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GrimmSpeed HiFlow Exhaust Manifold Crosspipe Ceramic Coated - Subaru Models (inc. 2002-2005 2008-2014 WRX / 2004-2014 STI)
GrimmSpeed HiFlow Exhaust Manifold Crosspipe Ceramic Coated - Subaru Models (inc. 2002-2005 2008-2014 WRX / 2004-2014 STI)
GrimmSpeed HiFlow Exhaust Manifold Crosspipe Ceramic Coated - Subaru Models (inc. 2002-2005 2008-2014 WRX / 2004-2014 STI)
GrimmSpeed HiFlow Exhaust Manifold Crosspipe Ceramic Coated - Subaru Models (inc. 2002-2005 2008-2014 WRX / 2004-2014 STI)
GrimmSpeed HiFlow Exhaust Manifold Crosspipe Ceramic Coated - Subaru Models (inc. 2002-2005 2008-2014 WRX / 2004-2014 STI)
GrimmSpeed HiFlow Exhaust Manifold Crosspipe Ceramic Coated - Subaru Models (inc. 2002-2005 2008-2014 WRX / 2004-2014 STI)
GrimmSpeed HiFlow Exhaust Manifold Crosspipe Ceramic Coated - Subaru Models (inc. 2002-2005 2008-2014 WRX / 2004-2014 STI)
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User Media for: GrimmSpeed HiFlow Exhaust Manifold Crosspipe Ceramic Coated - Subaru Models (inc. 2002-2005 2008-2014 WRX / 2004-2014 STI)

GrimmSpeed HiFlow Exhaust Manifold Crosspipe Ceramic Coated

Subaru Models (inc. 2002-2005 2008-2014 WRX / 2004-2014 STI)

Read 13 Reviews | 21 Q&As
Part # 001002
$259.00

In stock!
Ships within 24 hours

Features & Product Details

What's one of the most overlooked anti-flowing Subaru pieces you ask?? ...The stock exhaust manifold crossover. 50% of your exhaust gasses are passing through this tiny tiny pipe and that is not good. Well here comes the solution for this problem.

Welcome the GrimmSpeed Version 2 Subaru Exhaust Manifold HiFlow Crossover. Well they've decided to step it up a notch with the first revision of the crossover. Meet HiFlow Crossover v2. Immaculate welds, smooth as butter 2" stainless steel, thick 12mm stainless flanges. You can't beat this piece.

Customers have seen up to 15 HP INCREASE when combined with a PnP Subaru Exhaust Manifold. This unit is built from 2" 304 Stainless Steel throughout, maximizing exhaust flow from cylinders 1 and 4 to the manifold collector for faster turbo response. This unit has a flex in the center to allow for easier installation and for thermal expansion during hard driving.

Add on GrimmSpeed's amazing Ceramic Heat Coating help keep the heat in and speed up those exhaust gasses even more.

This includes all the gaskets necessary for installation.

Specifications

Brand: GrimmSpeed
Flange Thickness: 12mm
Installation Hardware Included: Yes
Piping Coating: Yes
Piping Flex Joint: Yes
Piping ID: 2.00in
Piping Material: 304 Stainless Steel
Piping Taper: No
Mfgr. Warranty: Lifetime
Condition: New Product
Return Policy:
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REVIEWS & CUSTOMER MEDIA

13 Reviews
5 out of 5 Stars
5 Stars
(13)
4 Stars
(0)
3 Stars
(0)
2 Stars
(0)
1 Stars
(0)
Customer Photos and Videos
GrimmSpeed HiFlow Exhaust Manifold Crosspipe Ceramic Coated ( Part Number: 001002)
Great mod, fits 2015+ STI 3 months ago
5out of 5stars

Great piece to add to your car if you want to upgrade your stock headers but don't want to spend $750+ for aftermarket headers and still want to keep that UEL rumble. It's high quality, ceramic coated and works great with an uppipe upgrade. Sounds a little bit louder, deeper, more of a growl. Also want to say it absolutely 100% fits my 2017 STI, and any ej257 2015+ STI
  
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0 of 1 people found the following review helpful
Nice piece 3 years ago
5out of 5stars

Easy to install. I chose the coated for the few bucks more. I don't have to deal with wrapping or worse. This piece pretty much finished a complete exhaust. Sounds great now Super fast shipping!
  
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2 of 6 people found the following review helpful
Cross pipe 4 years ago
5out of 5stars

So I'll start by saying I've ran the stock mani, Tomei ELH, Tomei UEL header, and full Race header. and punched this unit and spent Aprox 7-8 hrs porting and polishing, the factory collectors and ceramic coating them and by far this hits like a 2 stroke dirt bike. (Ps I'm running the domain 1.5XTR 10cm ) by far out of all the headers this is the one to beat hits crazy hard but that's part of my protune. Engine/AVCS ramps up torque then the turbo hits. Think a 250 2 stroke (CR, RM,YZ KX) what ever your flavor and apply that to your STI provided you have ported the factory collectors. Also running a GS up-pipe with Tial 38mn gate.
  
