EJ20 / EJ25

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX STi EJ257 83mm Stroker 99.5mm STD -26.0cc 8.1:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 83mm Stroker 99.5mm STD -26.0cc 8.1:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX STi EJ257 100mm +0.5mm -4.5cc 10.0:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 100mm +0.5mm -4.5cc 10.0:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX STi EJ257 99.75mm +0.25mm -4.5cc 10.0:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 99.75mm +0.25mm -4.5cc 10.0:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX STi EJ257 99.5mm STD -4.5cc 9.9:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 99.5mm STD -4.5cc 9.9:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX STi EJ257 100.5mm +1.0mm -12.0cc 9.2:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 100.5mm +1.0mm -12.0cc 9.2:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX STi EJ257 100mm +0.5mm -12.0cc 9.1:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 100mm +0.5mm -12.0cc 9.1:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX STi EJ257 99.75mm +0.25mm -12.0cc 9.1:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 99.75mm +0.25mm -12.0cc 9.1:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX STi EJ257 99.5mm STD -12.0cc 9.0:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 99.5mm STD -12.0cc 9.0:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX STi EJ257 100.5mm +1.0mm -22.0cc 8.3:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 100.5mm +1.0mm -22.0cc 8.3:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX STi EJ257 100mm +0.5mm -22.0cc 8.2:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 100mm +0.5mm -22.0cc 8.2:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX EJ255 99.75mm +0.25mm -22.0cc 8.7:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 99.75mm +0.25mm -22.0cc 8.1:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX STi EJ257 99.5mm STD -22.0cc 8.1:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 99.5mm STD -22.0cc 8.1:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX EJ255 100.5mm +1.0mm -24.0cc 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX EJ255 100.5mm +1.0mm -24.0cc 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX EJ255 100mm +0.5mm -24.0cc 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX EJ255 100mm +0.5mm -24.0cc 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX EJ255 99.75mm +0.25mm -24.0cc 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX EJ255 99.75mm +0.25mm -24.0cc 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru WRX EJ255 99.5mm STD -24.0cc 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru WRX EJ255 99.5mm STD -24.0cc 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru Impreza WRX EJ205 79mm Stroker 93mm +1.0mm -15.5cc 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru Impreza WRX EJ205 79mm Stroker 92.5mm +0.5mm 8.4:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru Impreza WRX EJ205 79mm Stroker 92.5mm +0.5mm -15.5cc 8.4:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru Impreza WRX EJ205 79mm Stroker 93mm +1.0mm 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru Impreza WRX EJ205 79mm Stroker 92mm STD -15.5cc 8.3:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru Impreza WRX EJ205 93mm +1.0mm -12.0cc 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru Impreza WRX EJ205 93mm +1.0mm -12.0cc 8.5:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru Impreza WRX EJ205 92.5mm +0.5mm -12.0cc 8.4:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru Impreza WRX EJ205 9Diamond Racing Forged Pistons Set Subaru Impreza WRX EJ205 92.5mm +0.5mm -12.0cc 8.4:12mm STD -12.0cc 8.3:1

Diamond Pistons

Diamond Racing Forged Pistons Set HD Pin Subaru Impreza WRX EJ205 92mm STD -12.0cc 8.3:1

Diamond Pistons

Diamond Racing Forged Pistons Set Subaru Impreza WRX EJ205 92mm STD -12.0cc 8.3:1

FERREA

Ferrea Intake Valve Stem Seals Set of 8 Subaru WRX EJ205 STi EJ257

FERREA

Ferrea Exhaust Valve Stem Seals Set of 8 Subaru WRX EJ205 STi EJ257

FERREA

Ferrea Intake Valve Guides Set of 8 O/S Subaru WRX EJ205 STi EJ257

FERREA

Ferrea Exhaust Valve Guides Set of 8 STD Subaru WRX EJ205 EJ255 STi EJ257

FERREA

Ferrea Exhaust Valve Guides Set of 8 O/S Subaru WRX EJ205 STi EJ257

FERREA

Ferrea 80lbs Dual Valve Springs & Ti Retainers Set of 16 Subaru WRX STi EJ257

FERREA

Ferrea Titanium Retainers Set of 16 Subaru WRX EJ20 STI - 2004-2008