Remark R1-Spec Exhaust | 22+ Civic Si, 23+ Integra A-Spec

Fits:

• 2022+ Honda Civic Si
• 2023+ Acura Integra (Base, A-Spec)

Includes the Honda OEM plastic garnish cover for the driver's side tip opening — this is included only when purchasing directly from Unity Performance. Available in Stainless with Polished Tip or Titanium Muffler with Burnt Tip.

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Light and to the point: the R1-Spec uses a high-flow design with minimal bends to actually optimize flow rather than just look like a performance part. It's not overly loud under acceleration and stays subtle at cruise, but you still get real burbles on gear changes and off-throttle deceleration — the fun stuff without the fatigue of a system that's loud all the time.

The full system runs 2.5" from the first flange at the OEM front pipe connection through to the muffler inlet, using mandrel-bent 304 stainless steel piping and a straight-through muffler design for genuinely improved flow over the factory setup.

Features

• 2.5" mandrel-bent 304 stainless steel piping
• Straight-through single-exit muffler design
• Subtle at cruise, audible burbles on shifts and decel
• Stainless/polished or titanium/burnt tip options
• Includes OEM garnish cover (Unity Performance direct purchase only)