Mahle MS Chevrolet LS 417cid 4.075in Bore 4.000 Stroke 6.125 Rod -5.8cc 11.1 CR Pistons - Set of 8

If you're building a high-performance Chevrolet LS engine and need a robust piston set for a 417 cubic inch displacement, this Mahle MS series set is a solid choice. These pistons are designed for a 4.075-inch bore and a 4.000-inch stroke, working with a 6.125-inch connecting rod. The -5.8cc valve reliefs are designed to provide proper clearance for your camshaft lobes, and the 11.1:1 compression ratio is ideal for naturally aspirated or forced induction applications seeking a balance of power and pump gas compatibility.

Mahle uses 4032 aluminum alloy for these pistons, which offers a good blend of strength and thermal expansion characteristics suitable for performance builds. Each piston weighs in at 430 grams, contributing to a balanced rotating assembly. The 0.927-inch wrist pin diameter is standard for many LS applications, making integration into your build straightforward. This set includes eight pistons, enough for a complete V8 engine.

Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always refer to your engine builder's specifications and the manufacturer's installation instructions for proper assembly and tuning to achieve the best results from your new engine build.