Skip to main content
Home » Jeep Exhaust » Cat-Back Systems » Flowmaster American Thunder Stainless Steel Cat Back Exhaust

Flowmaster 817674 American Thunder Stainless Steel Cat Back Exhaust for 07-18 Jeep Wrangler and Wrangler Unlimited JK

Quadratec Part #: 17618-0004
Flowmaster Part #: 817674
Description
Flowmasters new American Thunder cat-back system for the Jeep Wrangler JK is perfect for the person looking for maximum performance and ground clearance from their exhaust system. This 2.50 system features a 409S stainless steel mandrel bent tailpipe with a 3.00 polished stainless steel tip and fits both 2 and 4 door models with the 3.6L and 3.8L V6 engines. This system replaces the factory transverse muffler and relocates the Super HP-2 muffler behind the factory catalytic converter, providing a moderate to aggressive sound level. This relocation allows for better ground clearance when driving off-road. Because the tailpipe is tucked up so high, an aftermarket metal bumper is recommended. The exhaust system is manufactured in the USA and is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation
Details

Features

  • 2.50" Mandrel Bent Tubing
  • 409S Stainless Steel Construction
  • Provides Maximum Off Road Clearance
  • Patented Laminar Flow Technology
  • Lifetime Limited Warranty
Installation Notes
Installation Difficulty:
Skill Level 2 IconLevel 2Intermediate
Installation Time: 2-3 hours
Parts Included

Cat Back Exhaust System
Hardware/Instructions

Warranty
10 Year Limited on Stainless
  • Features: Angled Tip, Moderately Aggressive Tone, Turndown Tip
  • Color: Silver
  • Material: T-409 Stainless Steel
  • Type: High Clearance
  • Shipping Weight: 30lb
  • Shipping Dimensions: 50in x 16in x 10in (L x W x H)
  • Jeep Wrangler 2-Door (JK)

  • 2018 Jeep Wrangler 2-Door (JK)
  • 2017 Jeep Wrangler 2-Door (JK)
  • 2016 Jeep Wrangler 2-Door (JK)
  • 2015 Jeep Wrangler 2-Door (JK)
  • 2014 Jeep Wrangler 2-Door (JK)
  • 2013 Jeep Wrangler 2-Door (JK)
  • 2012 Jeep Wrangler 2-Door (JK)
  • 2011 Jeep Wrangler 2-Door (JK)
  • 2010 Jeep Wrangler 2-Door (JK)
  • 2009 Jeep Wrangler 2-Door (JK)
  • 2008 Jeep Wrangler 2-Door (JK)
  • 2007 Jeep Wrangler 2-Door (JK)
  • Jeep Wrangler Unlimited 4-Door (JK)

  • 2018 Jeep Wrangler Unlimited 4-Door (JK)
  • 2017 Jeep Wrangler Unlimited 4-Door (JK)
  • 2016 Jeep Wrangler Unlimited 4-Door (JK)
  • 2015 Jeep Wrangler Unlimited 4-Door (JK)
  • 2014 Jeep Wrangler Unlimited 4-Door (JK)
  • 2013 Jeep Wrangler Unlimited 4-Door (JK)
  • 2012 Jeep Wrangler Unlimited 4-Door (JK)
  • 2011 Jeep Wrangler Unlimited 4-Door (JK)
  • 2010 Jeep Wrangler Unlimited 4-Door (JK)
  • 2009 Jeep Wrangler Unlimited 4-Door (JK)
  • 2008 Jeep Wrangler Unlimited 4-Door (JK)
  • 2007 Jeep Wrangler Unlimited 4-Door (JK)
Share Your Thoughts
Review Summary
4.4
Based on 20 reviews
Shared Media
Questions

Customer Submitted Photos

Flowmaster American Thunder Stainless Steel Cat Back Exhaust Reviews

Questions