OVERTAKE 3in Downpipe to Stock Cat-Back Adapter Subaru Turbo Models

Solve exhaust leak headaches the right way with the Overtake 3" Downpipe to Stock Cat-Back Adapter. This is the clean bolt-on solution for owners running an aftermarket 3" downpipe while keeping an OEM or OEM-style 2.5" cat-back. When those two worlds meet, leaks are common — this adapter is built to seal it up and keep flow moving the way it should.

Made from durable stainless steel and hand-welded for long-term reliability, the Overtake adapter features a smooth, flared transition (just shy of 3") to help maintain exhaust velocity and reduce the restriction found in many other adapters. It’s also designed to work with both OEM donut gaskets and flat-style gaskets for a dependable, leak-free seal.

Key Features

• Smooth 3" to 2.5" Transition: Flared design creates a seamless step-down from a 3" downpipe to a 2.5" OEM-style midpipe.
• Leak-Free Sealing Options: Flanged for OEM donut gaskets and compatible with flat-style gaskets for proper sealing.
• Stainless Steel Construction: CNC laser-cut stainless steel with hand-welded assembly for strength and durability.
• Maintains Exhaust Flow: Flared end helps avoid the flow restriction common with many stepped adapters.
• Bolt-On Install: Straightforward installation with required hardware included (gaskets sold separately).

Why We Like It

If you’re upgrading to a 3" downpipe but aren’t ready to commit to a full 3" cat-back, this adapter is the smart middle ground. It cleans up the connection, helps prevent leaks, and avoids the “choked” feel that can come from poorly-designed reducers.

What This Adapter Does

• Connects an aftermarket 3" downpipe to an OEM-style 2.5" cat-back / midpipe.
• Designed specifically for this direction of flow and fitment.

Installation Notes

• Designed as a bolt-on connection between a 3" downpipe and a 2.5" OEM-style cat-back.
• Ensure mating surfaces are clean and free of old gasket material before installation.
• Torque hardware evenly to prevent leaks and re-check after a heat cycle.
• Do not use this adapter in reverse. It is designed for 3" downpipe to 2.5" cat-back only.

Important Notes

• Gaskets Sold Separately: Overtake 3" gaskets and Overtake Subaru donut gaskets are not included. If your downpipe does not include gaskets, you will need them.
• Intended for use with OEM-style 2.5" cat-backs/midpipes. Fitment may vary with custom exhaust setups.

What’s in the Box

• (1) Overtake 3" to 2.5" Exhaust Adapter
• Mounting hardware (per Overtake kit contents)

Compatibility & Disclaimers

This adapter is intended to mate an aftermarket 3" downpipe to an OEM-style 2.5" exhaust system. Always confirm your downpipe outlet style and cat-back inlet style before ordering. Gaskets are required for proper sealing and may need to be purchased separately depending on your setup. Check local emissions and noise regulations before modifying exhaust components.