Not too big, not too small and now with ball bearing! ITS JUST RIGHT for YOUR SPEED. Capable of built block power and extremely fast spool times, this turbo can make 500+whp and hit 20psi by 3400-3500rpm. The CorkSport CST5 turbo can be tuned for a more laid-back curve that is stock block safe or pushed to 30+psi for built blocks and auxiliary fueling. No matter what build you have this turbo will be sure to impress.

• The CST5 features a MHI Ball Bearing CHRA, 0.82 Turbine A/R and 4” Anti-Surge Compressor Cover
• The CST5 turbo will be available in two boost control setups: Internally Wastegated (IWG) & 44mm Externally Wastegated (EWG) w/included EWG elbow pipe & V-band clamp.
• Includes a FREE CorkSport 3.5 bar MAP sensor for accurate boost pressure up to 37psi.

Balanced Performance

The CorkSport CST5 is designed with the ideal balance in response and power for the daily-driven Mazdaspeed. Now available with a ball bearing CHRA for improved response and durability at high boost levels. Just between the CST4 and CST6, the CST5 can reach ~20psi by 3400-3500rpm and carry power to 7300-7500rpm.

Stock Flange Fitment

Ease of installation and use is key to all CorkSport Performance Turbochargers. The CST5 retains the factory-style turbine flanges for a painless installation.

The turbine housing is designed with a 0.82 A/R to balance response and top-end power.

Anti-Surge Compressor

4” anti-surge ported compressor housing is utilized for peak performance operation. The anti-surge porting increase the compressor map width paired with an industry standard 4” inlet to maximize the use of 3.5” and 4” intake system.

High Performance CHRA

MHI Ball bearing CHRA housing is used for the CST5 turbocharger for its increased cooling capacity and proven reliability.

High-performance ceramic ball bearing cartridge is used for improved response and high boost durability vs the standard journal bearing.

Comparing the compressor and turbine wheels, we have a wheel size ratio of 1:15

Billet Compressor

Utilizing the Gen1 GTX71 billet compressor wheel, the CST5 can efficiently support 56 lbs/min flowrate and boost pressures over 30psi.

High Flow Turbine

Paired with the compressor wheel is an MHI TF06 high-flow turbine wheel. This wheel uses a 9-blade design which reduces overall rotating mass and thus improves response and spool.

Tunable Wastegate Actuator

The Internal Wastegate Actuator uses a larger diaphragm and piston for improved boost control for the larger CST5.

Also included is an assortment of springs so you can specifically setup you CST5 for your Mazdaspeed.

All Hardware Included

The CST5 comes will all the necessary hardware for installation saving you time and money on gaskets, studs, and the specialty parts.

Choose Your Boost Control

Do you want an easy-to-use Internal Wastegate setup or an External Wastegate setup and screamer pipe? You decide with the CST5!
Internal Wastegate setup includes the 0.82 A/R IWG turbine housing and tunable IWG Actuator.
External Wastegate setup includes the 0.82 A/R EWG turbine housing and V-Band Clamp & Elbow designed for 44mm EWGs. (EWG and Screamer Pipe Not Included) Don’t worry, if you want to change your setup later you can!

• • Compatible with: 2006-2013 DISI MZR found in the Mazdaspeed 3,Mazdaspeed 6, & CX-7
  • Designed in America: Designed in Vancouver, Washington, in the Pacific Northwest.
  • CorkSport Service & Support: 1-year limited warranty, full-color installation instructions, all necessary components, and knowledgeable telephone support at (360) 260-2675.