Description
Overview
The Flowmaster Force II Crossmember-Back Exhaust System is engineered for the 1970-1973 Chevrolet Corvette and its 5.7L V8, delivering the performance-minded design and signature sound Flowmaster is known for. This complete bolt-on kit is built for the enthusiast who wants a moderate exterior tone paired with a mild interior tone — aggressive enough to turn heads, refined enough to keep cruising comfortable. Every component is designed to work together as a matched crossmember-back system, so you get consistent flow and fit from the crossmember all the way to the tips.
At the heart of the system are Flowmaster’s proven 50 Series Delta Flow mufflers, which are included in the kit and tuned to produce that balanced, moderate sound level. A Scavenger X-pipe assembly ties the two sides together to help exhaust scavenging, while the mandrel-bent pipes reduce restrictions and help maximize performance across the powerband. The dual 2.25 in. tailpipes route the spent gases out cleanly and finish in a factory-correct exit.
Key Benefits
This Force II system is built around genuine performance materials and thoughtful details. The exhaust is manufactured from durable 409S stainless steel for long service life, while the exhaust finishes with rectangular polished 304S stainless steel tips that measure 3.00 x 5.50 and carry an embossed tip logo. Those tips exit through the Corvette’s factory cutout bezels for a clean, integrated look that respects the car’s original styling. Flanged connections make assembly straightforward, and the silver pipe finish keeps everything looking sharp under the car.
- Direct crossmember-back design for the 1970-1973 Chevrolet Corvette 5.7L V8
- 50 Series Delta Flow mufflers included for a moderate exterior, mild interior tone
- Scavenger X-pipe assembly to promote exhaust scavenging and flow
- Fully mandrel-bent pipes to reduce restrictions and maximize performance
- Dual 2.25 in. tailpipes with 3.00 x 5.50 polished 304S stainless tips and embossed logo
- Constructed from 409S stainless steel with flanged mount connections
Fitment & Configuration
This system is designed specifically for 2WD applications and features a Dual Out Rear exit configuration. The polished tips are positioned to exit through the factory cutout bezels, so the installation looks factory-integrated rather than aftermarket. As a crossmember-back kit, it includes all necessary parts and hardware for installation, making it an easy, complete upgrade for owners who want a bolt-on solution without sourcing extra components. Please note a heat shield is not included with this system.
Compliance & Warranty
The Force II system is CARB (California) compliant and carries Emission Code 5. It also carries a California Proposition 65 warning. Backing the kit is Flowmaster’s Lifetime Limited Warranty, giving you long-term confidence in both the materials and the workmanship of your classic Corvette exhaust upgrade.
