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  1. #1
    Site Admin Green Hulk's Avatar
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    New R&D parts and kits for the Kawasaki 300/310 skis

    R & D Ultra 300/310 16 Supercharger Pulley Wheel/Ratio .970 to 1 (16-17 LBS Boost)

    The R&D Racing “High Boost” Supercharger Pulley Wheel’s for the 300X/310X will clearly deliver an impressive boost in torque and overall...
    611-30016 $349.95

    R & D Ultra 300/310 Supercharger Pulley Wheel/Ratio 1.021 to 1 (18-19 LBS Boost)

    The R&D Racing “High Boost” Supercharger Pulley Wheel’s for the 300X/310X will clearly deliver an impressive boost in torque and overall...
    611-30018 $349.95

    R & D Ultra 310 Stage 1 Engine Kit with RDP-16 Pound Supercharger Pulley Wheel

    Stock Ultra 310X Avg. speed 65.5-66 mph @ 7600-7700 RPM (after speed limiter engagement) Stage 1 Engine Kit w/RDP-16 S/C Pulley 76 mph @ 7950-8000...
    611-31691 $1,099.90

    R & D Ultra 310 Stage 2 Engine Kit with RDP-16 Supercharger Pulley Wheel

    STOCK ULTRA 310X AVG. SPEED 65.5-66 mph @ 7600-7700 RPM (after speed limiter engagement) STAGE 2 PERFORMANCE KIT 77 mph @ 8100-8150 RPM The R&D Ultra...
    611-31693 $1,299.85

    R & D Ultra 310 Stage 3 Engine Kit with RDP-18 Supercharger Pulley Wheel

    STOCK ULTRA 310X AVG. SPEED 65.5-66 mph @ 7600-7700 RPM (after speed limiter engagement) STAGE 3 PERFORMANCE KIT 78 Plus mph @ 8200-8300 RPM The R&D...
    611-31800 $1,599.80



  2. #2
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    Hmmmmmmmmmm

  3. #3
    "just sayin".. jetdave56's Avatar
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    Christmas already !!?..And it's only August..

    Jeez if this would of came out winter/Spring while I was changing my SC belt ...

  4. #4
    Take the time to smile sirbreaksalot's Avatar
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    here we go again !!!!!!!!!!!!!

    349 for a little bit of machine alloy

    pftttt

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  6. #5
    Speed Junkie UnleashedBeast's Avatar
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    You can tell few make pullies for the TVS on an Ultra.

    The Shelby GT500 TVS pullies are 1/3rd the cost.

  7. #6
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    Ill just assume that some of those are smaller pulley wheel and larger idler.... cant get too small without it.

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  9. #7
    mod addict's Avatar
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    Very cool.
    I was told even if the supercharger was spun higher it still wouldn't make more boost.
    I was also told that the motor had issues with blow by at high rpm.
    Can't wait for results of buyers.

  10. #8
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    they'll make 17psi tops, maybe a 1-2 more depending on weather after that they're heat pumps. it will hit harder from the bottom thats a guarantee..... keep it at or around 8300 and oil shouldnt be an issue

  11. #9
    mod addict's Avatar
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    I would think with the R&D stage 3 setup with other jet pump / rideplate / impeller mods this combo should produce a ski with 80+ MPH capability.

  12. #10
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    80 is a pretty large number for an ultra hull.... nose way up in the sky it may do it with all that

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