370Z / G37 / G35 High Flow Metallic Catalytic Converters - Z1 Motorsports - Performance OEM and Aftermarket Engineered Parts Global Leader In 300ZX 350Z 370Z G35 G37 Q50 Q60
place
expand_more
close
check_circle_outline Added to Cart
370Z / G37 / G35 High Flow Metallic Catalytic Converters
shopping_cartCart
payment

Checkout

Discover More Products

Z1 Motorsports Urethane Rear Differential Bushing Set
Z1 Motorsports Urethane Rear Differential Bushing Set
$100
OEM R35 GT-R Red Start Button
OEM R35 GT-R Red Start Button
$41.78
Z1 Motorsports Fiberglass Thermal Exhaust Wrap
Z1 Motorsports Fiberglass Thermal Exhaust Wrap
$40
Z1 Motorsports 370Z / G37 Cold Air Intake Kit
Z1 Motorsports 370Z / G37 Cold Air Intake Kit
$498
Z1 Motorsports Zino Air Freshener
Z1 Motorsports Zino Air Freshener
$5
Z1 VQ37 Intake Plenum Power Mod 370Z & G37
Z1 VQ37 Intake Plenum Power Mod 370Z & G37
$298
close

370Z / G37 / G35 High Flow Metallic Catalytic Converters

starstarstarstarstar_half 4.6/5 - (18 Reviews)
Fits models: 370Z / G35 / G37

Product Description

These High Flow Catalytic Converters are fully constructed of Stainless Steel. Using a 100 cpsi Stainless steel spiral wound core, they are the highest flowing bolt on converter available that is OBDII compliant.  The Stainless Steel cores are high heat resistant and offer excellent flow characteristics. 

Take advantage of freeing up your exhaust while not picking up the "Rasp" commonly associated with test pipes when used on the "HR" and "VHR" engine platforms.  

Often the RTV sealing method or composite gasket for the 3 bolt flange from the manifold to the test pipe doesn't hold up over time due to extreme exhaust temperatures and can fail leading to irritating exhaust leaks and potential Check Engine Lights.  To solve this potential problem Z1 has designed and produced our very own multilayer metal exhaust gasket for this application.  This gasket is similar in construction to the manifold to turbo gaskets we have used for years on turbo applications.  It has proven to be one of the strongest and most robust parts on any car we have used them on; these gaskets can be removed and reinstalled countless times without any problems.  Now we include them in our kits, and make them available separately here. 

Each order includes: on pair of High flow cats, one pair of Metal multilayer 2.5 inch 3 bolt gaskets, and one pair of composite 2.5 inch 2 bolt gaskets, and all necessary hardware.

We cannot guarantee that any of the different brands of high flow catalytic converters we sell will not cause a CEL (check engine light). From our experience it is not a problem on 90% of cars.

Fits:

  • 2009+ Nissan 370Z
  • 2008-2013 Infiniti G37 Coupe
  • 2009-2013 Infiniti G37 Sedan
  • 2007-2008 Infiniti G35 Sedan

Optional:

One roll of Z1 Heat Wrap can be included at a discount rate using the options below. Z1 Exhaust Wrap is ideal for wrapping test pipes, high flow cats, or any other radiant heat sources under hood or under the car. Includes 4 14'' stainless steel ties.

Please note:

Like many aftermarket parts, these HFCs are intended for off-road use only.  Please check with local laws when installing aftermarket parts!

 

Available Options:

Please review the product description if you are unsure about any of the options below.

Include:

Quantity:

Price: $498.00
add_shopping_cart Add to Cart
commentLeave a Review question_answerAsk A Question About This Product

Frequently Bought Together

check_circle_outline
Added to cart
Please select and verify all product options for this bundle.
check_circle_outline
Include:
370Z / G37 / G35 High Flow Metallic Catalytic Converters
370Z / G37 / G35 High Flow Metallic Catalytic Converters
starstarstarstarstar_half (18)
$498
add
check_circle_outline
Scent:
Z1 Motorsports Zino Air Freshener
Z1 Motorsports Zino Air Freshener
starstarstarstarstar_half (7)
$5
=
Bundle Price:
$503

Customers who bought this item also purchased ...

