Part Number: K598M995AP

Bore Size: 99.50mm

Compression Ratio: 8.9:1

Fitment: 15-21 Subaru STI

Notes: Not for sale in California not CARB Legal

Details:

This is a great option for those of you who are performing an engine rebuild and need a set of pistons that are designed to sustain the perils of high horsepower and high boost.

Here are the details:

• 99.5mm Bore

• 8.9:1 Compression ratio

• Dedicated 2618 alloy forgings

• Includes Nitrided/Napier steel rings

• Includes offset wrist pins

• Skirt coatings

• Complex dish and dome designs

• Special skirt profiles