Home › Forums › Viper Competition Coupe/ACR-X/GTS-R › ACR X brake ducts and racing mods

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    • XSnake
      Member
      November 25, 2019 at 4:45 am
      Post count: 2515
      #512375

      You will remove the stock ducting and have to purchase the X ducting that mounts to the splitter. You will also need the ducting on the caliper.

    • LATAMUD
      Member
      November 25, 2019 at 9:30 am
      Post count: 802
      #512398

      XSnake said:
      You will remove the stock ducting and have to purchase the X ducting that mounts to the splitter. You will also need the ducting on the caliper.

      Understood, I have all that. Do the stock Viper duct holes get plugged? Under the bumper cover, where the stock ducts go, there are holes, where air can pass into the bumper. Does the X have these holes plugged, or does it rely on the rear edge of the splitter to seal against the fender apron?

      These holes are what the stock ducts slip over. On your X, can you reach through them or are they plugged?
      E5E2831D-E68D-4C8E-B353-6643A133AC3D.jpg
      Attachment not available

      Also, anyone looking to do the X brake duct mod, the bump stops on the steering shaft need to be widened to reduce the risk of the tire rubbing the hose. I found 1-3/4 ID split collars at 1/2” wide and added then inboard of the stock stops. This nets a loss of 1/4 turn of the steering wheel per side. A reduction of turning radius.

    • LATAMUD
      Member
      November 29, 2019 at 9:12 pm
      Post count: 802
      #512874

      If anyone near an X is reading this, can someone please confirm/deny are these ports plugged?
      2-plug-or-not-2-plug.jpg

      Took a note from Tom Francis on the closeout panel. It gets hot in Kuwait.
      closeout.jpg

    • LATAMUD
      Member
      December 7, 2019 at 3:55 am
      Post count: 802
      #513291

      Track day this Wednesday. I had this made at a local shop. Not easy to come by in Kuwait.
      IMG-20191207-WA0002.jpg

    • 1of1TA1.0
      Member
      December 7, 2019 at 10:59 am
      Post count: 379
      #513314

      No they are not removed

      DSCN0732-2.jpg

    • LATAMUD
      Member
      December 8, 2019 at 1:24 am
      Post count: 802
      #513367

      1of1TA1.0 said:
      No they are not removed

      THANK YOU!

    • LATAMUD
      Member
      December 8, 2019 at 1:31 pm
      Post count: 802
      #513402

      It’s Carbon fiber over fiberglass copy of an ACR splitter, a little heavier than the full cf piece. For $600 I’m not complaining.

      6622B1A6-68AD-4010-B4BF-416C67AD6C0D.jpg

    • 1of1TA1.0
      Member
      December 8, 2019 at 3:40 pm
      Post count: 379
      #513407

      Looks pretty good actually!

    • Shannon Whitehead
      Keymaster
      June 11, 2025 at 3:08 am
      Post count: 274799
      #34620

      I’m adding the ACR-X ducting to a 2008 Coupe, will be cutting the lower lip of the bumper cover and adding a splitter. Do the stock Viper duct holes get plugged? If so can I just cover with a flat plate? I heard the stock ducts cause the front to lift. Yes, I own an X but not home to look at it, and haven’t owned it long enough to memorize all the differences on it.

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