If you’re a diesel truck enthusiast or a performance-focused owner of a 6.7L Cummins, you’ve probably heard of delete kits. These kits are popular among off-road and race truck owners who want to maximize power, improve fuel efficiency, and simplify engine maintenance. In this article, we’ll cover the best delete kits for 6.7 Cummins engines in 2025, what they do, and things to consider before making a purchase.
Important Note on Legality
Before we dive in, it's essential to mention that deleting emissions systems such as the EGR (Exhaust Gas Recirculation), DPF (Diesel Particulate Filter), and DEF (Diesel Exhaust Fluid) is illegal for on-road vehicles in most countries, including the U.S., Canada, and many parts of Europe. These kits are intended for off-road or racing use only. Installing them on a road vehicle can result in heavy fines, failed inspections, or loss of warranty.
What Is a Delete Kit for 6.7 Cummins?
A delete kit typically removes or bypasses emissions components that restrict airflow and reduce engine performance, including:
EGR Delete Kit – Prevents exhaust gases from re-entering the engine.
DPF Delete Pipe – Replaces the factory diesel particulate filter with a straight pipe.
DEF Delete – Eliminates the need for diesel exhaust fluid.
ECU Tuner – Reprograms the engine control unit to run efficiently without these systems.
The result? More horsepower, better throttle response, improved fuel economy, and a cleaner engine over time.
Top 5 Delete Kits for 6.7 Cummins in 2025
1. Sinister Diesel EGR Delete Kit
Best for: Quality and reliability
Why it’s great: Made from aircraft-grade aluminum, this EGR delete kit is a go-to for Cummins owners looking for durability and long-term gains.
Why it’s great: Comes with everything needed for a full delete. Includes pipes, gaskets, clamps, and optional ECU tuner.
Pros: Affordable, easy to install, all-in-one
Cons: Limited warranty
3. Diesel Dudes EZ Lynk Delete Kit
Best for: Tuning & monitoring
Why it’s great: Combines a full exhaust delete with the EZ Lynk Auto Agent – perfect for remote tuning, diagnostics, and real-time monitoring.
Pros: Wireless control, full support, powerful tuning
Cons: Higher price point
4. Flashark Racing DPF Delete Kit
Best for: Budget-friendly option
Why it’s great: Simple, affordable DPF delete pipe made of stainless steel. Ideal for those looking to start with a partial delete.
Pros: Low cost, solid quality
Cons: EGR delete not included
5. SPETUNER All-In-One Delete Kit
Best for: Performance enthusiasts
Why it’s great: Includes a performance tuner, DPF delete pipe, and EGR delete components – everything you need in one box.
Pros: Boosts horsepower and torque, easy installation
Cons: Only for off-road use
What to Consider Before Buying a Delete Kit
Vehicle Use: Strictly for off-road/racing? You're good. Street use? Be cautious.
Tuning Needs: Many delete kits require or include an ECU tuner.
Installation Skills: Some kits are plug-and-play, others require advanced mechanical knowledge.
Warranty Impact: Most delete kits will void the manufacturer’s warranty.
Final Thoughts
Choosing the best delete kit for your 6.7 Cummins depends on your goals—whether it’s raw performance, better fuel economy, or long-term engine reliability. Brands like Sinister Diesel, SPELAB, Diesel Dudes, and SPETUNER offer some of the most trusted kits on the market in 2025.
Just remember: while delete kits offer undeniable performance benefits, they come with serious legal and environmental responsibilities. Always check your local laws before installation.
8617862265069 
info@cndieselpart.com 
English 
