JE Pistons Mitsubishi 4B11T 89mm Bore -2.1cc Dome Piston Set of 4

Forged from 2618 aluminum, these JE Pistons are built to handle the demands of high-performance 4B11T engines. The 89mm bore size and -2.1cc inverted dome dish are specific to this application, aiming for an optimized compression ratio that works well with forced induction setups. JE Pistons brings over 75 years of experience to the table, with these pistons being engineered, forged, and machined entirely in the USA.

JE Pistons utilizes a proprietary Forged Side Relief (FSR) forging design. This design helps reduce skirt width, which in turn minimizes friction and saves weight. Depending on the specific application, these pistons may also feature an accumulator groove to help manage combustion gas pressure, reducing ring flutter and improving ring seal for more consistent power delivery. Some applications also include a skirt coating to further reduce friction and wear on the piston skirts and cylinder walls, which can also lead to quieter operation.

When you order this set, you're getting a complete kit designed for a direct fit. It includes four pistons, high-quality wrist pins, locks, and JE Pro Seal premium piston rings. These are a solid option if you're rebuilding the top end of your 4B11T engine and need pistons that can stand up to serious use.