Dinan Free Flow Axle-Back Exhaust for 2001-2006 BMW 325i/330i E46 - D660-4602

Give your E46 BMW 325i or 330i a sportier exhaust note, improved exhaust flow, and polished performance appearance with the Dinan D660-4602 Free Flow Axle-Back Exhaust. Designed for select 2001-2006 BMW 325Ci, 325i, 325xi, 330Ci, 330i, and 330xi applications, this system features 20-gauge T304 stainless steel muffler construction, Dinan Tuned Resonance Chamber Technology, and polished 2.5-inch laser-engraved exhaust tips. Dinan reports gains of up to 5 HP and 4 lb-ft of torque at 6,500 RPM when paired with applicable software.

The Free Flow system is engineered to increase exhaust flow while maintaining a civilized exhaust character for street use. Dinan's internal resonance technology helps reduce unwanted cabin drone while producing a louder, sportier tone under acceleration. The stainless steel construction provides corrosion resistance, and the system uses factory brackets and hangers for factory-style mounting.

Key Features & Specs:

• Brand: Dinan
• Series: Free Flow
• Product Type: Axle-Back Exhaust
• Part Number: D660-4602
• Fitment: BMW 325i / 325Ci / 325xi / 330i / 330Ci / 330xi
• Chassis: E46
• Material: T304 Stainless Steel
• Body Material: 20-Gauge T304 Stainless Steel
• Pipe Material: T304 Stainless Steel
• System Finish: Brushed
• Tip Finish: Polished Stainless Steel
• Tip Diameter: 2.5 in
• Tip Branding: Laser-Engraved Dinan Logo
• Maximum HP Gain: +5 HP at 6,500 RPM with applicable software
• Maximum Torque Gain: +4 lb-ft at 6,500 RPM with applicable software
• Resonance Control: Dinan Tuned Resonance Chamber Technology
• Sound: Louder, sportier exhaust note
• Drone Control: Designed to reduce unwanted cabin resonance
• Installation: Uses factory brackets and hangers
• Clamps Included: Yes
• Hangers Included: Yes
• Labor Time: 1.5 hours
• Length: 48 in
• Width: 30 in
• Height: 11 in
• Grade Type: Performance
• Dinan Point Value: 3
• Emission Code: 5
• UPC: 813725021928

Fitment:

• 2001-2006 BMW 325Ci
• 2001-2005 BMW 325i
• 2001-2005 BMW 325xi
• 2001-2006 BMW 330Ci
• 2001-2005 BMW 330i
• 2001-2006 BMW 330xi