Brian Crower Subaru EJ257 STI Stroker Kit - 83mm Billet Crank/I Beam Rods (5.141in) Custom Pistons

This is the Brian Crower EJ257 STI Stroker Kit, specifically built for the 2004-2014 Subaru Impreza and the 2015-2017 Subaru WRX STI. If you're looking to significantly increase the displacement and power potential of your EJ257 engine, this kit is a solid foundation. It's designed to take your engine beyond its stock 2.5-liter capacity, allowing for more cubic inches and the ability to generate more horsepower and torque.

At the heart of this kit is an 83mm billet crankshaft. Billet construction means it's machined from a solid block of steel, making it incredibly strong and resistant to flexing under high loads – crucial for a stroker setup. This increased stroke, combined with the included I-beam connecting rods and custom pistons, bumps the engine's displacement. The I-beam rods are well-built for handling the increased stress, and the custom pistons are designed to work with the new stroke and your specific build goals, whether that's for track use or serious street performance. This kit is a major step up for anyone serious about building a high-performance EJ257 engine.

When undertaking a stroker build like this, it's important to have all the necessary supporting components ready. This includes machine work for the block to accommodate the larger displacement, as well as ensuring your fuel system, cooling system, and engine management are up to the task of handling the increased power. This kit is a substantial upgrade, and proper installation and supporting modifications are key to unlocking its full potential and ensuring long-term reliability.