Collection: For WRX STi 98-20 3" Inlet Cover

Kinugawa 3" Inlet Turbo Upgrades for Subaru WRX & STI (1998–2020)

Ready to break past your stock turbo's ceiling? These are 3" compressor inlet upgrades for Subaru WRX and STI — replacing OEM units (TD04L, IHI VF30, VF35, VF39, VF43, VF48) across journal bearing and ball bearing configurations. Fits 2002–2014 WRX, 2004–2020 WRX STI (EJ257), and 2004–2007 Forester XT. Note: 3" inlet requires intake pipe modification — not a direct bolt-on.

⭐ Best Sellers — Start Here

• ⭐ Anti-Surge TD05H-20G (Journal Bearing) — #1 best seller. Strong low-to-mid response. Best for: street/track stage 2–3 builds.
• ⭐ TD06H-25G (Ball Bearing) — #2 best seller. 500–600whp, mid-to-high range power. Best for: built motors targeting 500whp+.
• ⭐ Anti-Surge TD05H-18G (Journal Bearing) — #3 best seller. Quick spool, crisp throttle response. Best for: daily-driven builds prioritizing response.
• ⭐ TF06-18K (Ball Bearing) — #4 best seller. Billet 7+7 point-milled wheel, 54 lb/min, 500+whp. Best for: high-efficiency builds wanting BB precision.

Not Sure Which to Choose?

🔧 Journal Bearing vs. Ball Bearing: Journal bearing turbos offer excellent value for street builds. Ball bearing turbos spool faster and handle sustained high-boost track use better.
📊 Anti-Surge vs. Non Anti-Surge housing: Anti-surge compressor housings prevent compressor surge at partial throttle — recommended for street and mixed-use builds.
📧 Need a recommendation? Contact us with your power target, fuel, and engine spec — we'll match you to the right turbo.