diamond eye performance

Diamond Eye 4" and 5 " Mufflers

Thoroughbred Sku #: DEMMUFFLER

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$143.35 - $259.95

Product Details

Product Name: 4" and 5 " Mufflers
Manufacturer: Diamond Eye
Application: Fits Most Diesels

Aluminized or Stainless mufflers available in perforated, louvered or big dog quiet tone styles. Thoroughbred Diesel offers both 4 inch as well as 5 inch Diamond Eye mufflers.


  • looking for quiet muffler for 04 ram 3500 5.9 quat cab that offer good flow numbers

    jimmy williams | 1/6/2020

    The diamond eye mufflers will work.

  • I am looking for a muffler for my 2004 ford excursion with the 6.0.I would like to find a quiet muffler that doesn't reduce performance.Can you please advise?Very respectfully, Rodney McGuire

    Rodney McGuire | 6/10/2019

    Of the two choices on that page, the louvered will be the quietest muffler as per the manufacturer. There is a muffler they offer that is not on site that is a “Quiet Tone” louvered and it is their quietest option.