Mahle MS Piston Subaru 2.5L 99.75mm Bore 79mm Stroke 130.4mm Rod 23mm Pin -22cc 8.5 CR - Single

Crafted from 4032 aluminum, this Mahle MS piston is built for Subaru 2.5L engines, specifically those found in the WRX STI, Forester, and Legacy models. It features a 99.75mm bore and a 79mm stroke, with a 130.4mm connecting rod length and a 23mm wrist pin diameter. The piston dish volume is -22cc, which helps achieve an 8.5:1 compression ratio, making it a solid choice for rebuilding or upgrading your engine's top end.

This single piston weighs in at 401 grams and has a compression height of 30.7mm. The 4032 aluminum alloy is known for its strength and durability, offering good resistance to thermal expansion, which is crucial for high-performance applications. This piston is designed as a direct replacement or upgrade component for your Subaru's engine.

Please note that this piston is not CARB approved and cannot be shipped to California. Always refer to your vehicle's service manual or a professional mechanic for specific installation procedures and torque specifications.