Skip to product information
1 of 1

AMS Performance

AMS EJ25 Intake Manifold 2004-2021 Subaru STI

AMS EJ25 Intake Manifold 2004-2021 Subaru STI

Regular price $1,299.95 USD
Regular price Sale price $1,299.95 USD
Sale Sold out

Fitment Information:

  • 2002-2014 Subaru WRX 
  • 2004-2021 Subaru STI

Please note:

  • Will fit 02-05 WRX with EJ20 only with adapter to use WRX style drive by cable throttle body
  • 08-14 WRX with EJ25 requires using STI-style drive by wire throttle body
  • 08-21 STI may require mild clearancing of A/C compressor line


Stay Ahead Of Your Competition with the AMS Performance Subaru EJ25 Intake Manifold!

The AMS Subaru Intake Manifold was designed to outperform the competition. We referenced many modern design examples and engineering studies to bring you the best intake manifold available for the Subaru EJ20 and EJ25 WRX & STI. After extensive testing we ended up with a manifold that makes more power than anything else currently available on the market!

  • Uncoated
  • Standard Rotation Configuration
  • 4.5 Liter Plenum Volume
  • 13" Equal Length Intake Runners (Measured from Face of Bellhorn to End of Runner)
  • 2.5" (63.5mm) Intake Runner Diameter (ID of Bellhorn)
  • Bellhorn OD 3.8" (96.7mm)
  • Increased Port Size at Cylinder Heads Allow Matching to Larger Hand Ported or CNC
  • Throttle Body Opening Accepts Larger Throttle Bodies up to 2.625” (66.675mm) or 70mm with mild porting.

Off-Road Use Policy

By purchasing this product, you are acknowledging the use of this service is explicity for Competition/Off - Road Racing ONLY. It is the responsbility of the buyer to remain compliant with local, state & federal laws regarding EPA restrictions.

View full details