Dieselr Aluminized 4" Cat & DPF Race Pipes | GM 2500/3500 6.6L DURAMAX LML 2015.5-2016

The Dieselr Aluminized 4" Cat & DPF Race Pipes (2015.5–2016) are engineered for maximum flow efficiency, durability, and precise fitment. Constructed from 4-inch heavy-gauge aluminized steel, these pipes provide a smooth, unrestricted exhaust path that helps maintain cooler temperatures and consistent power under load.

Each Dieselr system is mandrel-bent for optimized airflow and precision-welded for structural strength and longevity. The aluminized coating shields against corrosion, heat, and debris, ensuring reliable performance even in harsh environments.

Designed with factory-style alignment and clamping points, installation is straightforward, resulting in a tight, clean fit that holds up over time. Built to Dieselr’s performance standards, this setup combines mechanical strength, seamless flow, and proven endurance.

Key Features

• 4" aluminized steel for strength and corrosion resistance
• Mandrel bends for efficient, consistent exhaust flow
• Factory-style hangers for clean, secure installation
• Tested for long-term reliability under demanding conditions