BLOX Racing’s Big Tube turbo manifold is available for Subaru Impreza WRX FA20DIT.  This high performance replacement features larger tubing than all other competing brands in the market.

The FA20DIT Big Tube Manifold features 45mm piping from start to end and 11mm thick flanges.  The ports have also been opened up to 41mm at the head flanges and 36mm at the turbo flange.  In addition to the “big tube” manifold primaries, the larger port diameters allow for greater flow and power production from the OE turbo or similar size aftermarket unit.

Manifolds are constructed from Schedule 40 T304 stainless steel and TIG-welded.  The Big Tube Manifold retains the OE original equal-length (EL) design, fitment and turbo placement.



  • T304 stainless steel; Schedule 40
  • Mandrel-bent tubing; TIG-welded
  • 4-2, equal-length design
  • 45mm piping
  • 41mm head flange ports
  • 36mm turbo flange ports
  • 11mm thick flanges
  • Direct replacement for OE manifold
  • Reuses OE or similar aftermarket turbo


Coming soon for 2015+ Subaru WRX!

BLOX Racing’s exhaust system is manufactured using complete T304 stainless steel, including the exhaust flanges. The mandrel-bent piping measures 3″ from the cat-back and is TIG-welded to maximize quality and to ensure reliability and durabilty. BLOX Racing’s system features dual, high-flow mufflers to maximize power and torque.

Contact your your local retailer or call BLOX Racing at 510.440.1605 for more information.


BLOX Racing is pleased to announce its new line of adjustable rear LCAs for Subaru. BLOX Racing’s rear LCAs feature multiple mounting locations for the rear knuckle, shock and sway bar end link. The design also allows for more rear camber adjustment for vehicles that have been lowered beyond that factory’s adjustment range and capabilities.

Rear lower control arms, which are manufactured from high quality steel, will come available in powder coated black, blue and red. Limited edition, special release finishes will soon follow after.

Applications Include:

  • 2013+ Scion FR-S
  • 2013+ Subaru BRZ
  • 2010-2014 Subaru Legacy Outback 3.6L AWD
  • 2010-2014 Subaru Legacy Sedan B4
  • 2010-2014 Subaru Legacy Outback 2.5L Turbo AWD
  • 2011+ Subaru Impreza XV Crosstrek
  • 2008-2014 Subaru Impreza WRX
  • 2008-2014 Subaru WRX STi Hatchback
  • 2008-2014 Subaru WRX STi Sedan

Other performance products for the WRX that will be introduced soon will include a full T304 cat-back exhaust system and front and rear AL6061 upper strut tower bars.



BLOX Racing is pleased to add more MLS gaskets. These stainless steel gaskets are now available for the following applications. As with all BLOX Racing MLS gaskets, these are made out of stainless steel, feature Fire Rings and are reusable.

  • EJ20/EJ25 Cylinder head to turbo manifold
  • EJ20/EJ25 Exhaust manifold to up pipe
  • EJ20/EJ25 Up pipe to turbo
  • EJ20/EJ25 Turbo to down pipe
  • FA20DIT Exhaust manifold to turbo
  • FA20DIT Turbo to down pipe