ISR Performance ST Series Dual Exhaust - Infiniti Q50 14+ VQ37 VR30

The ISR Performance ST Series Dual Exhaust is a Y-pipe-back system for the 2014 and newer Infiniti Q50. Built from stainless steel with bottle-style resonators and dual 4-inch tips, it gives the Q50 an aggressive deep tone and a cleaner under-car look while bolting up directly to the factory Y-pipe.

What It Does

This is a direct bolt-on replacement for the factory mid-pipe and rear muffler section. The system starts at a 2-bolt 3-inch flange that splits into dual 2.5-inch piping with bottle-style resonators, then continues back to two aggressive mufflers with 4-inch tips. Designed for owners who want a deeper, more aggressive exhaust note without going full straight-pipe.

Fitment

Fits 2014 and newer Infiniti Q50, both engine options:

• 2014-2015 Infiniti Q50 with VQ37VHR (naturally aspirated 3.7L V6)
• 2016 and newer Infiniti Q50 with VR30DDTT (twin-turbo 3.0L V6)

Bolts to the factory Y-pipe. Requires the OEM Y-pipe or an aftermarket Y-pipe with the factory 3-inch 2-bolt flange.

What's in the Box

• 1x Resonator section
• 2x Muffler sections with 4-inch tips
• 3x 2-bolt 2.5-inch gaskets
• 6x Bolts
• 6x Nuts

Product Details

Brand: ISR Performance

Part Number: IS-ST-Q50

Type: Y-Pipe Back Dual Exhaust

Vehicle Fitment: 2014+ Infiniti Q50 (VQ37VHR and VR30DDTT)

Material: Stainless steel

Piping Diameter: Dual 2.5-inch

Tip Diameter: 4-inch

Resonators: Bottle style, included

Inlet Flange: 3-inch 2-bolt

Installation: Direct bolt-on, gaskets and hardware included

Sold: Complete dual exhaust system

Legality: Off-road and competition use only