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

( Brand: Manley Performance ), ( Manufacturer Part Number: 612201C-4 ), ( Part Type: Piston ), ( Fitment Type: Performance/custom )
The 612201c-4 Manley Pistons are a high-performance upgrade for Subaru WRX STI EJ257 engines, specifically designed for those seeking enhanced power and durability. These pistons feature a 17cc dish and a 99.55mm bore diameter, making them suitable for a 79mm stroke application.
Manley is renowned for its precision-engineered pistons, and this set is no exception. Each piston is manufactured using top-quality 2618 alloy, ensuring superior strength and heat resistance. The crowns are honed to a mirror finish, ensuring optimal combustion efficiency and reducing the risk of detonation.
The pistons also feature Manley's patented fully floating wrist pin design, which reduces side-load stress and minimizes the risk of pin failure. The skirt design is optimized for low friction, reducing power-robbing engine drag.
Furthermore, these pistons come with Manley's patented oil control ring, which helps to reduce blowby and control oil consumption, resulting in cleaner combustion and improved engine efficiency.
In summary, the 61201c-4 Manley Pistons are a high-quality, performance-enhancing upgrade for Subaru WRX STI EJ257 engines. They offer improved strength, durability, and combustion efficiency, making them an excellent choice for those looking to maximize their engine's potential.
Pros of Buying Manley Pistons Subaru WRX STI EJ257:1. High-quality Material: Manley pistons are made from forged 2618 alloy, which is known for its strength and durability. This material can withstand high cylinder pressures, making it suitable for high-performance applications.
2. Enhanced Performance: These pistons have a 17cc dish and 99.55mm compression height, which can help increase engine power and torque. The 79mm stroke also provides better combustion and more efficient use of fuel.
3. Improved Engine Life: Manley pistons are designed to reduce friction and heat, which can help extend the life of your engine. They also have a high-strength ring pack that can resist distortion and maintain seal integrity.
4. Precision Manufacturing: Manley pistons are manufactured with strict tolerances and high precision, ensuring a perfect fit in your engine. This can help prevent issues like oil leaks and piston slap.
Cons of Buying Manley Pistons Subaru WRX STI EJ257:1. High Cost: Manley pistons are more expensive than OEM (Original Equipment Manufacturer) pistons. This high cost might be a deterrent for some buyers.
2. Requires Skilled Installation: Installing high-performance pistons like these requires specialized tools and skills. If not installed correctly, it could lead to engine damage.
3. Potential for Noise: Due to the increased performance, these pistons might cause more engine noise compared to OEM pistons.
Conclusion:If you're looking to significantly improve the performance of your Subaru WRX STI EJ257 engine, Manley pistons could be a great choice. They are made from high-quality materials, can withstand high cylinder pressures, and can help extend the life of your engine. However, their high cost and the need for skilled installation are important considerations. If you're not ready to make this investment or don't have the necessary skills for installation, it might be better to stick with OEM pistons.
Recommendation:If you're serious about improving the performance of your Subaru WRX STI EJ257 engine and have the necessary skills and budget, Manley pistons could be a worthwhile investment. However, it's always a good idea to consult with a professional mechanic or engine builder before making any major engine modifications. They can provide advice based on your specific needs and circumstances.
Manley pistons for Subaru Wrx Sti EJ257 17cc dish 99.
Offset wrist pin design is utilized for quiet start-ups. Perfect ring groove to skirt squareness is achieved through our unique one texturing manufacturing method that assures maximum horsepower.
Each design is lightweight yet robust enough to deliver long service life. Please see the for information regarding shipping costs and available methods.
Purchase from map to receive aggressive pricing and retain your manufacturers warranty. 55mm bore 79 stroker Manley pistons are machined of high strength 2618 material.