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1 of 7 people found the following review helpful
Grimmspeed cross pipe  4 years ago
5out of 5stars

I wanted to order the cross pipe however I have read from previous reviews that the pipe leaks where the mesh catted area on the pipe is. Did you guys fix this problem? Please let me know thanks subieguy2121
  
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1 of 1 people found the following review helpful
As advertised... 5 years ago
5out of 5stars

Well made crossover pipe. Fit and finish are great. It's Grimmspeed soooo it's pretty damn good.
  
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QUESTIONS & ANSWERS

  • Q: Performance   Giovanni G11 months ago

    Does this make the exhaust any louder ?
    • 0 of 0 people found the following answer helpful

      A:  It might make it slightly louder, but you may not notice it to be honest. But this will certainly help with power and underhood temps for sure :)

      Rick C. @ RallySport Direct 11 months ago  
        
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  • Q: Ceramic coating  capilarybinkie5 years ago

    I was wondering if this was coated on the inside also?
  • Q: Header differences.  StarryBoar5 years ago

    So I would like to install the Tomei Experme Un-equal headers. Would this part be relevant? Or compatible? Thank you.
    • 0 of 1 people found the following answer helpful

      A:  This is designed to be installed to the stock header and would not be compatible with aftermarket headers. As majority of aftermarket headers will be a full assembly, and the stock is a 2 piece with the cross pipe between.

      Brady R @ RallySport Direct 5 years ago  
        
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This Part Fits

Subaru Impreza
2.5 GT Hatchback
2009 Subaru Impreza 2.5 GT Hatchback
2010 Subaru Impreza 2.5 GT Hatchback
2.5 GT Sedan
2009 Subaru Impreza 2.5 GT Sedan
2010 Subaru Impreza 2.5 GT Sedan
WRX
2002 Subaru Impreza WRX
2003 Subaru Impreza WRX
2004 Subaru Impreza WRX
2005 Subaru Impreza WRX
WRX Hatchback
2008 Subaru Impreza WRX Hatchback
2009 Subaru Impreza WRX Hatchback
2010 Subaru Impreza WRX Hatchback
2011 Subaru Impreza WRX Hatchback
2012 Subaru Impreza WRX Hatchback
2013 Subaru Impreza WRX Hatchback
2014 Subaru Impreza WRX Hatchback
WRX Limited Hatchback
2010 Subaru Impreza WRX Limited Hatchback
2011 Subaru Impreza WRX Limited Hatchback
2012 Subaru Impreza WRX Limited Hatchback
2013 Subaru Impreza WRX Limited Hatchback
2014 Subaru Impreza WRX Limited Hatchback
WRX Limited Sedan
2010 Subaru Impreza WRX Limited Sedan
2011 Subaru Impreza WRX Limited Sedan
2012 Subaru Impreza WRX Limited Sedan
2013 Subaru Impreza WRX Limited Sedan
2014 Subaru Impreza WRX Limited Sedan
WRX Premium Hatchback
2010 Subaru Impreza WRX Premium Hatchback
2011 Subaru Impreza WRX Premium Hatchback
2012 Subaru Impreza WRX Premium Hatchback
2013 Subaru Impreza WRX Premium Hatchback
2014 Subaru Impreza WRX Premium Hatchback
WRX Premium Sedan
2010 Subaru Impreza WRX Premium Sedan
2011 Subaru Impreza WRX Premium Sedan
2012 Subaru Impreza WRX Premium Sedan
2013 Subaru Impreza WRX Premium Sedan
2014 Subaru Impreza WRX Premium Sedan
WRX STI
2004 Subaru Impreza WRX STI
2005 Subaru Impreza WRX STI
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2007 Subaru Impreza WRX STI
WRX STI Hatchback
2008 Subaru Impreza WRX STI Hatchback
2009 Subaru Impreza WRX STI Hatchback
2010 Subaru Impreza WRX STI Hatchback
2011 Subaru Impreza WRX STI Hatchback
2012 Subaru Impreza WRX STI Hatchback
2013 Subaru Impreza WRX STI Hatchback
2014 Subaru Impreza WRX STI Hatchback
WRX STI Limited
2007 Subaru Impreza WRX STI Limited
WRX STI Limited Hatchback
2011 Subaru Impreza WRX STI Limited Hatchback
2012 Subaru Impreza WRX STI Limited Hatchback
2013 Subaru Impreza WRX STI Limited Hatchback
2014 Subaru Impreza WRX STI Limited Hatchback
WRX STI Limited Sedan
2011 Subaru Impreza WRX STI Limited Sedan
2012 Subaru Impreza WRX STI Limited Sedan
2013 Subaru Impreza WRX STI Limited Sedan
2014 Subaru Impreza WRX STI Limited Sedan
WRX STI Sedan
2011 Subaru Impreza WRX STI Sedan
2012 Subaru Impreza WRX STI Sedan
2013 Subaru Impreza WRX STI Sedan
2014 Subaru Impreza WRX STI Sedan
WRX STI Special Edition Hatchback
2010 Subaru Impreza WRX STI Special Edition Hatchback
WRX Sedan
2008 Subaru Impreza WRX Sedan
2009 Subaru Impreza WRX Sedan
2010 Subaru Impreza WRX Sedan
2011 Subaru Impreza WRX Sedan
2012 Subaru Impreza WRX Sedan
2013 Subaru Impreza WRX Sedan
2014 Subaru Impreza WRX Sedan