The ProSport Unequal Length Header + Uppipe for 2002–2022 Subaru WRX/STI combines high-performance exhaust flow, race-grade materials, and the unmistakable Subaru sound. It’s a must-have upgrade for enthusiasts who want stronger throttle response, quicker turbo spool, and aggressive boxer tone in a durable, track-ready package.
Features:
T304 Stainless Steel Construction: Full stainless build for high heat resistance, rust protection, and long-term durability.
45mm Piping with 3-Bolt Flange: Large internal diameter maximizes flow and supports faster turbo spool-up with a secure fit.
Hand TIG-Welded Craftsmanship: Built with precision for a smooth, high-quality finish that resists cracking under pressure.
Benefits:
Gain in Horsepower & Torque: Expect dyno-proven increases in both power and low-end torque—improving acceleration and responsiveness.
Signature Boxer Rumble: The unequal length layout preserves the legendary Subaru exhaust note—deep, throaty, and raw.
Wide Fitment Range: Compatible with 2002–2022 WRX and STI models, making it a versatile bolt-on for multiple generations.