4" inch Muffler Bypass Pipe

Features:

• 4" inlet and outlet diameter
• 30" overall pipe length
• T304 stainless steel construction
• Replaces most 30" diesel mufflers
• Designed for maximum exhaust flow
• Built for off-road and race use
• Ideal for aggressive exhaust sound
• Highly resistant to corrosion and rust
• Universal fit for diesel applications
• Perfect for severe driving environments
• Easy to clean and maintain finish
• No internal baffling for straight-through flow

Unleash Raw Performance with a Straight-Through Upgrade

If you're looking to open up your exhaust system and let your diesel breathe, and sound, the way it was meant to, the MBRP MDS30 4-inch Muffler Bypass Pipe is a simple but effective solution. Built from premium T304 stainless steel, this 30-inch universal pipe replaces your factory muffler with a straight-through design that eliminates restriction and boosts flow. That means quicker spool-up, improved throttle response, and a much more aggressive exhaust tone. Whether you're chasing more power or just want your truck to sound the part, this bypass pipe delivers on all fronts.

Built to Last and Designed to Fit

Designed for universal fitment on diesel trucks with a 30-inch muffler, this bypass pipe is perfect for owners who want maximum performance without compromising on build quality. The high-grade stainless steel resists rust and corrosion, making it a solid option for trucks that face harsh climates or see off-road abuse. Plus, the polished finish makes it easy to clean and keeps your undercarriage looking sharp. Installation is straightforward for most exhaust setups, but as always, it’s worth measuring your current muffler length before ordering to ensure a perfect fit.

Fits: Universal

Notes:

• 4" inlet and outlet for high-flow performance
• 30" overall pipe length for universal diesel fitment
• Premium T304 stainless steel resists rust and corrosion
• Replaces most 30" factory diesel mufflers
• Straight-through design for unrestricted exhaust flow
• Built for off-road and competition use
• Delivers an aggressive and powerful exhaust tone
• Ideal for trucks in harsh driving environments
• No internal baffling for maximum efficiency
• Universal fit for most diesel applications
• Polished finish is easy to clean and maintain
• Helps improve throttle response and turbo spool-up