Wiseco Performance Pistons

In Stock

Wiseco
Ring, Shelf Stock 97.5mm Bore 1.2 x 1.5 x 2.0mm Ring - Single Ring

Only 9 left

$2899
In Stock

Wiseco
Sport Compact Series Pistons | Multiple B16/B20 Acura/Honda Fitments | K567M

Only 3 left

$83199

Pay over time · Est. $26.00/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
In Stock

Wiseco
Piston Ring Shelf Stock 83.00MM - Single Ring | 8300XX

Only 5 left

$3399
Wiseco
Ring, Shelf Stock 97.0mm Bore 1.2x1.5x3.0mm Ring - Single Ring

$2899
In Stock

Wiseco
Sport Compact Series 84.0-86.0mm Bore | Multiple Honda/Acura B16/B18 Fitments | K594M84AP

Only 5 left

$83199

Pay over time · Est. $26.00/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
In Stock

Wiseco
Sport Compact -2.3cc Pistons | Honda/Acura B Series | K623M

Only 1 left

$65699

Pay over time · Est. $20.53/payment

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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Wiseco
Ring, Shelf Stock 93.0mm Ring - Single Ring w/ tabbed oil

$3699
In Stock

Wiseco
BoostLine Connecting Rod Kit | Honda K20C Engines | HN5658-866

Only 7 left

From $79999

Pay over time · Est. $25.00/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
In Stock

Wiseco
Sport Compact -6cc Pistons
Fits: 89-95 Toyota Celica/MR2 3SGTE

Only 17 left

$82799

Pay over time · Est. $25.87/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Wiseco
Sport Compact Series Pistons
Fits: 93-99 2nd Gen DSM Eclipse/Talon

$86399

Pay over time · Est. $27.00/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
In Stock

Wiseco
Sport Compact -14.8cc Pistons
Fits: 93-98 Toyota Supra 2JZGTE

Only 12 left

$1,15699

Pay over time · Est. $36.16/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Wiseco
Forged Piston Set | Multiple Fitments | K637M73

$77199

Pay over time · Est. $24.12/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Wiseco
Sport Compact Series 1.181X87.5MM Flat Top Piston | Acura/Honda K20 K24 | K631M875

$65699

Pay over time · Est. $20.53/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Wiseco
Sport Compact -17cc Pistons | Mitsubishi 6-Bolt 4G63 | K559M

From $73299

Pay over time · Est. $22.91/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Wiseco
BoostLine Connecting Rod - Single
Fits: 08-15 Mitsubishi Evo X 4B11T

From $27499

Pay over time · Est. $8.59/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Wiseco
Pistons 86.0mm Bore 9.2:1 CR
Fits: 03-06 Mitsubishi Lancer Evolution 8/9

$95899

Pay over time · Est. $29.97/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

The best forged pistons for a high-boost Subaru WRX or STI build are Wiseco Sport Compact pistons, paired with Wiseco BoostLine connecting rods and matching rings. Wiseco forged pistons handle the cylinder pressures of a big-turbo EJ or FA engine far better than stock cast pistons, making them the go-to choice for engines built to make serious power reliably. They are built for popular platforms like the 2006–2014 WRX, 2004–2020 STI, and Mazdaspeed3/6.

When an engine gets a bigger turbo, boost rises and stock pistons become the weak link — ring lands crack and power goals stall. Forged pistons from Wiseco use stronger 2618-series aluminum that survives detonation and heat better than cast or hypereutectic stock pistons, and they come in standard and oversize bores so a machine shop can match them to a fresh hone. Shop by bore size, compression ratio, and dish volume to match your fuel and boost target, and remember that pistons, rods, and bearings should be planned as one package with your machine work.

Compare options across our JE Pistons, CP Pistons, and connecting rods collections, including fellow forged internals brands Carrillo and Manley Performance. Standout parts include the Wiseco Sport Compact pistons for EJ255/257, the 100mm bore piston set for 2006–2014 WRX and 2004–2020 STI, and the Wiseco BoostLine rod for EJ20/EJ25 turbo engines. For background on part quality, read our FAQ on aftermarket part durability.

Are forged pistons better than cast pistons?

For boosted builds, yes. Forged pistons are stronger and more resistant to detonation and heat than cast pistons, which is why they are standard in high-power turbo engine builds.

Do I need a tune with forged pistons?

Yes. Any engine rebuild with forged internals changes compression and clearances, so the car must be tuned by a professional before it is driven hard.

How do I pick the right bore size?

Choose the bore to match your cylinder condition and machine work — your machine shop measures the bores after honing and tells you which oversize to order. When in doubt, wait for their measurement before buying.

Can I install pistons myself?

Piston installation is an engine-out rebuild job requiring machine work, special tools, and precise clearances. Most owners have a performance machine shop handle the short block.