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Cosworth Forged Piston Set 99.5mm 9.2:1 CR Subaru Turbo 2.5L (inc. 2006-2014 WRX / 2004-2015 STI)

In Stock
Price: $867.00

Available Options

* Add Piston Rings::


Cosworth Forged Piston Set 99.5mm 9.2:1 CR Subaru Turbo 2.5L (inc. 2006-2014 WRX / 2004-2015 STI)

The piston is one of the most important components within an engine. It can be subjected to directional change up to 285 times every second and must withstand acceleration forces up to 8500g. Cosworth high performance forged pistons are designed and engineered to withstand this type of punishment and still perform. All Cosworth forged pistons are manufactured using the same methods as their Formula One pistons and feature friction reducing skirt coating, ultra strong pins, polished tops and patented anti-detonation bands. Additionally, each application uses a unique forging to minimize weight and ensure the strongest possible piston design.

Proprietary Cosworth alloy
Popular sizes
Unique forging
Skirt coating
Polished top
Anti-detonation bands
High strength pin

Includes: Pistons, Wrist Pins, Circlips

Ring kit 20001515 Sold Separately and required for installation.

Make Model Years
Subaru Baja 2004 - 2006
Subaru Forester XT 2004 - 2013
Subaru Legacy GT 2005 - 2012
Subaru Outback 2005 - 2009
Subaru STi 2004 - 2015
Subaru WRX 2006 - 2014

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Brand: Cosworth
Model 20004531
Mfgr. Warranty: No Warranty
Machining Required: No
Quantity: 4
Size: OEM Spec
Bore Size: 99.5mm
Compression Ratio: 9.2:1
Anti-Friction Coating: Yes
Head Alternation Required: No
Piston Material: Forged
Piston Rings Included: No
Wrist Pin Clips: Yes
Wrist Pins Included: Yes
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