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  1. #1
    Youngs Point
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    Youngs Point, Ontario, Canada on the awesome TrentSevern Waterway
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    Riva vs Rotax Racing kits which to use ?

    I spent some time looking at performance kits and reading this forum, there is a wealth of knowledge out there and you guys are great for achieving the speeds that you are. I posted a thread a few weeks ago and recieved lots of good feedback regarding modifying my stock 2004 rxp. I have some questions, the Riva stage II kit covers a bit of everything, prop/intake grate/intake/exhaust mods etc, where the RR Stage II kit is strictly mods to the engine and supposed to give +45hp according to racetech ( www.rotaxracing.ca ) which I found surfing the net last week. I am now wondering is if anybody has any experience with the rr stage II kit, and what can be expected by blending this kit with the riva stage II by adding the intakegrate/exhaust/prop/wedge etc from the riva kit? It sounds like the way to go but I am not sure.
    Anyhelp would be appreaciated as I am still trying to decide which mods to install this coming winter to get into the low to mid 80's for next summer.


  2. #2
    EZ Dock of Long Island Shibby1485's Avatar
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    May 2005
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    Long Island, NY
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    the rotax stage 2 kit is a ported cylinder head if u want to go that route, but there's plenty of other substitutes...

    i think most would agree the best plan of attack is this... don't get a complete riva stage 2 bc some of the components are useless with the latest 4-tec advancements (ie the Vortech SC Impeller) ... none of the kits are the BEST of all worlds, but a blend of them... here's my recommendations:

    Make your own 4" intake
    Rotax Thru-hull exhaust
    Riva Intercooler
    Riva Intake Grate
    Rotax Racing ECU
    SOLAS prop (pitch depending on what mods you choose)
    Race Engineering OPAS Block offs

    If you want optimal top speed and reliability, you need to address the stock valvetrain to turn more RPMs in the 8500+ range.

    then you have 3 superchargers at this time to choose from:

    Rotax Racing High Boost Impeller (appx 9.5 psi)
    Riva Stage 3 SC (not yet available to public)
    B-kit (expensive!!! but BIG power 13+ psi)

    pick ur budget, and pick ur top speed goal

  3. #3
    RustyXP's Avatar
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    Sep 2006
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    Rochester NY and 1000 islands Canada (summer time)
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    just reading that parts list makes my mouth water.

  4. #4
    Will work on YOUR ski for FREE! GeoRXT's Avatar
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    Quote Originally Posted by RustyXP
    just reading that parts list makes my mouth water.
    Same here with the B-kit....

  5. #5
    The RR kits have recently been upgraded:

    www.easyrider.lu

    This is the official distributor of RR kits (I've been given this name by ROTAX aftermarket dpt. directly). They are very kind and work closely with Franco Dettori.

    Now:
    Kit A is +40HP
    Kit B is +65HP
    FULL MOTOR 315HP

    Have a look to their web-site and to tothe KIT's pictures.

    Ciao Ciao

  6. #6
    want 2 go fast a good mix riva cold air intake mac boost intercooler riva intake grate rotax racing sc impeller 42 lb injecters and steel washers r&e opas block off riva sponsons green hulk solas prop with his 14/20 pitch this is on my winter list if u want the R's rotax racing ecu & pitch the prop for it forget the wedge

  7. #7
    Moderator two2curupt's Avatar
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    Quote Originally Posted by GIONNIK
    The RR kits have recently been upgraded:

    www.easyrider.lu

    This is the official distributor of RR kits (I've been given this name by ROTAX aftermarket dpt. directly). They are very kind and work closely with Franco Dettori.

    Now:
    Kit A is +40HP
    Kit B is +65HP
    FULL MOTOR 315HP

    Have a look to their web-site and to tothe KIT's pictures.

    Ciao Ciao
    RACE TECH Is a North American distributer for "easy Rider" and "Rotax Racing" products and Mark Underwood the owner is also is in very close contacts with Franco Dettori..
    In fact Rotax Racing will have a NICE showcase of products on display at the world finals...I believe they will be beside the sea-doo booth...
    All of the Rotax Racing products are available in Jerry's online store...
    At VERY competitive rates!!

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