Product Description
Upgrade to straight-through flow and Armor Pro durability. The MBRP MDS30 is a universal 4" in/4" out T304 stainless muffler bypass (30" overall length) that replaces any 30" 4" muffler to cut backpressure and sharpen exhaust tone. Ideal for custom 4" systems on diesel or gas trucks where rules allow.
Fitment & Specs
- Inlet/Outlet: 4" ID / 4" ID (single)
- Overall Length: 30"
- Material/Series: T304 Stainless — Armor Pro Series
- Configuration: Straight-through muffler bypass (delete section)
- Fitment: Universal for 4" exhaust systems using a 30" overall muffler. Verify pipe size, hanger location, and clearance before install.
- Install: Weld or clamp (use proper band clamps for best seal); professional fitment recommended.
Why Choose Armor Pro (T304)
MBRP’s Armor Pro uses T304 stainless for maximum corrosion resistance—great for salted roads and harsh climates while keeping weight low and flow high.
Cross-Reference & Alternatives (MBRP Only)
- Want a budget aluminized 30" bypass? See MBRP GP016 30" Muffler Delete Pipe (4").
- Prefer to keep a muffler, still high-flow? See MBRP GP015 30" High Flow Muffler (4") or the Armor Pro T304 MBRP M1031 4" Muffler.
- Need a longer section? Check MBRP MDA36 36" Bypass (4", Aluminized).
- Building a 5" system? Choose MBRP MDA531 31" Bypass (5", Aluminized) or MBRP MDS9531 31" Bypass (5", T409).
- Chasing drone control with flow? Add the Armor Pro resonator MBRP R1009 (4", T304).
- Dual-in/dual-out universal option: MBRP MDDS927 Dual Bypass (4", T409).
Helpful Notes
- Replacing a muffler with a bypass increases sound level; tone varies by turbo, pipe routing, and tail section.
- Check local laws before use; some areas restrict muffler deletes for on-road vehicles.
FAQ
Will the MDS30 fit my truck?
It’s a universal 4" in/4" out, 30" overall section that replaces a 30" muffler in any 4" system. Measure your existing muffler length and pipe size and confirm hanger/clearance before ordering.
How loud is it compared to a muffler?
Noticeably louder with a sharper, more aggressive tone. Turbocharged diesels often keep some rasp in check, but expect increased volume under load and acceleration.
Armor Pro vs. Armor Lite—what’s the difference?
Armor Pro is T304 stainless for maximum corrosion resistance. Armor Lite uses aluminized steel at a lower cost. Choose based on climate, budget, and longevity goals.
Do I need welding?
Professional welding yields the cleanest, leak-free install. Quality band clamps can work if your system has straight slip joints and enough overlap.
What if I want to tame drone later?
Add the MBRP R1009 resonator in a straight section. It reduces drone while keeping flow high.
