JE Pistons Subaru EJ25 Ultra Series 99.50mm Bore Dia -16.5cc 8.5:1 - Piston Set fits_2011-2012`Ram`3500`SLT~2011-2012`Ram`3500`ST This system uses patented tuning

This system uses patented tuning to deliver more air volume for noticeable horsepower and torque gains plus sharper throttle response

Mandrel bending ensures a smooth interior path for unrestricted flow and reduced backpressure

3L platforms with full emissions compliance

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Black Housing Smoke Lens: Durable ABS construction with smoked polycarbonate lenses resists cracking yellowing for lasting sleek appearance

JE Pistons Subaru EJ25 Ultra Series 99.50mm Bore Dia -16.5cc 8.5:1 - Piston Set fits_2011-2012`Ram`3500`SLT~2011-2012`Ram`3500`ST This system uses patented tuningJE Pistons Ultra Series pistons for sport compact and euro applications combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. Premium, gas nitrided carbon steel rings are included.