Collection: SALE

This Independence week, tune with pride and save big. From June 30– July 5, DieselR is giving you the freedom to build smarter with automatic discounts on our top tuning gear:

🔹 5% OFF DIESELR EGR & Exhaust Kits
🔹 10% OFF All-In-One Kits
🔹 15% OFF Custom Tune Files

No codes, no hassle — discounts apply automatically at checkout.

Whether you're running Cummins, Powerstroke, or Duramax, this collection features precision-built kits and tune files that get the job done right. From ECM tuning and TCM unlocks to full airflow upgrades, every part is real-world tested for clean power and smoother performance.

Stock isn’t freedom.
Shop DieselR. Flash Fast. Haul Hard.