Twin-Scroll Turbo Kit

The Full-Race FR-TK-STI-T4TS is a twin-scroll turbo kit engineered for Subaru WRX and STI models equipped with EJ20 and EJ25 engines. This kit aims to deliver optimal performance by providing instant throttle response, early spool, and substantial top-end power. The kit features a fully TIG-welded, thick-wall construction using stainless steel runners, ensuring it can withstand severe high-boost conditions without cracking or leaking. This design focuses on utilizing ideal cylinder pairing and the proper implementation of twin-scroll technology to generate a broad, torque-friendly power band with a large area under the curve. Included in the kit are the Full-Race Subaru WRX/STI Lower Manifold, T4 Twin Scroll Up-Pipe, and T4 Twin Scroll Downpipe, along with all necessary fittings, lines, and hardware. Optional components like Tial Wastegate and BOV are available, as is a choice of turbochargers from brands like Garrett, Borg Warner, and Precision. This turbo kit is compatible with a range of Subaru models, including the WRX (2002-2005 2.0L Turbo, 2006-2009 2.5L Turbo, 2011-2014 2.5L Turbo, 2015-2020 2.0L Turbo) and WRX STi (2004-2020 2.5L Turbo), as well as the Legacy GT (2005-2012 2.5L Turbo). It is also noted to fit Right-Hand Drive (RHD) cars. Customers have inquired about fitment with aftermarket oil pans, and Brewed Motorsports states they have header options and turbo kit configurations to work with larger capacity oil pans like the Killer B and AIG, advising direct contact for specific setup. It is important to note that the Full Race turbo kit is discontinued and has been replaced by the ETS STI turbo kit. However, this kit remains a viable option for high-end STI builds seeking significant power potential. Professional installation and tuning are recommended for optimal performance.