Pistons and Rings
Bore size, compression ratio and the power you're after all decide which piston goes in your block, and getting that call right matters more than the brand name. Here are the forged piston sets and kits we can get for you, sorted by make and engine.
These aren't in the online store yet. Call or message us to order.
Find parts for your vehicle
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Subaru
EJ257 (WRX STI) / EJ255
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Manley piston set with rings, EJ257 (WRX STI), 8.5:1 dish: Piston set with rings. 8.5:1 dish. Fits Subaru EJ257 (WRX STI). Also fits EJ255. Bore options: 99.5mm, standard stroke, 2004-and-up WRX STI (612000C-4); 99.55mm, standard stroke, 2004-and-up WRX STI (612001C-4); 99.75mm, standard stroke, 2004-and-up WRX STI (612002C-4); 100mm, standard stroke, 2004-and-up WRX STI (612005C-4); 100.25mm (612007C-4). -
Manley piston set with rings, EJ257 (WRX STI), 9.8:1 dish: Piston set with rings. Standard stroke, 9.8:1 dish. Fits 2004-and-up WRX STI EJ257. Also fits EJ255. Bore options: 99.5mm (612100C-4), 99.75mm (612102C-4), 100mm (612105C-4). -
JE Pistons piston kit, EJ257 (WRX STI), 8.5 compression ratio: Piston kit, set of 4. 8.5 compression ratio. Fits WRX STI EJ257. Also fits EJ255. Bore options: 99.5mm (291061), 100mm (291062). -
Wiseco Professional piston kit, EJ257 (WRX/STI), -19cc dish: Professional piston kit. 4-valve, -19cc dish. Fits EJ257 WRX/STI. Also fits EJ255. Bore options: 99.5mm (K598M995), 99.55mm (K598M9955), 99.75mm (K598M9975), 100mm (K598M100).
EJ205 / EJ20 (WRX)
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Manley piston set with rings, EJ205 (WRX), 8.5:1 dish: Piston set with rings. Standard stroke, 8.5:1 dish. Fits 1998-and-up WRX EJ205. Bore options: 92mm (615000C-4), 92.5mm (615005C-4), 93mm (615010C-4). -
JE Pistons piston kit, EJ205 (WRX), 8.5 compression ratio: Piston kit, set of 4. 8.5 compression ratio. Fits WRX EJ205. Bore options: 92mm (314437), 92.5mm (314438), 93mm (314439). -
Wiseco Professional piston kit, EJ20 (WRX), R/Dome, 8.4:1 compression ratio: Professional piston kit. 4-valve, R/Dome, 8.4:1 compression ratio. Fits Subaru EJ20 (WRX). Bore options: 92mm (K588M92), 92.5mm (K588M925), 93mm (K588M93).
Porsche
Need pistons for your Porsche? We order custom pistons built to your spec. Call ASF Machine at 970-242-0919 to order.
BMW
S52 (S52B32, US)
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Wiseco Professional piston set, BMW S52B32 3.2L, -18.5cc dish: Professional piston set, set of 6. -18.5cc dish, 31mm compression height, 22mm pin. Fits BMW S52B32 3.2L. Bore options: 86.5mm (K763M865), 87mm (K763M87). - Wiseco Professional piston set, BMW S52B32 3.2L, -2.7cc: Professional piston set, set of 6. -2.7cc, 31mm compression height, 22mm pin. Fits BMW S52B32 3.2L. Bore options: 86.5mm (K764M865), 87mm (K764M87).
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JE Pistons piston kit, BMW S52B32 US, 9:1 compression ratio: Piston kit, set of 6. 2618 forged, inverted dome/dish, 1.220 in. compression height, 0.866 in. pin. 9:1 compression ratio. Fits BMW S52B32 US. Bore options: 86.5mm (3.4055 in.) (297170), 87mm (3.425 in.) (297171). -
JE Pistons piston kit, BMW S52B32 US, 11.5 compression ratio: Piston kit, set of 6. 2618 forged, inverted dome/dish, 1.220 in. compression height, 0.866 in. pin. 11.5:1 compression ratio. Fits BMW S52B32 US. Bore options: 86.5mm (3.4055 in.) (297172), 87mm (3.425 in.) (297173). -
JE Pistons piston kit, BMW S52B32 US, 12.5 compression ratio: Piston kit, set of 6. 2618 forged, inverted dome/dish, 1.220 in. compression height, 0.866 in. pin. 12.5:1 compression ratio. Fits BMW S52B32 US. Bore options: 86.5mm (3.4055 in.) (297174), 87mm (3.425 in.) (297175).
To order, or to ask whether a part fits your engine, call us at 970-242-0919 or use the contact form on our Engine Parts page.