DIESELR’s GM Duramax performance exhaust systems are built to eliminate factory restrictions, improve turbo spool-up, and reduce EGTs for 2.8L, 3.0L, and 6.6L Duramax engines. Whether you need a turbo-back or downpipe-back exhaust, our systems are engineered for real-world durability and power gains.
DIESELR’s GM Duramax performance exhaust systems are built to eliminate factory restrictions, improve turbo spool-up, and reduce EGTs for 2.8L, 3.0L, and 6.6L Duramax engines. Whether you need a turbo-back or downpipe-back exhaust, our systems are engineered for real-world durability and power gains.
✔ Mandrel-bent stainless steel for maximum flow & durability
✔ Direct-fit installation with turbo-back & downpipe-back options
✔ Designed for LB7, LLY, LBZ, LMM, LML, L5P, LM2, and LWN Duramax models
Turbo-Back & Downpipe-Back Exhaust Kits
Upgrade to a high-flow exhaust system that improves turbo efficiency and unlocks real power.
- Lower EGTs for increased reliability under heavy loads
- Deep, aggressive tone that lets your Duramax sound like it should
- Designed for 2001-2024 Duramax 6.6L & 2.8L/3.0L diesel models
Duramax Exhaust Manifolds & Downpipes
Optimize exhaust flow at the source with high-flow manifolds and downpipes for stronger turbo response.
- Reduces backpressure for improved turbo efficiency
- Mandrel-bent construction for unrestricted airflow
- Built for 2001-2024 Duramax applications
Performance Mufflers & Delete Pipes
Fine-tune your exhaust note with performance mufflers and delete pipes built specifically for Duramax diesel applications.
- Straight-through designs for maximum exhaust velocity
- Options for deep, aggressive tone or reduced cabin noise
- Fits 6.6L L5P, LML, LMM, and other Duramax applications
