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Engine
As an RZR 4 owner, you may have experienced your fair share of check engine lights. While sometimes these lights go away on their own, other times they may indicate problems with secondary or tertiary engine components. If you see codes such as 65590, 65591, and 65592, your dealer may recommend replacing the fuel pump. However, it's important to note that not all dealers have your best interests in mind. Instead, take a look at your machine's belt as slippage can cause cylinder misfires that can leave you stranded. If your belt is fine, false engine codes may be the issue, which can be solved with ECM work. Misfire detection sensors may be too sensitive from the factory, but a little computer work can desensitize the knock sensors and improve overall performance. Don't let engine codes ruin your ride, take a closer look before heading to the dealer.
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Some riders looking to increase performance have reached out to us asking about engine builds and aftermarket engines for the RZR 4. When you start to delve into engine replacements, though, you better have a lot of skill or a lot of money -- and realistically you're probably going to need both. We've seen RCV, Rs1, ORB, FCR, KB3, PRP, TQR, and Keller engines being used in the RZR 4. We've also seen 1000 and 1100cc gsxr engines, Busa engines, and even a 1100 turbo snowmobile motor work in an RZR. Some are made for higher top speeds, while others provide faster takeoffs. But unless you're a racer, most riders will find that the stock RZR 4 engine is sufficient for most types of riding. If you're curious about what type of engine you can put in your RZR 4 or want to learn more about / buy engine parts, components, or rebuild kits, give us a holler and we'll sort you out.
