Regular Price: $414.99 - Instant discount: $62.25 = $352.74
Product Fitment:
2004-2021 Subaru STI
Increase airflow and power without compromising drivability. The IAG Big Bore 76mm Throttle Body Upgrade Kit is a plug‑and‑play solution that replaces restrictive OEM units with a larger, OEM‑quality throttle body and precision adapter plate—ideal for Subaru builds targeting 600+ HP.
Features:
76 mm bore—nearly 25% larger than stock throttle body
Supports big turbo setups and FMIC configurations
Maintains smooth idle and throttle response
Direct bolt-on kit: swap OEM throttle body for IAG adapter and 76 mm unit
No springs, complex disassembly, or wiring modifications
OEM connector remains plug‑and‑play (MAP sensor relocation may be required)
CNC-machined from 6061 aluminum with O‑ring sealing
Optional finishes: black anodized or natural silver
Works seamlessly with STI, Cosworth, AMS intake manifolds
Includes 76 mm Big Bore Throttle Body, adapter plate, O‑rings, screws
All necessary hardware for full installation in one box
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