Tomei Expreme Ti Titanium Cat-Back Exhaust – Subaru WRX Hatchback 2011–2014 / STI Hatchback 2008–2014 | TB6090-SB02B

Hatchback (GR/GH) only — does not fit the WRX or STI sedan. Confirm your chassis is the 5-door hatchback before ordering.

Tomei TB6090-SB02B Expreme Ti full titanium cat-back exhaust for the Subaru WRX hatchback (2011–2014, GR) and STI hatchback (2008–2014, GH). Single exhaust outlet, bolt-in silencer included. 15.8 lbs. Ships fast across Canada and the US.

Tomei Expreme Ti

The Expreme Ti is Tomei’s flagship titanium exhaust line — one of the most respected cat-back systems available for the Subaru EJ platform. Tomei develops each Expreme Ti system specifically for its application, optimising pipe diameter, bend radii, and collector geometry for the target power and torque curve rather than applying a generic exhaust formula. The result is a system that improves mid-range and peak power through reduced back-pressure while maintaining bottom-end torque characteristics — not simply a loud, free-flowing pipe. Used extensively in Subaru time attack, rally-spec, and high-performance street builds globally.

Titanium Construction — 15.8 lbs

The Expreme Ti is constructed from aerospace-grade titanium tubing throughout — from the mid-pipe to the muffler canister and tip. At 15.8 lbs for a complete cat-back system, it is substantially lighter than comparable stainless steel systems (typically 30–40 lbs for the same application), delivering a meaningful unsprung and total vehicle weight reduction. Titanium’s superior heat resistance compared to stainless steel also reduces underbody heat load. Over time, the titanium piping develops a characteristic heat-discolouration pattern — blue, gold, and purple tones — considered part of the system’s aesthetic appeal in the enthusiast community.

Single Outlet with Bolt-In Silencer

The TB6090-SB02B exits as a single large-diameter titanium tip. A bolt-in silencer insert is included in the kit — the silencer inserts into the outlet and reduces exhaust sound level for noise-restricted environments such as track days with sound limits or residential driving conditions. The silencer is removable, allowing the full exhaust note when conditions permit. This is a practical advantage over systems with no silencer option, particularly for drivers who track their car at sound-limited venues.

Cat-Back — Downpipe Not Included

This is a cat-back system — it connects from the catalytic converter back to the rear of the vehicle. The OEM downpipe, uppipe, and catalytic converter are retained. Compatible with OEM and aftermarket downpipes. For maximum system performance, pair with a Tomei or aftermarket equal-length header and downpipe.

Fitment

• 2011–2014 Subaru WRX Hatchback — GR chassis — US 5-door
• 2008–2014 Subaru STI Hatchback — GH chassis — US 5-door
• Hatchback only — does not fit sedan (GE/GV chassis)

Hatchback only. Professional installation recommended — titanium exhaust components require care during installation to avoid thread galling on titanium fasteners; use anti-seize on all titanium-to-titanium thread contacts. Do not use steel fasteners against titanium surfaces without isolation. Allow full exhaust system heat cycles before final torque check on all joints.

Specifications

• Brand: Tomei
• Part Number: TB6090-SB02B
• Series: Expreme Ti
• Material: Titanium
• Type: Cat-back
• Outlet: Single
• Silencer: Included (bolt-in)
• Weight: 15.8 lbs
• Application: 2011–2014 Subaru WRX Hatchback (GR) / 2008–2014 Subaru STI Hatchback (GH)