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  • Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
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Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
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Load image into Gallery viewer, Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
Load image into Gallery viewer, Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
Load image into Gallery viewer, Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
Load image into Gallery viewer, Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
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Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139

Exhaust, Mufflers & Tips Catback
Flowmaster
flo817139
Special order
September 23, 2026
Not CARB compliant. Not legal for sale or use in California on emissions-controlled vehicles.
$956.16 $1,199.95
This American Thunder® exhaust system comes as a complete true dual Crossmember-Back exhaust for your 1969 Chevrolet Camaro or Pontiac Firebird with V8 engine. These dual systems feature 2.50-inch mandrel-bent stainless steel tubing for maximum performance, includes a built-in H-pipe/balance tube flowing into a pair of Super 44® mufflers that deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The 2.50-inch tailpipes exit straight out under the rear bumper and are finished off with 2.50-inch angle-cut brushed stainless steel tips and includes all hangers and necessary hardware for installation. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage and is covered by our Lifetime Limited Warranty. To fit Convertible models without modification to the factory X-brace. You will need to shim the brace with 3/8-inch of spacers, or replace the factory X-brace with Hotchkis Suspension part# 1404 X-brace. Convertible models require an aftermarket X-brace like Hotchkis Performance part 1404 or 3/8-inch shims to stock X-brace for clearance. Features & Benefits Does Not Include Header Reducers or Factory Manifold Downpipes Stainless Steel Exhaust Tips Exit in the Factory Location Super 44 Series Mufflers for...
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Flowmaster 1969 GM F-BODY 2.5in. SS American Thunder Crossmember-Back Exhaust System - 817139
SKU: flo817139
Product Details

Everything You Need To Know

Review product information, shipping and returns, and price-match details before you order.

Product Info

This American Thunder® exhaust system comes as a complete true dual Crossmember-Back exhaust for your 1969 Chevrolet Camaro or Pontiac Firebird with V8 engine. These dual systems feature 2.50-inch mandrel-bent stainless steel tubing for maximum performance, includes a built-in H-pipe/balance tube flowing into a pair of Super 44® mufflers that deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The 2.50-inch tailpipes exit straight out under the rear bumper and are finished off with 2.50-inch angle-cut brushed stainless steel tips and includes all hangers and necessary hardware for installation. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage and is covered by our Lifetime Limited Warranty. To fit Convertible models without modification to the factory X-brace. You will need to shim the brace with 3/8-inch of spacers, or replace the factory X-brace with Hotchkis Suspension part# 1404 X-brace.

Convertible models require an aftermarket X-brace like Hotchkis Performance part 1404 or 3/8-inch shims to stock X-brace for clearance.

Features & Benefits

  • Does Not Include Header Reducers or Factory Manifold Downpipes
  • Stainless Steel Exhaust Tips Exit in the Factory Location
  • Super 44 Series Mufflers for Deep Powerful Sound
  • H-pipe Crossover for Maximum Power and Deep Tone
  • Includes Hangers and Hardware for Installation
  • Mandrel-bent 16-gauge Stainless Steel Tubing
  • Moderate to Aggressive Exterior Exhaust Tone
  • Crossmember-Back True Dual Exhaust System
  • Lifetime Limited Warranty
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Special order and out of stock items are product-specific and lead times can vary. Please e-mail us if you are looking for an ETA / Lead Time on a specific product. Special order orders are subject to cancellation if the vendor cannot provide any ETA.

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Include the following:
Subject "Return for Order#"
Order Number
Part Number
Reason

Returns are eligible for up to 14 days from delivery of items. Accepted refunds can take up to 7-10 business days to process. All refunds are subject to a 25% restocking fee, if opened. Customer may be responsible for return shipping. If 14 days have gone by since your item was delivered, unfortunately we can’t guarantee you a refund or exchange. We reserve the right to deny any return request, based on provided information.

Alliance Racing is not responsible for ensuring part fitment. It is the responsibility of the purchaser to ensure the parts being ordered are the correct fitment for the vehicle intended. Alliance Racing will not accept any returns for incorrect fitment after product is opened.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Shipping

To return your product, mail your product to:
Alliance Racing LLC
8810 Twin Lakes Blvd
Tampa, FL 33614

In many cases, you will be responsible for shipping costs to return your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping will be deducted from your refund.

Depending on your location, the time it may take for your exchanged product to reach you may vary.

If you are shipping an item over $100, you should consider using a trackable shipping service and/or purchasing Shipping Insurance.

To initiate a price match, please e-mail sales@allianceracing.com with the product information (SKU, URL, & Part Name) and a link to the competitors product page for us to validate the price match eligibility.

Please note that there are cases when we cannot offer a price match, but we will do everything in our power to try to match it. Some manufacturers have Pricing Policies that we have to adhere to.

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