Cat-Back Exhaust

This durable, purpose-built, cat-back exhaust system for the Jeep Wrangler JL 2 door improves clearance over rough terrain for the adventurist who wants it all. Large, 3" mandrel-bent 409 stainless steel tubing outflows the restrictive factory exhaust to deliver gains of up to +9 horsepower and +8 lbs. x ft. of torque, as measured on our in-house dyno. The free-flowing muffler delivers a powerful, performance tone while the ROCK BASHER'S shortened pre-axle turndown tip handles off-road obstacles. This system utilizes factory mounts for a quick and simple install.

Additional Information

ROCK BASHER 2-1/2 IN to 3 IN 409 Stainless Steel Cat-Back Exhaust System Jeep Wrangler (JL) 18-26 V6-3.6L

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

• 100% Hand MIG-Welded For Strength and Durability
• 409 Stainless Steel Tubing For Unrestrictive Exhaust Flow
• Free Flowing Stainless Steel Muffler
• Muffler Has A Powerful Aggressive Performance Tone
• Shortened Pre-Axle Turn Down Exit Offers More Ground Clearance

Important Notice relating to US Domestic Market Trucks & Pickups

Many US-market trucks and pickups are available in multiple cab and bed-length configurations (e.g., Single Cab, Extended Cab, Double/Crew Cab, CrewMax, 5.5ft/6.5ft/8ft beds, etc.). Exhaust system fitment can vary between these chassis versions.

Where available, we list all compatible vehicles, cab types, and bed lengths in the product description. However, depending on your exact configuration, some systems may require optional extension/mid-pipes or minor modification for correct fitment.

Because of these variations, please carefully check your cab configuration and bed length before purchasing. If you are unsure, or if your vehicle has been modified, please reach out to a StreetFX agent.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Exhaust System, Rock Basher Series, Cat-back, Stainless Steel, Natural, Underbody Exit, No Tip, Jeep, Kit

The aFe Rock Basher exhaust systems are durable, purpose-built cat-backs for the 2018 Jeep Wrangler JL. They improve clearance over rough terrain for the adventurist who wants it all. The large 3 in. mandrel-bent 409 stainless steel tubing outflows restrictive factory exhausts, delivering gains of up to 9 hp and 8 lbs.-ft. of torque, as measured on aFe's in-house dyno. The free-flowing muffler delivers a power performance tone, while the Rock Basher's unique pre-axle turn-down tip handles off-road obstacles. These exhaust systems utilize factory mounts for a quick and easy install.