Butler Performance Inc. - Rotating Assemblies & Stroker Kits

The rotating assembly, or stroker kit, is the heart of a high performance engine. Butler uses only high quality crankshafts, rods, and pistons in their rotating assemblies as well as stock's many assemblies from brands such as Eagle, Scat, Callies, and more. These assemblies can be purchased factory balanced or Butler can put them through it's internal balancing process. Click here to read more about the "Butler Process" all kits go through before being shipped to you or your builder.