Z1 Motorsports Urethane Rear Differential Bushing Set
Z1 Motorsports Urethane Rear Differential Bushing Set
starstarstarstarstar (50)
$100
OEM R35 GT-R Red Start Button
OEM R35 GT-R Red Start Button
starstarstarstarstar (22)
$41.78
Z1 Motorsports Fiberglass Thermal Exhaust Wrap
Z1 Motorsports Fiberglass Thermal Exhaust Wrap
starstarstarstarstar (3)
$40
Z1 Motorsports 370Z / G37 Cold Air Intake Kit
Z1 Motorsports 370Z / G37 Cold Air Intake Kit
starstarstarstarstar_half (64)
$498
Z1 Motorsports Zino Air Freshener
Z1 Motorsports Zino Air Freshener
starstarstarstarstar_half (7)
$5
Z1 VQ37 Intake Plenum Power Mod 370Z & G37
Z1 VQ37 Intake Plenum Power Mod 370Z & G37
starstarstarstarstar_half (11)
$298

Questions our customers have asked

At some point of time I am going to purchase an exhaust system, and with that system I am going to buy a set of Cats for my 370z. I was wondering if these Cats are compatible with the Tomei expreme TI cat back exhaust system.
Yes they are compatible with the Tomei Cat Back.
Are these legal in California? Been looking for aftermarket CC for my Z and majority seems to be illegal here!
We have not submitted our High Flow catalytic converters for CARB approval/exemption. Sorry ours are not legal for street use in the republic of California.

Similar to this item

2 Bolt  Exhaust Gasket
2 Bolt Exhaust Gasket
starstarstarstarstar (5)
$7
Z1 Metal 2 Bolt Exhaust Gaskets
Z1 Metal 2 Bolt Exhaust Gaskets
starstarstarstarstar_half (7)
$14
Z1 Metal HR/VHR Manifold 3 Bolt Exhaust Gaskets
Z1 Metal HR/VHR Manifold 3 Bolt Exhaust Gaskets
starstarstarstarstar_half (4)
$17.50
Z1 Motorsports Stainless Steel Y-Pipe - 350Z/370Z/G35/G37/Q60
Z1 Motorsports Stainless Steel Y-Pipe - 350Z/370Z/G35/G37/Q60
starstarstarstarstar_border (23)
$288
Z1 Replacement Test Pipe MLS Gasket Set - VQ35HR / VQ37VHR
Z1 Replacement Test Pipe MLS Gasket Set - VQ35HR / VQ37VHR
starstarstarstarstar (8)
$58
370Z / G37 / Q50 / Q60 Stainless Steel Test Pipes
370Z / G37 / Q50 / Q60 Stainless Steel Test Pipes
starstarstarstar_halfstar_border (9)
$279

