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ISR Series II EP Single resonated exhaust system for S13 240SX with blast pipe tip
ISR straight-through resonated muffler in Series II EP Single exhaust
Close up of ISR 4.5" polished slant-cut blast pipe tip on S13 exhaust
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ISR Performance Series II - EP Single Tip Blast Pipe Exhaust - Resonated - 89-94 Nissan 240sx (S13)

ISRIS-S2EPSR-S13
Axle Back
Out of stock
$ 577.50 $ 548.63
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SKU: IS-S2EPSR-S13

ISR Performance Series II EP Single Tip Blast Pipe Exhaust - Resonated - 1989-1994 Nissan 240SX S13

The ISR Performance Series II EP Single resonated blast pipe exhaust delivers a deep, aggressive tone and increased flow for the S13 240SX with a single-exit design and 4.5" slant-cut tip. Featuring 3" mandrel-bent 304 stainless steel piping, a straight-through resonated muffler, and a "blast pipe" style outlet, this cat-back system provides improved throttle response, reduced weight, and a clean JDM-inspired look while keeping sound levels street-friendly compared to non-resonated versions.

Key Features

  • 3" Mandrel-Bent 304 Stainless Tubing: Full 3" diameter from catalytic converter flange to tip for maximum flow.
  • Resonated Muffler: Straight-through perforated core muffler reduces rasp and drone while maintaining aggressive tone.
  • Single Exit Blast Pipe Design: 4.5" slant-cut tip with rolled edge for JDM style.
  • Direct Bolt-On: Uses factory hangers and mounting points – no modification required.
  • Polished Tip & Hanger: Mirror-polished 4.5" tip and stainless hangers.
  • Power Gains: +10-15 whp / +12-18 wtq typical with supporting mods.
  • Weight Savings: Approximately 10-15 lbs lighter than factory exhaust.
  • Made for Performance: Designed and manufactured by ISR Performance.

Product Notes

  • Complete cat-back system – bolts to factory or aftermarket catalytic converter.
  • Part number: IS-S2EPSR-S13 (Series II resonated single tip).
  • Single side exit (passenger side) with blast pipe styling.
  • Fits all S13 models: Coupe, Convertible, Hatchback (1989-1994).
  • Compatible with KA24DE and SR20DET engines.
  • Total system weight approximately 28-32 lbs.
  • Limited lifetime warranty on stainless construction.

Installation Notes

  • Direct bolt-on replacement – no cutting or welding required.
  • Professional installation recommended for proper hanger alignment.
  • Use new gaskets at catalytic converter flange.
  • Typical install time 1-2 hours.

This Part Fits

Year Make Model Chassis
1989-1994 Nissan 240SX S13 Coupe / Hatch / Convertible

Why Choose ISR Performance?

  • Leader in affordable high-quality S-Chassis exhaust systems.
  • Series II EP Single is one of the most popular S13 exhausts for clean look and sound.
  • Trusted by drift, street, and show 240SX owners worldwide.

Frequently Asked Questions

  • Q: Is this louder than stock?
    A: Yes, deep aggressive tone with moderate volume thanks to resonator (quieter than non-resonated version).
  • Q: Does it fit with aftermarket catalytic converters?
    A: Yes, bolts to factory-style 2-bolt flange.
  • Q: Will this cause a check engine light?
    A: No, cat-back system does not affect O2 sensors or emissions.

Shipping & Handling

  • Method: Freight truck (long box).
  • Package Weight: Approximately 40–45 lbs.
  • Box Dimensions (approx): 60" × 16" × 12".

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