10 Piston dynamics and selection are very important to amassing a stroker kit. Make sure your stroker kit makes sense. A cast-steel crank makes sense when you fit it with I-beam rods and either cast or hypereutectic pistons. Forged pistons offer durability, but are not always a quiet operation due to expansion properties. This Probe Industries forged piston with a low-friction coating from MCE Engines in Los Angeles can be fitted to a budget or high-end engine.