Wiseco Piston Set 99.5mm Bore WRX 2006-2014 / STI 2004-2021 Subaru Turbo Models | K598M995AP Vehicle Model_STI The Short Ram SP Series

The Short Ram SP Series is a traditional

54mm Turbine Wheel

Manual Paddle Valves & 200 PSI Dual Needle Gauge

The installation instructions below will show which parts to use based on which type of car you have

Wiseco Piston Set 99.5mm Bore WRX 2006-2014 / STI 2004-2021 Subaru Turbo Models | K598M995AP Vehicle Model_STI The Short Ram SP SeriesDedicated 2618 alloy forgings, offset wrist pins, Nitrided Napier Steel rings, skirt coatings, complex dish and dome designs, special skirt profiles, and other features insure longevity and power with boosted and nitrous engines. Specs: 8. 9: 1 Compression Ratio 99. 5mm Bore Includes: Wrist Pins, Piston, and Rings.