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POLARIS RZR 800 REBUILD KIT

A worn engine does not always mean replacing the whole powertrain. If your Polaris RZR 800 side-by-side is showing lower compression, oil use, engine noise, or performance loss, rebuilding can be a smart way to extend the life of the UTV you already trust.

This rebuild kit brings together the major internal components needed for a more complete engine refresh while helping remove the guesswork of sourcing parts individually. Backed by a 1-year warranty and built for 2011–2017 RZR and Ranger 800 models, this kit helps DIY builders, repair shops, and riders move their rebuild forward with confidence.

  • Sale!
    Polaris 800 bottom end rebuild kit 2004–2012 including hd twin crankshaft, main bearings, seals, and complete gasket kit
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    Polaris RZR/Ranger/Sportsman 800 (2004-2012 ) Complete Bottom End Rebuild Kit

     Original price was: $1,081.49.Current price is: $757.04.
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    • Answers Before Starting Your RZR 800 Engine Rebuild

    Who is this rebuild kit designed for?

    This kit is a strong fit for DIY mechanics, repair shops, and owners rebuilding a worn RZR 800 or Ranger 800 engine who want major internal components grouped into one package instead of sourcing parts separately.

    How do I know if my RZR 800 may need a rebuild kit?

    Common signs include reduced power, increased oil use, abnormal engine noise, poor compression results, smoke, or an engine that no longer performs the way it used to.

    What support is available if I am unsure which kit to choose?

    Not every rebuild starts the same way. Our team can help compare rebuild levels, discuss symptoms, and point you toward the right parts path before ordering.

    Does this kit include warranty coverage?

    Yes. REV6 backs rebuild kits with a 1-year warranty to help provide additional confidence during your engine project

    Is there anything I should do after installing new engine components?

    Proper break-in matters. New camshaft and valvetrain components benefit from correct startup procedures, RPM variation, and break-in practices to support long-term performance.
    Related RZR 800 Parts
    Call or Text Now 801-489-8697

    KNOW YOUR RZR 800 KIT

    Refresh Your RZR 800 Engine the Right Way

    If your RZR 800 is starting to lose power, smoke, or make noise, it shouldn’t—this complete rebuild kit gives you everything you need to bring it back to life. Designed to meet or exceed OEM specs, this kit is tough enough for trail riders, racers, and weekend explorers alike.

    Every component is hand-picked by the team at Rev6 for reliability, performance, and fitment. Whether you’re doing a full engine refresh or replacing worn parts before they fail, this kit’s got your back.

    🛠️ Contact Us with install questions
    🛡️ View Warranty Policy
    📚 FAQ – Know before you wrench📲 Follow for tips, builds, and off-road mayhem:
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    We are so confident in our craftsmanship that each Polaris RZR 800 rebuild kit comes with a 1-year warranty. We offer free shipping inside the 48 continuous states and Canada.

    WORK WITH THE BEST WHEN IT COMES TO YOUR POLARIS RZR 800 REBUILD KIT.

    The REV6 Powersports team standing side by side in our REV6 shop in Utah

    WE BUILD BETTER RZR 800 REBUILD KITS!

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    Call or Text Now 801-489-8697
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    • 180 West 900 North
      Springville, UT 84663

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