JE Pistons Subaru EJ25 Ultra Series 99.50mm Bore Dia -16.5cc 8.5:1 - Piston Set 1979-mazda-rx-7-esi6918590 The byproduct of a true

The byproduct of a true performance-designed intake is more than power

The front inlet connects to the grill and receives a constant supply of ram air

reducing exhaust pressure and improving driving performance

This cover snaps onto the air intake housing with magnets making for a hassle-free installation

JE Pistons Subaru EJ25 Ultra Series 99.50mm Bore Dia -16.5cc 8.5:1 - Piston Set 1979-mazda-rx-7-esi6918590 The byproduct of a trueUltra Series forged pistons from JE are the industry? s strongest, most fully featured pistons available off the shelf. Offered for a wide range of import and sport compact applications from 2JZ to 4G63 and Audi to BMW, Ultra Series pistons feature JE? s proprietary Aligned Grain Flow forging technology providing next level tensile strength ideal for the extreme cylinder pressures of power adder engine builds. Equipped with custom level features