The top 5 exhaust brands enthusiasts actually trust for the New HD Frame — L5P Duramax (2017-2019) GMC Sierra 2500HD/3500HD (Duramax) — ranked by community reputation and fitment reliability.
2017-2019 GMC Sierra 2500HD/3500HD (Duramax) · Exhaust
InstantFetched 2d ago · Refreshes in 58d
MBRP
Proven durability, excellent fitment, strong community trust.
Widely available through major performance retailers.
Banks Power
Superior engineering, reliable fitment, preferred by diesel owners.
Widely available through major performance retailers.
AFE Power
Quality construction, consistent fitment, strong reputation overall.
Widely available through major performance retailers.
Flo-Pro
Specialized diesel expertise, reliable performance, good fitment.
Sold through select diesel-focused retailers and online.
Magnaflow
Quality mufflers, good sound, solid fitment reliability.
Widely available through major performance retailers.
Adds live pricing, recent forum sentiment, and fitment notes from real-time search.
Curious what to expect? Here's a sample report for VA (2015-2021) Subaru WRX.
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