Subaru WRX STi Radiator Hose Upgrade

Want to dress up that engine compartment a little more, color match our new radiator hose to your to your engine compartment and silicone couplers! Includes two pieces of our Treadstone upper and lower radiator hose. Made from thick 3 ply reinforced silicone. Features a slick glossy surface that is easy to keep clean and looks great! Fits 02-07 WRX and Sti

Subaru WRX STi Rotated Mount Turbo Upgrade Kit

Our STi kit has been re-released and upgrade from its origional version! Turbo bracket has been reinforced, our oil catch can relocated, and flex joints put in to prevent cracks! Precision billet turbochargers are now also available! This is a 100% complete kit, and includes all hardware needed for installation. All of our turbocharging compliment the best in performance turbocharging today! Turbonetics Turbochargers, the pioneer in performance turbocharging! With the knowledge and experience of one of the best names in turbocharging, Treadstone products parallels with quality and reliability, giving you the best products combination in performance turbocharging. With a no hassle one year warranty that cant be beat!

We are passionate about Subaru performance, and we stopped at nothing to make this one of the best kits available to the enthusiast. With many different turbo options, from standard bearing, to ceramic ball bearing, to the GTK turbocharger, performance options are endless whether your tuning for street, track or strip

Subaru WRX Sti Rotated Turbo Cold Air Intake Kit

Our cold air intake kit for the rotated mount turbo kit is available in 4 color options. Suby blue, murdered out black, blood red and polished. Features a 3" aluminum mandrel bend for smooth air flow into the turbo. Precision welded MAF adapter engineered to perform, and placed downward of 6" of straight tubing for laminar flow through sensor. No erratic idling, or faulty readings, we tested and tuned this intake to run perfect. Includes a large 8" long K&N air filter for the least restricted air flow into the turbo.

Subaru WRX STi Front Mount Intercooler Kit

The bomb has landed and the news is out, we have blew the competition away with this one. The latest release to the Treadstone line up is our massive front mount intercooler kit available for the WRX STi. We have raised the bar in front mount intercoolers for your WRX with a massive 4.5" deep core, 28" long and 10.5" high making this the new benchmark intercooler! Capable of flowing 938cfm at 1.5psi pressure loss, this unit is efficient up to 900hp without breaking a sweat!

NGK Iridium IX Spark Plugs Subaru STI 2.5L 04+

These plugs are a must when running more than 20psi of boost on your STi. Iridium IX Spark Plugs are the most technologically advanced high performance plugs available. Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments. Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs. NGK's new Iridium IX is the personification of these qualities and takes premium performance spark plugs to a new level. A level that is expected from the world leader in spark plugs.

Subaru WRX STi Turbo Oil Supply Kit

For those of you who are building your own turbo kits and need a braided oil supply line, we have the solution for you. The factory oil supply hard line takes a special adapter that we manufactured into a one piece line. Oil line comes with a 90 degree fitting with 1/8" NPT to screw into most turbo oil inlets.

Turbonetics WRX Sti Blow of Kit

Please call for best pricing! These Turbonetics Subaru WRX STI blow-off valve kits feature the Raptor blow-off valve. They include a polished discharge horn and a diaphragm O-ring sealed valve seat to provide excellent throttle response. The kits also include necessary mounting brackets, rubber hose, and installation hardware.

Subaru WRX Sti JIC Spartan 100% Full Titanium Exhaust

Spartan DE Type 2 Ti (Titanium) features a full ultra lightweight titanium canister and a full ultra lightweight titanium piping. Each Spartan DE Type 2 comes with a full 80mm piping and a high quality Titanium to keep the exhaust noise to a minimum. Each Spartan DE Type 2 Ti piping features a 1mm thick exhaust piping wall to allow heat to disapate faster. To enhance that important exhaust tone, the exhaust canister aids in keeping the exhaust tone clean. Each Spartan DE Type 2 Ti system features a ultra lightweight Titanium canister with either a single or dual exhaust tip (some applications may be a special order item). Ideal for the enthusiast that wants an exhaust with a low profile, yet craves for throttle response, a clean exhaust tone, true weight savings and performance found in no other exhaust system.

EcuTek Reflash Software Subaru Sti and WRX

Simplified version of the professional software tuning authorized EcuTeK tuners use to reflash the Advanced Subaru ECU. No need to wait for 10-15 minutes to reflash your ECU like many other systems out there, each reflashes take between 30-45 seconds. No more need to mail your ECU to an Authorized EcuTeK tuner for a high quality tune, base maps or custom internet tuning is now available via the internet. Internet tuning available for the entire world for all countries, makes and models. While being the #1 dealer of the EcuTeK Licensed System in the Western Hemisphere, we are also the ONLY company to offer true custom internet tuning with the I-Speed USA EasyECU. No need to worry about losing maps when the battery is disconnected, or when reseting the ECU. "Easy ECU" is the solution for ultimate engine management control, designed by EcuTeK for I-Speed USA.

Deatschwerks Injector Subaru STi (MY07+)

These are the same injectors demanded by many of the most discriminating Subaru tuners including Cobb. Prices are for a flow balanced set of 4 injectors Each set is individually tested and flow balanced in-house to within a 1-2% variance. The results are included in your custom flow report that accompanies every set of DW injectors. Our flow report also includes additional set-specific data useful for tuning. DW 2007+ STi injectors also feature... 100% drop-in fitment High Impedance coils to match OEM ECU optimized atomization and spray patterns o-rings Excellent spray pattern and atomization for excellent idle and tuning Technical assistance and tuning data available via phone or email 12-month comprehensive warranty PLUS you will receive a $100 rebate if you choose to send us your OEM injectors. A rebate form is included with each order. There is no core charge

Deatschwerks Injectors Subaru STi (MY04-06)

NEW 850cc size - fuel for the big turbos! These are the same injectors demanded by many of the most discriminating Subaru tuners including Cobb. Prices are for a flow balanced set of 4 injectors Each set is individually tested and flow balanced in-house to within a 1-2% variance. The results are included in your custom flow report that accompanies every set of DW injectors. Our flow report also includes additional set-specific data useful for tuning. DW STi injectors also feature... 100% drop-in fitment OEM 12-orifice atomization plate (4-hole for 550's and 650's) upper and lower o-rings High Impedance coils to match OEM ECU Excellent spray pattern and atomization for excellent idle and tuning Technical assistance and tuning data available via phone or email 12-month comprehensive warranty PLUS you will receive a $160 rebate if you send us your OEM injectors. A rebate form is included with order. There is no core charge

GReddy BOV Flange for Subaru WRX/STI

Adapter flange to bolt GReddy Type RS (or Type S) BOV onto stock location on Subaru WRX/STI intercooler. All mounting hardware included to mount and vent to open atmosphere.

Subaru Walbro 255lph Fuel Pump

One of the leading original equipment fuel pump suppliers, Walbro fuel pumps set the industry standard for quality and dependability. Walbro has entered into the performance world with the hottest selling and most frequently used performance pumps on the market.