassembling the engine, which can be a time-consuming and complex process. It is recommended to have the installation done by a professional to ensure it is done correctly.

3. Weight: The larger piston size and materials used in the construction of the AKSGKG Q 730704604357 piston result in added weight. While this may not be a concern for some applications, it can impact the engine's response and performance in others.

The AKSGKG Q 730704604357 90mm Flat Top Piston offers several advantages for those looking to upgrade their 420cc Hemi Predator 390 engine. These advantages include increased power, durability, improved compression, and enhanced performance. However, the piston also comes with some disadvantages, such as a higher cost, complex installation process, and added weight. Ultimately, the decision to purchase this piston depends on your goals for your engine, your budget, and your willingness to invest the time and resources into the installation process.

If you are looking for maximum power and durability from your 420cc Hemi Predator 390 engine, the AKSGKG Q 730704604357 90mm Flat Top Piston is an excellent choice. However, if you are on a tight budget or are not willing to invest the time and resources into the installation process, you may want to consider other options. It is always recommended to consult with a professional mechanic or engine builder before making any major engine upgrades.

Details:

90mm Piston.660, Flat Top for 420cc Hemi Predators,fit Most 390 Engines: Aftermarket Piston Predators.Will fit most engines. Valve reliefs for Hems.slight bevel, Piston measures.660 from top of piston to wrist pin, 407cc using Stock Crank, 433 with .160 Striker Cranks, 440cc .200 Crank.

specifications pistondon:

• for models: 660, 390, Hemi, Predator
• brand: Aksgkgq
• mpn: Piston0287
• part type: Piston Engine
• included components: Piston, Pin
• material: Metal
• upc: 730704604357
• package dimensions lxwxh: 3.82x3.66x3.58 Inches
• weight: 0.93 Pounds

seller pistondon:

• city: Phoenix, AZ
• # reviews: 76325
• rating: 99.5%

returns pistondon:

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

offer pistondon:

• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: March 31, 2026
• sold: 0

payments pistondon:

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

shipping pistondon:

• type: Fixed
• cost: $0.00
• service: Expedited
• class: Expedited
• transit: 3-8 Days

general pistondon:

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