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Get DIESELR MPVI4 Tune Files (2017-2019 Duramax L5P 6.6L) for real power, better response, and stronger torque. Choose Single Tune or SOTF 5 Tunes.
Custom fitments
Tell us about your platform, performance goals, and timeline. We’ll map the parts, confirm availability, and send back a detailed quote with next steps.
Custom fitment brief
Outline your vehicle, performance targets, and timeline. The build desk will confirm availability, pricing, and next steps in writing.
Dieselr aluminized cat & DPF race pipe—built with heavy-gauge steel and precision mandrel bends to improve flow, lower temps, and resist corrosion.
Dieselr 4" aluminized CAT & DPF/SCR race pipe kit for 2016–2019 Titan 5.0L Cummins—clean fit, smooth flow, and durable steel construction.
Built for Nissan Titan XD, the DIESELR Downpipe-Back Aluminized Exhaust System replaces the stock exhaust with a free-flowing 4" or 5" mandrel-bent system.