Give your 370Z a louder, cleaner exhaust sound while dropping the bulky factory dual-muffler setup with this single-exit catback from Bull Boost Performance. It uses 3-inch stainless steel piping with a polished 4.5-inch tip, giving the Z34 a simple race-inspired look from the back.
This is a Y-pipe-back exhaust, so it bolts to the existing Y-pipe and uses the factory rubber hangers. The 3-inch layout works well on a naturally aspirated VQ37VHR and gives you plenty of exhaust flow if a supercharger or turbo setup is part of the plan later.
Fitment Information
- 2009 Nissan 370Z Z34 3.7L VQ37VHR
- 2010 Nissan 370Z Z34 3.7L VQ37VHR
- 2011 Nissan 370Z Z34 3.7L VQ37VHR
- 2012 Nissan 370Z Z34 3.7L VQ37VHR
- 2013 Nissan 370Z Z34 3.7L VQ37VHR
- 2014 Nissan 370Z Z34 3.7L VQ37VHR
- 2015 Nissan 370Z Z34 3.7L VQ37VHR
- 2016 Nissan 370Z Z34 3.7L VQ37VHR
- 2017 Nissan 370Z Z34 3.7L VQ37VHR
- 2018 Nissan 370Z Z34 3.7L VQ37VHR
- 2019 Nissan 370Z Z34 3.7L VQ37VHR
- 2020 Nissan 370Z Z34 3.7L VQ37VHR
- 2021 Nissan 370Z Z34 3.7L VQ37VHR
Fitment Note: This exhaust connects behind the existing Y-pipe. If the car already has an aftermarket Y-pipe, confirm that it uses the factory-style rear flange location and a compatible three-inch connection.
Specs & Features
- Y-pipe-back single-exit exhaust system
- 3-inch T304 stainless steel tubing
- 1.5mm exhaust tubing wall thickness
- Polished 4.5-inch exhaust tip
- 10mm waterjet-cut T304 stainless steel flange
- TIG-welded and hand-fabricated construction
- Muffler hanger included
- Uses the factory rubber exhaust hangers
- Designed for increased exhaust flow
- Crisp and sporty exhaust tone
- Designed to reduce cruising drone
- Bull Boost part number 720595374361
How Does It Sound?
This is a single-exit 3-inch exhaust, so it will make the VQ37 louder and more aggressive than the factory dual system. Bull Boost designed the muffler to keep the sound crisp while cutting down on some of the drone you can get from a basic straight pipe.
The final sound will depend on the rest of the exhaust. Aftermarket headers, test pipes or high-flow catalytic converters will make it louder and can add more rasp than the stock catalytic converters.
Single-Exit Appearance
A single-exit conversion removes the factory dual-exit look, so one of the two rear bumper openings will no longer have an exhaust tip. That is normal for this style of exhaust and is part of the stripped-down track look most people want from a single-exit 370Z setup.
Installation Notes
The exhaust bolts to the existing Y-pipe and uses the factory rubber hanger locations. Loosely install the complete system before tightening the flange so you can line up the muffler and 4.5-inch tip under the rear bumper.
Check clearance around the rear subframe, differential and chassis brace before driving the car. Professional installation is recommended, especially if the car has an aftermarket Y-pipe or other exhaust changes.
Pairs Well With
- ISR Y-Pipe for Nissan 370Z Z34 (09-21) - Uses a three-inch outlet after the merge, making it a good match for the Bull Boost single-exit exhaust. Confirm flange compatibility before ordering, especially on NISMO models.
- Vibrant 3-Inch High-Temperature Exhaust Gasket - A replacement gasket for matching three-inch two-bolt exhaust flanges. Check the flange shape and bolt spacing on your Y-pipe first.
- BLOX 4-Hole Adjustable Exhaust Hanger - Useful if the factory rubber hanger is stretched or you need a little more adjustment when positioning the single muffler and tip.
Emissions and Sound Notice
This system installs behind the Y-pipe and does not replace the factory catalytic converters. Check local sound and exhaust regulations before ordering, especially if the car already has headers, test pipes or high-flow catalytic converters.
About Bull Boost Performance
Bull Boost Performance makes exhaust, engine, suspension and fabrication parts for Nissan, Honda, BMW and other popular platforms. Its Nissan lineup includes parts for the 350Z, 370Z, Skyline and GT-R.
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Bull Boost Performance Exhaust
Nissan 370Z Exhaust
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