Kinetix Racing Hi-Flow Catalytic Converter Set (370Z | G37 | Q50 | Q60)

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  • $449.99
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Fits: 2007-2009 Nissan 350Z, 2009-2017 Nissan 370Z, 2007-2008 Infiniti G35 Sedan, 2009-2013 Infiniti G37 Sedan, 2008-2013 Infiniti G37 Coupe, 2014-2015 Infiniti Q60 Coupe, 2014-2015 Infiniti Q50 Sedan


  • "Spun" cat design has a full stainless construction for much higher strength and flow
  • More clearance for easier installation
  • The most affordable FULL stainless constructed SMOG passable catalytic converter in the industry
  • New and Improved with more installation clearance and long term strength!

The factory catalytic converters are well known as the biggest "choke point" in the factory exhaust system. These high flow stainless spun 
catalytic converters blow away the stock converter flow rates while still maintaining legal emissions levels.

Constructed with stainless tubing and 3/8" stainless flanges. Fully TIG welded and true mandrel bends used throughout. These converters will bolt up to any header (factory or aftermarket) and any exhaust (factory or aftermarket). These pipes also retain the factory Oxygen sensor location and WILL NOT THROW A CHECK ENGINE LIGHT!!.

Expect great performance gains from these converters as they have dyno'd between 7-9 hp at the wheels on factory 350Z's. They only add a slightly more aggressive exhaust note and do not have the pesky "raspiness" between 3-4k rpm that is seen with straight through test pipes.

These pipes come complete with necessary installation hardware.

Note: Please check local laws regarding catalytic converters. Our cats are 49 state legal and do not have a CARB number associated with them.

***These pipes are currently on backorder and are expected to ship 3-4 weeks after order placement***


Customer Reviews

Based on 2 reviews
Barry Little
Sounds Good Like A VQ Should!

The factory cats on my '09 370Z had seen better days, impacting gas mileage, performance, and basically ruining the sound of my Motordyne Shockwave exhaust system. But there was no way I was going to spend OVER TWO GRAND for OEM replacements, when there were better and much cheaper alternatives out there. VQ Boys and Kinetix Racing to the rescue with the Kinetix Racing Hi-Flow Catalytic Converter Set!

Kinetix cats are made of stainless steel. They are noticeably lighter in weight than the OEMs. Stainless means no more rust. Overall quality is better than some of the cheaper, no-name brands. A peek inside reveals they are a LOT less restrictive than OEM catalytic converters. Better flow = better sound and performance.

When paired with the Motordyne Shockwave cat-back exhaust system for the 370Z, the "trumpet sound" VQs are known for becomes a bit quieter, smoother, more powerful and deeper-sounding without being brash and obnoxious. The butt dyno registered an improvement as well—nothing dramatic, but noticeable. A stage-two tune would definitely liven thing up even more.

Whether you're replacing your old cat converters that have outlived their usefulness, or want an improvement in sound with a little extra performance while remaining smog-legal (except in California), and don't want to deal with those annoying CELs, the Kinetix Racing Hi-Flow Catalytic Converter Set is an excellent choice.

Alton Daniels
G35 high flow catalytic

Thanks guys. Everything is perfect