SKU: 3139416909

2017-2026 FULLY POLISHED T304 Duramax 6.6 Stainless Steel 5" Exhaust

$427.50 $475.00
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 23 - Sep 28

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

2017-2026 FULLY POLISHED T304 Duramax 6.6 Stainless Steel 5" ExhaustAre you a big dog? The best of the best and nothing else for your truck? THIS is the ultimate exhaust for the 2017+ 6. 6 Duramax. T304 Stainless Steel, Fully polished. SEMA ready (no bluetooth drive shafts included). This is a 5" Downpipe back single exhaust system that compares to the 680NM or SS680NM system by FLO PRO and similar systems by MBRP and Jamo for the 2017 2019 6. 6L, 2500 3500 W OEM 4 BOLT FLANGE EC CC SB LB DUALLY, PICKUP ONLY. This kit

Are you a big dog? The best of the best and nothing else for your truck? THIS is the ultimate exhaust for the 2017+ 6.6 Duramax. T304 Stainless Steel, Fully polished. SEMA ready (no bluetooth drive shafts included).
This is a 5" Downpipe back single exhaust system that compares to the 680NM or SS680NM system by FLO-PRO and similar systems by MBRP and Jamo for the 2017-2019 6.6L, 2500/3500 W/ OEM 4-BOLT FLANGE EC-CC/SB-LB-DUALLY, PICKUP ONLY. This kit allows you to remove the restrictive OE exhaust system, it will open up your exhaust system and lower your EGTs. This exhaust system does not include a muffler and is intended for race trucks only. Comes with all the required clamps, pre-weld contour bent hangers, and stronger flanges to help you cruise through the installation process. This kit not only sounds great, but will improve fuel mileage, throttle response, and torque in your 6.6L.
  

Features:

  • 5" Downpipe Back Race Exhaust
  • No Muffler
  • Easy Install
  • T304 Polished STAINLESS STEEL - NO CHEAP ALUMINIZED STEEL HERE!!
  • Single Side Exit
  • All cab size and bed length configurations
  • This exhaust is designed to work with our aftermarket downpipe available HERE 

  • Exhaust will work with most other aftermarket downpipes and may work with OEM downpipe, but again, it is designed to work with our downpipe for guaranteed fitment.

Manufactured by ProPower Diesel in the USA.

IMPORTANT NOTE
In 2017, GMC made a production change in the connection between the catalytic converter and the turbo direct pipe on the L5P. Please ensure you have the newest 4-bolt style flange before ordering.

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: 3139416909

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4.7 ★★★★★
Based on 25 reviews
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R
Verified Purchase
rose
Waukegan, US
★★★★★ 5
Awesome Suit!!
I purchased this suit for my boyfriend to wear to a party. I ordered an XL, he is 6'6" and 230lbs, initially the fit was fantastic and looks amazing but after wearing it and moving around in it for about 30 minutes, the pants started to slip down. The fabric has quite a bit of spandex in it and tends to stretch out after wearing for a little bit, it fits great right after it has been dried but then stretches out again. I ended up taking in the waist a little bit so the pants stay up, a large would likely have been a better fit. But he always looks amazing when he wears it and gets lots of compliments on the fun pattern. Definitely worth it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 7, 2024
J
Verified Purchase
jayymerk
Charlottesville, US
★★★★★ 5
Great suit!
Size: X-Large, Color: Navy With Blue
I was pleasantly surprised by the quality of this Mage Male dress suit. The material feels very soft with a velvet-like texture that makes the entire outfit pop without being over the top. This suit is perfect for prom, weddings, or any event where you want to elevate your look a bit. Sizing was accurate for me, so make sure you follow the size chart closely. I recommend picking up an inexpensive tape measure here on Amazon to double-check your measurements — it makes a difference. For the price, this suit is absolutely worth it and I’d buy it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
B
Verified Purchase
Brad Nuzum
Lexington, US
★★★★★ 5
Top notch suit
Material quality was too notch well worth the money. The size was true to size in all areas. Very stylish suit and so many compliments on it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 16, 2025
C
Verified Purchase
Ctfire
Dallas, US
★★★★★ 4
Looks great. Size ok.
Overall looks great. The fit was good other than the pants were a little too long and the adjustable bow tie strap was a little to short. I'm 5'9.5" and 170lbs with longer than average limbs for a comparison.
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Reviewed in the United States on December 17, 2024
T
Verified Purchase
Trevor Helbert
Lowell, US
★★★★★ 5
Great feel good suit
Size: Large, Color: Red With Goden
My husband looked so good in this. The color was popping. The size was true to fit and he’s very tall. Feels so soft and didn’t wrinkle at all. Very good material and fabric. Cheaper than I thought
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026

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