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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 Passenger Side Up-Pipe for Duramax 6.6L improves reliability and exhaust flow. Built from 304 stainless. Direct fit for 2001–2016 GM trucks.
The DIESELR Universal Diesel Muffler reduces sound and supports strong flow. Stainless steel body with straight-through core. Available in 4" or 5"
Motor Vehicle Engine Parts