BMW 325Ci Performance Exhaust by Dinan — Freeflow Axleback with Tuned Resonance Chamber, Polished (2001–2006). A purpose-built axle-back that improves exhaust flow and tone while keeping daily drivability intact.

Crafted from 20-gauge 304 stainless steel with rigid, durable muffler cases, this system employs Dinan’s Tuned Resonance Chamber and drone abatement technology to balance performance with a refined, sporty sound. Dual 2.5 in polished, laser-engraved tips provide a clean performance look, and the assembly drops weight to about 17 lb versus the 28 lb stock unit. With supporting software, gains of up to +5 hp and +4 lb-ft at 6500 rpm are achievable. Installs using factory brackets and hangers for factory-like fitment on the E46 325Ci.

Features

• Free Flow axle-back design for increased exhaust efficiency
• 100% 304 stainless steel, 20-gauge construction
• Tuned Resonance Chamber for balanced tone
• Drone reduction to minimize cabin resonance
• Dual 2.5 in polished, laser-engraved tips
• Approx. 11 lb lighter than stock (17 lb vs 28 lb)
• Uses factory brackets and hangers

Have questions or want to book installation? Call 512-982-9393 (TX) or 562-981-6800 (CA). We offer installation and customization at our Austin, Texas and Los Angeles, California locations.

Thinking about multiple items? Contact us for shipping discounts. We install on premises at both locations.

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