Description
Enhance your Subaru 2.5L engine performance with the Mahle MS piston set, designed specifically for optimal fit and function. Each piston features a bore diameter of 99.75mm, ensuring precise compatibility with your engine’s specifications. The pistons have a stroke length of 79mm and a connecting rod length of 130.4mm, providing an ideal balance for power and efficiency. The set includes four pistons, each equipped with a 23mm pin and a compression ratio of approximately 8.5:1, making it suitable for various performance applications.
Constructed from high-quality materials, these pistons are coated with phosphate and Grafal for enhanced durability and corrosion resistance. The design incorporates a combustion chamber volume of approximately -19.3cc, contributing to the specified compression ratio. Weighing around 13.8 ounces (401 grams) per piston, they are engineered for reliable operation under demanding conditions.
The Mahle MS pistons are engineered to meet the strict standards required for Subaru engines, providing excellent sealing, wear resistance, and thermal stability. These pistons are not CARB-approved but are compatible with most performance upgrades, offering a robust solution for engine rebuilds and enhancements. They are shipped via air freight and are suitable for automotive applications, with Prop 65 compliance ensuring safety and environmental standards are met. Designed for professional installation, this piston set offers a dependable upgrade for Subaru enthusiasts seeking improved engine longevity and performance.
Features:
- Bore diameter: 99.75mm for precise engine fit
- Stroke length: 79mm to optimize power output
- Connecting rod length: 130.4mm for balanced motion
- Pin diameter: 23mm for secure piston connection
- Compression ratio: approximately 8.5:1 for efficiency
- Coatings: Phosphate and Grafal for corrosion and wear resistance
- Combustion chamber volume: -19.3cc for desired compression
- Material: High-quality construction for durability
- Weight: Around 13.8 ounces (401 grams) per piston
- Designed for Subaru 2.5L engines, Part Number 930285027
- Not CARB-approved but compliant with Prop 65 standards
- Includes set of four pistons for complete engine rebuild












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