Mahle MS Piston Set SBF 408ci 4.030in Bore 4.000in Stroke 6.2in Rod .927 Pin -20cc 10.1 CR Set of 8

When you're building a serious Ford Small Block engine, especially a 408 cubic inch stroker, the pistons are a critical component. What you're getting here is a complete set of eight Mahle MS pistons, designed to handle the demands of a performance build. These pistons feature a 4.030-inch bore and are designed to work with a 4.000-inch stroke crankshaft and a 6.200-inch connecting rod, giving you that 408ci displacement. The included .927-inch pin is a standard size for many performance applications.

Mahle uses a 4032 aluminum alloy for these pistons, which is a well-known material for its strength and durability in performance engines. This alloy offers a good balance of expansion characteristics and toughness, making it suitable for engines that see regular use and higher cylinder pressures. The -20cc dish volume combined with the other engine dimensions results in a 10.1 compression ratio, which is a popular target for naturally aspirated or forced induction builds seeking improved power output without being excessively high for pump gas in many setups. Each piston weighs in at 418 grams, which is a reasonable weight for a forged piston of this size and intended application.

It's important to note that these pistons are not CARB approved and cannot be shipped to California. If you're building a high-performance Ford Small Block, this set from Mahle offers a solid foundation with well-regarded materials and a compression ratio that's a common choice for enthusiasts looking to extract more power from their engine.