Description
Overview
The Flowmaster 70 Series Chambered Muffler delivers a mild, refined exhaust note built for drivers who want improved performance without an aggressive interior drone. Engineered around Flowmaster’s proven Delta Flow® technology, the 70 Series Big Block design pairs an enlarged case with smart chamber tuning to smooth out sound while helping unlock mileage and power gains. It’s a versatile, universal-fit muffler that works across a wide range of applications where space allows.
Whether you’re outfitting a daily-driven truck, an SUV, an RV, a dedicated tow vehicle, or a high-performance street car, the 70 Series is purpose-built for street/strip use. Its combination of durable construction and controlled, mild sound output makes it an ideal choice for owners who want a noticeable upgrade over a stock muffler without sacrificing everyday comfort.
Key Benefits
At the heart of this muffler is Flowmaster’s Delta Flow® technology, which manages exhaust pulses through its chambered design to reduce turbulence and refine tone. The enlarged case gives you the extra volume needed for improved sound control, while supporting the mileage and power benefits Flowmaster designed this series to deliver. Built from 16 gauge aluminized steel and fully MIG welded, this muffler is made to hold up to heat, road conditions, and long-term use.
- Delta Flow® technology for refined, mild exhaust sound and performance gains
- Enlarged case design for improved sound control plus mileage and power benefits
- 16 gauge aluminized steel construction, fully MIG welded for maximum durability
- High-temperature paint finish to withstand exhaust heat
- 2.50″ inlet diameter with universal fitment for flexible installation
- Mild sound level tuned for street-friendly driving
Fitment & Installation
This is a universal-fit muffler, giving you flexibility to integrate it into a wide variety of exhaust setups where space allows. It features a 2.50″ inlet diameter and installs using new hangers, which are not included, so plan to source the appropriate mounting hardware for your application. Exhaust tips are sold separately, allowing you to finish the look exactly the way you want.
Who It’s For
The 70 Series Big Block is an excellent match for trucks, SUVs, RVs, tow vehicles, and high-performance street cars. If you want a durable, well-built muffler that delivers a mild tone alongside the performance advantages of Delta Flow® technology, this Flowmaster muffler is a smart, proven upgrade. With an emission code of 5 and street/strip vehicle type classification, it’s positioned as a dependable exhaust component for enthusiasts and everyday drivers alike who value both refinement and long-term reliability.
