Flowmaster · New
Flowmaster 67-68 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System
MPN 817129 · Store SKU flo817129
Supplier stock checked 11/8/2026, 8:09:18 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
For the person who is looking for a true dual Crossmember-Back exhaust system with an moderate to aggressive exhaust tone. With an easy fit in mind, these systems are constructed from 16-gauge mandrel-bent stainless steel tubing with a built-in H-pipe crossover, a pair of specially selected Super 44 Series mufflers and includes all hangers and hardware necessary for installation. The American Thunder systems deliver a moderate to aggressive interior and exterior tone and are best suited to the enthusiast who wants their performance to be heard. Like all Flowmaster exhaust systems, the benefits include improved throttle response, power and mileage. If you prefer Aluminized steel construction, check out optional system# 17129. Fits 1967-1968 Camaro and Firebird with V8 engine. 2.50 inch Stainless Steel - Aggressive to moderate sound Flowmaster American Thunder Crossmember-Back Exhaust System
Manufacturer fitment & guides
Check 817129 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y
