ISR Performance Series II EP Dual Tip Blast Pipe Exhaust System -Non Resonated- Nissan 240sx 89-94 (S13)

The ISR Performance Series II EP Dual Exhaust System (Non-Resonated) is the modular successor to the original EP Dual exhaust for the 1989-1994 Nissan 240SX (S13). Picks up where the popular original EP Dual left off, with stainless steel 3-inch piping merging to a dual 3-inch rear exit, plus all-new pipe routing for improved ground clearance and an extended tip that fits properly with both stock and deeper aftermarket aero bumpers.

What It Does

Catback replaces the entire exhaust system from the cat back, running 3-inch piping through the non-resonated mid-section back to a dual 3-inch rear exit with extended tips. The Series II routing improvement is the marquee feature: ISR raised the pipe routing compared to the original EP Dual to add ground clearance, which is critical on lowered S-Chassis where a low-hanging exhaust constantly catches on driveway entries, speed bumps, and uneven pavement. Stylish, aggressive, and finally compatible with serious ride heights.

Includes the Series II non-resonated mid-section, which delivers maximum sound aggression with no rasp control. The choice for owners who want the loudest possible note from the Series II platform.

Modular Series II Architecture

The Series II platform is built around interchangeable sections. The mid-section and rear-section can be swapped independently:

• Mid-sections: Resonated or Non-Resonated
• Rear sections: EP Single, EP Dual, or GT Single

If your taste in tone or rear exit style changes, you don't have to replace the entire exhaust. just swap the relevant section. Series II sections are not backward-compatible with original ISR exhaust systems.

Fitment

• 1989-1994 Nissan 240SX (S13)

What's in the Box

• 1x EP Dual Rear Section (S13)
• 1x Non-Resonated Mid Section
• 1x Gasket and hardware pack

Product Details

Brand: ISR Performance

Part Number: IS-S2EPDNR-S13

Type: Catback Dual Exhaust (Series II)

Vehicle Fitment: 1989-1994 Nissan 240SX (S13)

Series: Series II (modular, interchangeable mid + rear sections)

Mid-Section: Non-Resonated

Rear Configuration: EP Dual (dual 3-inch tips with extended length)

Material: Stainless steel

Piping Diameter: 3-inch (mid), dual 3-inch (rear)

Bumper Compatibility: Stock bumpers and aftermarket aero bumpers

Ground Clearance: Improved routing vs. original EP Dual / GT Single

Modular Architecture: Mid and rear sections individually swappable with other Series II components

Backward Compatibility: NOT compatible with original (pre-Series II) ISR exhausts

Installation: Direct bolt-on, gaskets and hardware included

Sold: Complete catback (mid + rear)

Legality: Off-road and competition use only