What our customers say

See all reviews
starstarstarstarstar
Elijah
April 26, 2021
These sound good does have a raspy brrrrrt at 4K but it’s worth the extra HP
starstarstarstar_borderstar_border
JOSEPH
April 26, 2021
Make the rasp sound and threw CEL shortly after installed on 2014 Q60s. Noticeably better performance than stock not tuned.
starstarstarstarstar
Adrian
April 7, 2021
Perfect fit and sound amazing. Waiting on tune and dyno
starstarstarstarstar
Jonathan
April 7, 2021
Great product! Very knowledgeable and helpful staff. Will be buying more products for my Infinitis.
starstarstarstarstar
Jose
April 1, 2021
They were a direct fit , no cutting or welding needed ! These cats are a perfect mod if you’re looking to deepen the tone of your exhaust , get more hp & better acceleration.
starstarstarstar_borderstar_border
Brandon
March 12, 2021
Overall a great product with low rasp and no check engine light, although the gaskets do not fix this product correctly so i had to buy my own :/
starstarstarstarstar
Ethan
February 9, 2021
I’ve had these for just about a year and put them through h*ll. I would recommend these to anyone in the market. The welds are very high quality.
starstarstarstarstar_border
Arash
January 26, 2021
My first time at installing these in my garage by myself. After approximately 36 hours in total and multiple stops at the local auto parts shop for better nuts and bolts, I installed them. I applied heat wrap to the converter part and the upper part of the pipe. The performance difference is felt immediately. In combination with my long tube cool air intakes, the gain in HP, especially past 4000 RPM is very obvious. The engine has become alive. They have lasted well for a year, very robust build. 4 stars for 1. included bolts have weak grooves and warped right away, had to buy a new nuts and bolts. 2. They have rasp at 2-4k, if taking off fast and especially when cold. When completely warmed up, less rasp and somewhat tolerable. Some drone, which I actually enjoy.
starstarstarstarstar_border
Robert
January 25, 2021
High-quality cats and sounds great! However, it did cause my CEL to come on.
starstarstarstarstar_border
Derrick
January 25, 2021
My check engine light came on after installing HFC. The up side is the car sounds a lot better
starstarstarstarstar
Nathan
January 25, 2021
Really good quality, they do rasp a bit, but with the right exhaust they will sound great! And you can feel the power in top end.
starstarstarstarstar_border
Dustin
April 2, 2020
Fit good, added with aftermarket catback. Eventually did throw CEL, Slight rasp at 3500 rpm, as others stated. Good Sound.
starstarstarstarstar
JUSTIN
August 15, 2019
Purchase these a couple days ago for my 2015 to q70s Very impress
starstarstarstarstar
Lorenzo
March 10, 2019
Bought them for my 08 G37. Perfect fit. No CEL. Sounds great even after almost a year of use.
starstarstarstarstar
Pete
June 3, 2017
These will free up a little power (better with a tune), lose some weight, and add a little volume to your aftermarket exhaust. I have the Stillen exhaust and they sound good. There is a quick rasp at around 3,500 rpms, but they car sounds great overall. I got no CE lights for quite a while, but they eventually did start throwing codes. Not a big deal for me as I was planning a tune anyway, but keep this in mind if you do not plan to tune the car. I have a '13 G37S sedan 6spd.
starstarstarstarstar
Tyler
April 16, 2017
The cats I received looked a bit different as the HFC's were smaller and the secondary bung was extended parallel to the pipe a few inches. Fitment with the Z1 headers was near perfect, some washers and a little tweaking to line the factory tie in bar. Some relief cuts on the Stillen cat back just behind the flanges to line them up without forcing them together and overstressing the pipe (that's how you crack stuff). I did however get frustrated with the buzzing. Let it be known that I was able to eliminate my header/HFC buzz, keep a really deep growl at idle, preserve most of the beautiful VQ exhaust note and without losing more than I can count on one hand's worth of power, if any. I bought 50 Feet of DEI 1200 degree exhaust wrap, $48 Advance Auto. Cut it in half and double wrapped both HFC pipes from flange to flange. Then I cut in secondary HFC's for both banks immediately after the midpipe to HFC pipe flanges, no more than 5-6" of substrate. After a good cook in period the buzz is all gone, even when it's cold. Idle is a mean deep growl, and there is no drone at all. It's very tame between idle and 3k now at normal accel (2-3k seems to be the problem area for the buzz) but comes to life with any decent amount of throttle, the more you give it the more it sounds like a proper VQ! This was how I conquered the buzz with my old DE and this, my VHR.Don't be afraid to purchase such amazing quality parts for fear of unwanted resonation! It's much easier to kill than you think!
starstarstarstarstar
Matt
January 25, 2017
Gave these hell for almost 2 years, no issues with hfc or gaskets. Highly recommended.
starstarstarstarstar
Matt
March 15, 2016
Sounds great. No cel light in almost a year of daily driving. Min rasp/hiss. Great overall quality