PRO X 01.4355.B Piston 4-STROKE

( Brand: Pro X ), ( Manufacturer Part Number: 01.4355.B ), ( Type: Piston ), ( Machine Type: Off-road Motorcycle )

Review PRO X 4-stroke Piston Stock Bore

The Pro 01.4355.B 4-Stroke Piston is an essential component for any small engine, delivering reliable and efficient performance. This piston is meticulously engineered for use in 4-stroke engines, which are known for their superior fuel efficiency and reduced emissions compared to 2-stroke engines.

The Pro 01.4355.B piston boasts a sleek, lightweight design, with a forged aluminum construction that ensures durability and longevity. Its compact dimensions allow for optimal combustion efficiency, while its precise machining ensures a snug fit within the engine cylinder.

This piston features a state-of-the-art skirt design, which minimizes friction and wear, leading to extended engine life. The piston crown is optimally designed for efficient combustion, with a honed shape and a polished surface that ensures even heat distribution and maximum power output.

The Pro 01.4355.B piston is also designed with safety in mind. It comes with a ring package that includes a compression ring, an oil control ring, and a skirt oil scraper ring. These rings help maintain proper engine compression and prevent oil leakage, ensuring optimal engine performance and prolonging the life of the engine.

The piston's precision-machined piston pin bore ensures a secure fit for the piston pin, which is a critical component for the proper functioning of the engine. This piston pin bore is also designed to minimize friction, reducing wear and tear on the engine components.

The Pro 01.4355.B 4-Stroke Piston is the ideal choice for small engine owners who demand reliable, high-performance components. Its advanced design, superior materials, and meticulous manufacturing process make it a top choice for those who demand the best from their engines. Whether you're powering a go-kart, a lawn mower, or any other small engine application, this piston will deliver the power, efficiency, and longevity you need to get the job done right.

1. Durability: A 4-stroke piston is known for its durability due to its design, which includes an overhead camshaft and four strokes or cycles for each power stroke. This results in fewer moving parts and less wear and tear compared to a 2-stroke piston.

2. Better Fuel Efficiency: The 4-stroke piston engine is more fuel-efficient than a 2-stroke engine due to its four-stroke cycle design, which allows for a more complete combustion process and less fuel waste.

3. Improved Emissions: The 4-stroke piston engine produces fewer emissions than a 2-stroke engine, making it a better choice for those concerned about the environment.

4. Quieter Operation: The 4-stroke piston engine operates more quietly than a 2-stroke engine due to its design, which reduces the noise generated during operation.

5. Better Performance: The 4-stroke piston engine delivers better performance, including increased power and torque, due to its more efficient combustion process and improved design.

1. Higher Cost: The 4-stroke piston engine is generally more expensive to purchase and maintain than a 2-stroke engine due to its more complex design and higher manufacturing costs.

2. More Complex Design: The 4-stroke piston engine has a more complex design than a 2-stroke engine, which can make it more difficult to repair and maintain, especially for those without mechanical expertise.

3. Heavier Weight: The 4-stroke piston engine is heavier than a 2-stroke engine due to its more complex design and additional parts, which can make it more difficult to transport and install.

The decision to buy a 01.4355.B 4-stroke piston engine depends on your specific needs, budget, and level of mechanical expertise. If you prioritize durability, fuel efficiency, improved emissions, quieter operation, and better performance, then the 4-stroke piston engine is the better choice for you. However, if you are working with a limited budget or are not mechanically inclined, the higher cost, more complex design, and heavier weight of the 4-stroke piston engine may be a deterrent. Ultimately, it is important to weigh the pros and cons carefully and consult with a qualified mechanic or engine supplier to determine which engine is the best fit for your needs.

Based on the information provided, I would recommend the 01.4355.B 4-stroke piston engine for those who prioritize durability, fuel efficiency, improved emissions, quieter operation, and better performance, and have the budget and mechanical expertise to maintain and install the engine. For those with limited budgets or mechanical expertise, a 2-stroke piston engine may be a more practical and affordable option. It is always a good idea to consult with a qualified mechanic or engine supplier to determine which engine is the best fit for your specific needs and circumstances.

Details:

Proxy Piston Kits are a first class solution to replace the original piston in your machine. Proxy has developed a new skirt coating that not only assists the wear-in Process, but also helps reducing friction after. Proxy pistons are precision machined on the latest, state of art CNC equipment. The black coating is made from a delicate mix of materials and will increase performance.

Pro X 4-Stroke Piston - Stock Bore / B 01.4355.B: Important note: This piston is for a stock sized bore. Tin-coated pistons assist the wear-in Process as when you first started bike. Most but NOT all Proxy pistons come with a coating. Cast piston puts engine back to standard specs without boring or replacing cylinder.

The same low-expansion, low-friction piston alloy is used as for all major Japanese and European engine manufacturers.

part #: 014355b prices

• $129.99-$629.99

specifications pistondon:

• brand: Pro X
• mpn: 01.4355.b
• type: Piston
• machine type: Off-road Motorcycle

seller pistondon:

• # reviews: 46683
• rating: 99.8%
• city: Christiansburg, Virginia

offer pistondon:

• options: Ship-to-home
• quantity: 2
• sold: 0
• availability: In Stock
• started: March 18, 2026

shipping pistondon:

• transit: 9-15 Days
• class: Standard
• cost: $0.00
• type: Fixed
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery, Standard

general pistondon:

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

payments pistondon:

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

returns pistondon:

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

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