Subaru EJ20 / EJ25 – IE450R – 5249 – Bolt-On Turbo
 
Fast spool. OEM-like response. Proven performance.
 
The Ichiban Engineering IE450R 5249 Bolt-On Turbo was developed for Subaru owners looking to unlock significantly more power while retaining the fast response and drivability of the factory turbocharger.
 
Featuring a modern 52mm billet compressor wheel paired with a high-performance dual ceramic ball bearing CHRA, the IE450R delivers exceptional spool characteristics, strong mid-range power, and reliable top-end airflow — making it the perfect upgrade for responsive street cars and fast road builds.
 
Flowing approximately 45LB/min, the IE450R is capable of producing 400WHP+ with the proper supporting modifications while maintaining excellent boost response and daily drivability.
Unlike oversized turbo setups that sacrifice low-end performance, the IE450R was engineered to preserve the sharp transient response Subaru EJ platforms are known for while dramatically increasing overall airflow capability.
 
Designed as a true bolt-on solution, the turbo is compatible with both EJ20 and EJ25 engines found in 2002–2007 WRX and 2002–2020 STI models.
 
Every turbocharger includes our upgraded billet wastegate assembly as standard, improving boost control consistency and reliability under elevated boost pressure.
 
Each unit is assembled using brand-new components and precision-balanced to exact tolerances for stable operation and long-term reliability.
 
Key Features
• 52mm Billet Compressor Wheel
Modern billet aero design for improved airflow and rapid boost response.
• Dual Ceramic Ball Bearing CHRA
Provides faster spool and reduced friction compared to conventional journal bearing turbos.
• Supports 400WHP+
Flows approximately 45LB/min while maintaining excellent street manners.
• OEM-Style Bolt-On Fitment
Designed specifically for Subaru EJ20 and EJ25 applications.
• Billet Wastegate Included Standard
Supplied with upgraded billet wastegate and spring kit.
• Complete Installation Kit Included
Includes oil lines, coolant lines, oil restrictor, gaskets, and required fittings.
• Balanced CHRA Assembly
Precision-balanced rotating assembly for reliability at high boost and shaft speeds.
• 1 Year Unlimited Warranty
Turbocharger and included components backed by Ichiban Engineering warranty coverage.
 
Built for drivers who demand response without compromise.

The Ichiban Engineering IE450R 5249 Turbo combines modern billet turbo technology with OEM-style fitment to deliver reliable, responsive performance for the Subaru EJ platform.
 
⚙️ Fits Subaru EJ20 and EJ25 engines
⚙️ Compatible with 2002–2007 WRX and 2002–2020 STI models
📧 For technical questions or custom setups contact sales@ichiban.engineering