Description
Overview
The Flowmaster 70 Series Chambered Muffler is engineered for enthusiasts who want a smooth, refined exhaust note without giving up performance. Built as a big-block-friendly design, the 70 Series uses Flowmaster’s proven Delta Flow® technology paired with an enlarged case to deliver improved sound control while helping to unlock mileage and power gains. It’s a versatile, universal-fit muffler built to handle a wide range of street and strip applications where space allows.
Constructed from durable 16 gauge aluminized steel and fully MIG welded, this muffler is finished with a high-temperature paint that helps it hold up to the heat and demands of daily driving, towing, and spirited street use. The larger case and chambered internals are tuned to deliver a mild sound level, making it an ideal choice for drivers who want a deeper presence under acceleration and comfortable, drone-free cruising.
Key Benefits
Whether you’re outfitting a work truck, a family SUV, a weekend cruiser, or a high-performance street car, the 70 Series balances refined tone with the flow characteristics that Flowmaster is known for. The enlarged case design is specifically well suited to larger vehicles and tow rigs, giving you the improved sound control you want while supporting efficiency and power.
- Delta Flow® technology engineered for improved sound control, mileage, and power gains
- Enlarged case ideal for trucks, SUVs, RVs, tow vehicles, and high-performance street cars where space allows
- Durable 16 gauge aluminized steel construction, fully MIG welded for maximum durability
- High-temperature paint finish built to withstand heat and the elements
- Mild sound level for a smooth, refined exhaust note and comfortable cruising
- 2.50″ inlet diameter with universal fitment for flexible installation
Fitment & Installation
This 70 Series Big Block muffler features a 2.50″ inlet diameter and a universal fitment, giving you flexibility across a broad range of exhaust setups. It’s designed for street/strip vehicle types and carries an Emission Code of 5. Installation uses new hangers, which are not included, so plan to source the appropriate mounting hardware for your application. Exhaust tips are also sold separately, allowing you to complete the look exactly the way you want.
Why Choose the 70 Series
For drivers who want a heavy-duty, well-built muffler that pairs a mild, refined tone with the flow benefits of Flowmaster’s Delta Flow® design, the 70 Series is a smart upgrade. Its aluminized steel construction and full MIG welds are made to last, while the enlarged case makes it a natural fit for tow vehicles and larger platforms. Choose the configuration that fits your build and enjoy a cleaner, more controlled exhaust note backed by Flowmaster engineering.
