2020-2026 GM 2500/3500 6.6L Duramax — Downpipe-Back — L5P
From $715
- Free shipping — every order, US & Canada
- Bolt-on install — no cutting, no welding
- Talk to a real tech — 888-322-4233 before you buy
Competition use only. This system is sold for sanctioned racing and closed-course use — not legal for sale or use on pollution-controlled vehicles on public roads. Removing or defeating emissions equipment (DPF, EGR, SCR) on a street-driven truck violates federal law. Read the Off-Road Use Policy before you buy.
WANT THE MATCHED BUILD? BUNDLE &amP; SAVE.
Pair this exhaust with a tuner + EGR in a Full Send Kit — priced to beat buying parts solo.
— // OVERVIEW
BUILT TO FLOW, BUILT TO LAST
A complete 4″ or 5″ downpipe-back for the 2020-2026 GM 2500/3500 6.6L Duramax, mandrel-bent end to end in premium T409 stainless. Frees the exhaust for stronger flow and a deeper, meaner note — and bolts on with everything you need.
— // SPECS
Additional information
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Pipe Size | 4", 5" |
| Material | Aluminized, T409 Stainless |
| Muffler | No Muffler, With Muffler |
| System Type | Downpipe-Back |
| Platform | Duramax 6.6L L5P (2017+) |