DIESELR Universal Twister/Auger Muffler
This universal diesel truck muffler delivers a deep tone and smooth flow. Ideal for custom builds needing high-performance, low-backpressure exhaust.
CAD $278.32
Join the Bad Guy Motors email list for product drops, garage inspo, and VIP invites. We'll email a one-time 5% off code as soon as you subscribe.
One-time 5% welcome code
Good on any product or service invoice.
Early access
Be first to hear about limited builds, gear, and events.
Direct inbox
Need help? Reply to any email and the crew will jump in fast.
Prefer texting? Call 403-525-0432 or email support@badguymotors.com.
get your 2020-2026 Duramax 6.6L with DIESELR Downpipe Back Exhaust. Lower EGTs, improve airflow, and get a deeper sound. Off-road use only.
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.
This universal diesel truck muffler delivers a deep tone and smooth flow. Ideal for custom builds needing high-performance, low-backpressure exhaust.
Install the DIESELR Cat & DPF Race Pipe on your 2007–2012 Cummins 6.7L. Built tough with stainless steel for airflow, sound, and off-road performance.
Install the DIESELR Cat & DPF Race Pipe on your 6.4L Powerstroke (2008–2010). Built from stainless steel for strength, fitment, and off-road performance.