SKU: 34400857727

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

Sale price$435.58 Regular price$483.98
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Description

Dinan D660-4602 Free Flow Axle-Back Exhaust Muffler E46 for BMW 325i/330iOverview: Dinan's Free Flow Axle Back Exhaust for the 3 series models provides increased flow for power gains without the excessive noise associated with typical ''performance'' mufflers. The Dinan exhausts feature rigid and durable muffler cases manufactured from 20 gauge 304 stainless steel for optimum corrosion resistance. Internally the systems feature Dinan's Tuned Resonance Chamber technology which provides the optimum balance between maximum

Overview:

Dinan's Free Flow Axle-Back Exhaust for the 3 series models provides increased flow for power gains without the excessive noise associated with typical ''performance'' mufflers. The Dinan exhausts feature rigid and durable muffler cases manufactured from 20 gauge 304-stainless steel for optimum corrosion resistance. Internally the systems feature Dinan's Tuned Resonance Chamber technology which provides the optimum balance between maximum power gains and a civilized, yet sporty exhaust note. The Dinan exhaust also provides substantial weight reduction compared to the stock muffler weighing in at just over 17 lbs. compared to the stock system at 28 lbs. Dual 2.5-inch diameter polished stainless steel exhaust tips give the cars a tasteful performance look as well.

Features:

  • More Power: + 5 HP @ 6500 RPM + 4 LB-FT @ 6500 RPM (w/ software)
  • Drone abatement technologies used to reduce cabin resonance
  • Enjoyably louder, sportier sound
  • Dual 2.5" polished and laser engraved exhaust tips
  • 11 lbs. lighter than stock (17 lbs. vs. 28 lbs.)
  • 100% 304 stainless steel construction
  • Uses the factory brackets and hangers for a factory-like fitment

Application:

Year Make Model Submodel Engine Size
2001 - 2006 BMW 325Ci 152/2.5L L6
2001 - 2005 BMW 325i 152/2.5L L6
2001 - 2005 BMW 325xi 152/2.5L L6
2001 - 2006 BMW 330Ci 3L L6
2001 - 2005 BMW 330i 3L L6
2001 - 2005 BMW 330xi 3L L6

Specs:

Brand Dinan
Dinan Point Value 3
Emission Code 5
Height 11
Labor Time (Hours) 1.5
Length 48
Material 304 Stainless Steel
Max HP Gain 5 @ 6500 RPM
Max Torque (lb-ft) Gain 4 @ 6500 RPM
Product Type Axle-Back Exhaust
Sound Level Aggressive / Moderate
System Type Axle-back
Warning California Proposition 65
Weight 39.3
Width 30
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34400857727

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4.8 ★★★★★
Based on 281 reviews
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Verified Purchase
Eric
Chelsea, US
★★★★★ 2
Good finish, poor hardware.
Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly. Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration. Ended up running self tapping screws thru parts to complete assembly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2024
C
Verified Purchase
Carl L. Bradley
Louisville, US
★★★★★ 1
Kinda flimsy…
Thought the assembly was metal, it’s some kind of PVC.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 22, 2025
M
Verified Purchase
Melvin Marsh
Whiting, US
★★★★★ 5
100% worth the money
Size: 16'' x 43'', Size: 16'' x 43''
Great product. They look good and function well.
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Reviewed in the United States on February 6, 2026
A
Verified Purchase
Amazon Customer
San Leandro, US
★★★★★ 5
Cheaper than the supply house.
Size: 42'' x 28''
I used black pipe similar to this to build some shelves in my man cave. I went looking to build a studio desk and found that Lowe's wanted $8 per floor flange (~$96 just for flanges and not including the pipe, tees, or the other fittings). Even supply house dot com wanted $4 per flange (~$48, but was still missing the other parts AND they didn't offer them because of supply chain issues). For about $65, this was a great buy. Yes everything is greasy. This will be the case regardless of where you buy it. I used some gloves, shop towels, and acetone and it cleaned up easily. For a top, I used a pre-made countertop from Lowe's (~$100) and a 1x4 piece of poplar I had sitting around.
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Reviewed in the United States on January 7, 2023
M
Verified Purchase
mjh
Massapequa, US
★★★★★ 4
Pipes don't assemble square, nice stand though.
Size: 42'' x 28''
These arent standard SCH40 pipe for starters. Significantly lighter. Easier to move around and sturdy enough to support a table, but this isnt pipe. As such, when I threaded it together, it wasn't square. I was able to flatten it mostly, but I had to use a clamp to bend the assembled piping to sguare so it would attach to the table runners. It's fine, but it surprised me. It looks nice, and it provides plenty of support for the table. All good. Several folks complained that the pipes are oily. They are supposed to be to prevent rust. I wiped them down with a few cleaner wipes, and they are fine. Be aware that this doesn't come with instructions or the wood screws you may need for your table top.
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Reviewed in the United States on February 8, 2023

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