Results 1 to 7 of 7
  1. #1

    Riva Pro Series Heads

    Does anyone have any experience with these heads? I have a set for my GP1300R that have just been sitting for the last year and I was thinking about putting them on. Anything wrong with these things?

  2. #2
    No problems with my 41cc's
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	picture_046_142.jpg 
Views:	62 
Size:	56.0 KB 
ID:	5876  

  3. #3
    When Travis built me a stock motor, that was the only performance part he put on.

  4. #4


    sounds great. what compression do the 41cc domes give you on that 1200? riva offers the 48cc domes on the 1300 and that's it. they have blanks but is 48cc good enough? or should i try something a little more aggressive? i don't mind running better gas, as in 108 or something, but not if it doesn't give any sort of performance increase. i believe kerry told me once that it wasn't necessary, so i'm assuming a 150 psi head w/ 93 is good enough.

  5. #5
    ABBOTT's Avatar
    Join Date
    Jul 2005
    Birmingham, AL / Lay Lake
    93 pump gas should be good all the way to 160psi.

  6. #6


    thanks abbott. does anyone know what size domes you need for 160 psi on a 1300? riva sells the 48cc domes and i think they yield about 145-150 psi. then they have blanks, which i'm assuming they can machine.

  7. #7


    well i got the 48cc domes. the riva rep said they were good for 150 psi. he said the 43cc domes (which they don't have and will not carry any more) were good for 155 psi. i guess it's as good as i'll get on pump gas. we'll see!

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. WTB Riva 41cc pro series heads & umi steering
    By Danno76 in forum Yamaha Classifieds
    Replies: 0
    Last Post: 10-04-2009, 03:47 PM
  2. riva pro series heads
    By billy's gpr in forum Yamaha PWC Performance (2-stroke)
    Replies: 3
    Last Post: 09-18-2007, 04:34 PM
  3. Riva Pro series head
    By joeblo in forum Yamaha PWC Performance (2-stroke)
    Replies: 0
    Last Post: 08-27-2006, 05:34 PM
  4. riva pro-series blockoffs
    By rxpblast in forum 4-Tec Performance
    Replies: 5
    Last Post: 01-21-2006, 05:13 PM
  5. Riva Pro-Series OPAS Block-Off Kits
    By way2fast in forum 4-Tec Performance
    Replies: 65
    Last Post: 08-07-2005, 05:04 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