Results 1 to 7 of 7
  1. #1

    Question on Riva Free Flow exhaust for GP1200R

    I found these on the Riva website (RY1620) and they seem like a cheap upgrade that I can do with little work. Will my carbs need adjusted if this is installed? Meaning will I need to have the carbs rejetted for the better flowing exhaust? I have 2 GPR's and if this is an easy part I can do both to get better performance. Thanks in advance.


  2. #2
    WATER WOODY's Avatar
    Join Date
    Aug 2005
    Location
    Minden, Nevada, United States
    Posts
    10,664
    +1
    11
    Welcome to GH. No rejetting required but i recommend stock carbs to be rejetting regardless,especially if they have alot of hours on them.

  3. #3
    Yellow93's Avatar
    Join Date
    Apr 2006
    Location
    San Antonio, Texas, United States
    Posts
    2,429
    +1
    122
    Its an easy upgrade to do but will only slow you down unless you have mods done to your ski to NEED the freeflow such as a higher compression head or a jetworks kit. Otherwise all your money did was make the ski louder!

  4. #4

    Join Date
    Jun 2008
    Location
    St Clair Shores, MI
    Posts
    258
    What is the free flow exhaust? On Riva's website it just looks like a tube. What does this replace?

    On my ski there's a section of PVC in place of the "water tank" in the exhaust under the battery box. Is this the equivalent of the "free flow" exhaust? It was like that when I got it and I never gave it a second look until I was reassembling it last night after doing the pump tunnel reinforcement. I was checking the manual and it showed a "water tank" after the muffler and before the exit through the hull. This isn't there on mine, there's just a straight section of PVC in its place.

  5. #5
    enforcer's Avatar
    Join Date
    Mar 2006
    Location
    San Antonio, Tx.
    Posts
    686
    +1
    22
    Quote Originally Posted by sleeper_dave View Post
    What is the free flow exhaust? On Riva's website it just looks like a tube. What does this replace?

    On my ski there's a section of PVC in place of the "water tank" in the exhaust under the battery box. Is this the equivalent of the "free flow" exhaust? It was like that when I got it and I never gave it a second look until I was reassembling it last night after doing the pump tunnel reinforcement. I was checking the manual and it showed a "water tank" after the muffler and before the exit through the hull. This isn't there on mine, there's just a straight section of PVC in its place.
    Yes the PVC pipe is a home brew redneck special that is supposed to take the place of the free flow.If your ski is basically stock I would put the stock sound suppression back on if you can get or have one.the free flow is designed to minimize and/or prevent detonation.

  6. #6

    Join Date
    Jun 2008
    Location
    St Clair Shores, MI
    Posts
    258
    I just swapped over to a 1300 motor which supposedly has some mild porting and milled cylinders. Seller says to expect 150ish psi. Flame arrestors, premix, and d plate are the only other mods. I think i'll leave it, just to save hunting down a stock waterbox. But I would kind of prefer to have it a little quieter. On a rough day I run hard, then have to slow down to 25-30 mph to relax a bit and right at that speed it's noisy as hell with an annoying drone.

  7. #7
    mrbtd's Avatar
    Join Date
    Jul 2005
    Location
    Lindenhurst, Illinois, United States
    Posts
    4,309
    +1
    2
    Quote Originally Posted by sleeper_dave View Post
    . On a rough day I run hard, then have to slow down to 25-30 mph to relax a bit and right at that speed it's noisy as hell with an annoying drone.
    Yep

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. FS - Parts Free flow exhaust for GP1200r , GP1300R
    By YudLuz2 in forum Yamaha Classifieds
    Replies: 5
    Last Post: 10-24-2012, 09:53 PM
  2. FS FOR SALE RIVA FREE FLOW EXHAUST for SHO
    By 02gpR in forum Yamaha Classifieds
    Replies: 12
    Last Post: 08-05-2010, 08:54 AM
  3. New Riva Free Flow Exhaust For Rxt
    By Pinoy in forum 4-Tec Performance
    Replies: 24
    Last Post: 04-19-2008, 09:39 AM
  4. RIVA free flow exhaust for the SHO are now available
    By Green Hulk in forum Yamaha PWC Performance (4-stroke)
    Replies: 12
    Last Post: 03-21-2008, 10:09 PM
  5. riva free flow exhaust for 07 rxp
    By mbaseball3 in forum 4-Tec Performance
    Replies: 1
    Last Post: 06-25-2007, 02:26 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •