Subaru WRX STI 6MT TY856UB1KA Complete Swap Package

Whether you’re replacing a tired STI drivetrain or converting a WRX into a true STI underneath, finding every part in good condition takes time. This complete STI 6MT swap package saves you that search. It’s built around a Subaru WRX STI 6-speed manual, code TY856UB1KA, and includes the R180 rear diff, black Brembo calipers and rotors on four-corner 5×114.3 hubs, axles, a 6MT shifter, both subframes and the suspension links. As a result, you get a matched set of genuine STI parts in one purchase.

What’s Included

• STI 6-speed manual transmission, TY856UB1KA
• R180 rear differential
• Four-corner 5×114.3 hubs
• Black Brembo calipers and rotors on all four corners
• Axles
• 6MT shifter
• Front aluminum control arms
• Rear lateral links and rear trailing arms
• Front and rear subframes

The STI 6-Speed Advantage

The STI 6-speed is one of the toughest manual transmissions Subaru ever built. In fact, many builders consider it the go-to gearbox for high-power EJ and FA builds. In addition, its close-ratio sixth gear keeps the engine in its power band. Moreover, the DCCD center differential lets the driver adjust the front-to-rear torque split, which is great for track days, snow or gravel.

Brembo Brakes on All Four Corners

Stopping power matters as much as power. This package includes black Brembo calipers with rotors on all four corners, mounted on 5×114.3 hubs. Consequently, you get the strong, fade-resistant braking the STI is known for, plus a clean, factory-style look behind the wheels.

About DCCD

The 2008–2021 STI 6MT uses DCCD, so it needs a DCCD controller and wiring to control the center differential. However, these aren’t included unless shown in the photos. Therefore, if you’re converting a WRX, plan to source a controller, or ask us about options when you order.

Fitment

• 2008–2014 Subaru WRX STI (GR/GV): replacement or rebuild
• 2015–2021 Subaru WRX STI (VA): replacement or rebuild
• 2008–2021 WRX to STI conversions, with the correct supporting parts
• Wheels must clear the Brembo calipers and match the 5×114.3 bolt pattern

Subframes and suspension links can differ between generations, so send us your VIN and plans, and we’ll confirm everything fits your car. For background, see the Subaru Impreza WRX STI overview.

Swap Checklist

1. Confirm the front and rear final drive ratios match.
2. Fill the transmission and rear diff with fresh gear oil of the correct grade.
3. Install a clutch and flywheel suited to the STI 6-speed.
4. Bleed the brakes and inspect every hub bearing and CV boot.
5. Install and test the DCCD controller and wiring if converting.
6. Finish with a professional alignment.

Professional Installation Available

Want it done right the first time? J-Spec Auto Sports installs the engines, transmissions and parts we sell at our shop in Henrico, Virginia, near Richmond. We handle complete STI drivetrain swaps, from subframes and hubs to DCCD wiring and alignment. To get a quote or book a time, schedule an appointment or call 866-683-3747.

Shipping and Pickup

We palletize this large, multi-piece package carefully and ship it by freight anywhere in the continental US. Given its size, local pickup at our Henrico shop is also a great option.

FAQ

What years does this fit?
It’s for 2008–2021 Subaru WRX STI replacement or WRX to STI conversions. Subframes and links can differ by generation, so send us your VIN.

What bolt pattern are the hubs?
5×114.3, on all four corners.

Are the Brembo rotors included?
Yes, with black Brembo calipers on all four corners.

Is the DCCD controller included?
No, unless it’s shown in the photos.

Can you install the full swap?
Yes, at our Henrico, VA shop. Call 866-683-3747.