Mach V Subaru STi Brembo Caliper Replacement Piston Kits 2018-2021 STI

After hard use or age, your STi Brembo brake calipers might need some attention. Pistons can get gummed up and grit and dirt can end up inside the works. Sometimes the pistons get so badly scored they just need to be replaced.

Fix your caliper up with the help of our aftermarket replacement piston kits. Each kit gives you all six pistons you need to fix ONE caliper. If you need to repair both front calipers, get TWO kits.

Sorry, at this time we don’t offer replacement pistons for the matching rear calipers.

Our replacement caliper pistons are CNC-machined from super-strong T6061 aluminum, to exactly match the size of the OEM Brembo pistons.

Want more details on how to? Click here!

Note that dust boots and piston seals are NOT included in this kit, but they are available to purchase separately here.

Use caution when handling any caliper pistons; you want to take particular care not to damage the outer barrel.

Fits all 2018-2021 Subaru WRX STI, and other cars equipped with six-piston front STI Brembo brakes (including 2024+ WRX TR).