Mahle MS Piston Set for Audi S4 2.7L – 81.50mm Bore, 86.4mm Stroke, 154mm Rod, 21mm Pin, 9.0 Compression Ratio

Description

The Mahle MS Piston Set designed for the Audi S4 2.7L engine provides reliable performance and durability for high-performance applications. Each piston features a bore diameter of 81.50mm, with an 86.4mm stroke and 154mm connecting rod length, ensuring proper fit and optimal engine function. The set includes six pistons crafted with advanced coatings such as phosphate, Grafal, and a hard anodized top ring groove, which contribute to enhanced wear resistance and reduced friction for improved engine longevity. The pistons are engineered with a compression ratio of 9.0, suitable for a balance of power and efficiency. Weighing approximately 295 grams each, these components are designed to meet the demanding requirements of performance engines while maintaining weight control for smooth operation. The pistons are compatible with the specific needs of the Audi S4 2.7L engine, including applications that require a 21mm wrist pin. These pistons are not carb-legal but are acknowledged for use in engines where carb compliance is not mandated. The set is suitable for air freight shipping and adheres to Prop 65 regulations, ensuring safety and compliance for automotive use. Crafted by Mahle, a trusted leader in engine components, these pistons are a critical upgrade for enthusiasts seeking to enhance engine performance, durability, and efficiency in their Audi S4. Proper installation and use are essential to maximize the benefits of these high-quality pistons, making them an excellent choice for engine rebuilds, performance upgrades, or restoration projects.

Features:

• Bore diameter of 81.50mm for precise engine fit

• 86.4mm stroke designed for optimal power output

• 154mm connecting rod length for balanced engine dynamics

• 21mm wrist pin for secure piston assembly

• Coatings: Phosphate, Grafal, and Hard Anodized top ring groove for wear resistance

• Compression Ratio: 9.0 for a balance of power and efficiency

• Lightweight design at approximately 295 grams each for smooth operation

• Engineered specifically for the Audi S4 2.7L engine application

• Constructed by Mahle with high-quality materials for durability

• Not CARB approved but suitable for non-compliant engine builds