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  1. #1
    Steve STSPERFORMANCE's Avatar
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    Question riva vs. ferrea valvetrain which is better?

    Trying to decide which one or just go with Les retainers. Thoughts? Comments?
    Running Riva ecu...


  2. #2
    MSRXP's Avatar
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    Preference really. Ferrea makes great stuff.

  3. #3
    Eric Ocman's Avatar
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    People have had failure lately running just retainers. Imo full riva valvetrain. Glad I spent the money now.

  4. #4
    Orlando Shark's Avatar
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    Riva uses Ferrea for their valvetrain upgrade. I would definitely spend the extra bucks and get the full spring and retainer combo. If you upgrade to more rpms in the future you can always use the same springs all the way till about 9K. RPMS. Many run at that RPM and more without any problems.

  5. #5
    Work Harder, Millions on Wellfare Depend On Us! ultramaxracing05's Avatar
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    Ferreas. No problems so. far high quality parts

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