fits model: Wrx, Sti. make: Subaru. year: 1979.

( Brand: Manley Performance ), ( Manufacturer Part Number: 612207C-4 ), ( Part Type: Piston ), ( Fitment Type: Performance/custom )
The 612207c-4 Manley Pistons Subaru WRX STI EJ257 17cc Dish 100.25mm 79 Stroker Performance Piston is a high-performance upgrade for your Subaru WRX STI engine. This piston kit is designed specifically for the EJ257 engine, providing an increased displacement of 17cc and a compression ratio of 10.0:1.
The pistons feature a 100.25mm bore diameter, which is compatible with the standard WRX STI cylinder block. The 17cc dish design provides additional combustion volume, enabling the engine to produce more power and torque. The 79 stroker design increases the engine's stroke length, further enhancing its power output and providing a more balanced and responsive power delivery.
The Manley Pistons are made from forged 2618 aluminum alloy, ensuring superior strength and durability. The pistons are also coated with a nickel-silicon-carbide (NiSiC) coating, which provides excellent heat resistance and reduces friction, resulting in improved engine efficiency and longevity.
The piston tops are equipped with Manley's high-performance VR rings, which offer superior sealing and wear resistance. The pistons also feature Manley's patented oil control grooves, which help to prevent oil sludge build-up and ensure proper oil flow in the piston skirt.
Overall, the 612207c-4 Manley Pistons Subaru WRX STI EJ257 17cc Dish 100.25mm 79 Stroker Performance Piston kit is an excellent choice for any Subaru WRX STI owner looking to increase their engine's power output and improve its overall performance. With its high-quality materials, advanced design, and proven track record, this piston kit is sure to provide years of reliable and high-performance driving.
Pros of purchasing a Manley 612207C-4 pistons for Subaru WRX STI EJ257:1. High-quality material: Manley pistons are made from forged 2618 alloy, ensuring durability and reliability.
2. Enhanced performance: The pistons have a 17cc dish and a 100.25mm diameter, providing increased combustion chamber volume, which can help improve power and torque.
3. Improved piston-to-wall clearance: The 79mm stroke is longer than the stock 76mm stroke, which can help decrease piston-to-wall contact, reducing the risk of detonation and engine damage.
4. Designed for high-performance applications: The Manley pistons are designed for high-horsepower and high-rpm applications, making them a good choice for those looking to upgrade their WRX STI's engine.
Cons of purchasing a Manley 612207C-4 pistons for Subaru WRX STI EJ257:1. Cost: Manley pistons are generally more expensive than stock pistons, which can be a deterrent for some.
2. Requires additional modifications: Installing these pistons may require additional modifications to the engine, such as upgraded rods, rings, and cylinder heads, to ensure proper fit and performance.
3. Potential for increased engine noise: Due to their high-performance design, these pistons may contribute to increased engine noise, which some may find bothersome.
Conclusion:The Manley 612207C-4 pistons offer several benefits for those looking to upgrade their Subaru WRX STI EJ257 engine, including improved performance, durability, and piston-to-wall clearance. However, their high cost and potential need for additional modifications should be considered before making a purchase. If you have the budget and are willing to make the necessary modifications, these pistons can help you achieve greater power and reliability from your engine.
Recommendation:If you're seriously considering upgrading your WRX STI's engine and have the budget to do so, the Manley 612207C-4 pistons can be a worthwhile investment. However, do your research and consult with a knowledgeable mechanic to ensure that these pistons are the right fit for your specific engine and driving needs.
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Perfect ring groove to skirt squareness is achieved through our unique one texturing manufacturing method that assures maximum horsepower.
Manley pistons for Subaru Wrx Sti EJ257 17cc dish 100. Each design is lightweight yet robust enough to deliver long service life.
Offset wrist pin design is utilized for quiet start-ups.
Purchase from map to receive aggressive pricing and retain your manufacturers warranty.
25mm bore 79 stroker Manley pistons are machined of high strength 2618 material.