Carrier Bearings

Side by Side Source carries replacement carrier bearings and upgrade options engineered to outlast stock, plus maintenance accessories like remote grease lines that make it way easier to keep your bearings properly lubricated. Whether you're addressing a whining noise coming from under your Polaris RZR, upgrading to heavy-duty carrier bearings before installing that portal lift, or adding grease fittings to make maintenance actually doable, we've got carrier bearing solutions from manufacturers who understand that preventing failure beats dealing with a broken driveshaft in the middle of nowhere.

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Buyer's Guide for UTV Carrier Bearings: Helping You Shop!

Why UTV Bearings Fail (And What You Can Do About It)

Typically, your stock carrier bearings are going to come already sealed, with no way to add any more grease other than what was initially provided. In other words, once that grease inevitable breaks down from all the environmental stress, then you’re done! It usually starts out gradually. You might hear a soft hum or a whine at certain speeds, and over time, it will get louder (and vibration will enter the equation). Oftentimes, by the time you know something’s up, you’re already in the hole several hundred dollars.

If we had to name just one practice that would dramatically improve the life of your UTV bearing, it has to be greasing these things. Of course, when you’re running stock bearings that don’t have grease fittings, this can be a bit tough. Grab yourself a heavy-duty aftermarket carrier bearing, however, and you can get fresh grease in there, get the contamination out and keep your ride as smooth as possible.

Greasable vs. Sealed UTV Bearings: Making the Right Choice

Here's the eternal debate with carrier bearings: sealed or greasable? Sealed bearings come pre-packed with grease and have no provision for adding more. The advantage is they're completely maintenance-free until they fail. There’s no greasing schedule to remember, no fittings to damage, no possibility of over-greasing and blowing out seals. For casual riders who do basic trail riding and don't push their machines hard, sealed bearings can last a surprisingly long time. The downside is when they do start to go bad, replacement is your only option.

Greasable carrier bearings have zerk fittings that let you inject fresh grease, extending lifespan dramatically if you actually maintain them. The problem here is when real clashes with ideal. Many people either neglect to grease their bearings entirely, or in the best case scenario, they’ll grease them for a while and eventually fall out of the habit. If this sounds like you, then sealed might still be the best way to go.

Heavy-Duty Carrier Bearings for Modified Machines

If you're running larger tires, a lift kit, portal gears, or any combination of drivetrain modifications, stock carrier bearings are probably operating outside their design parameters. You definitely need heavy-duty in these cases.

The difference shows up immediately in bearing longevity. Where stock bearings might last 50-100 hours under modified machine conditions, quality heavy-duty units can deliver 200-300+ hours. The construction is just fundamentally more robust—thicker races, more and larger bearing balls, housings machined from billet aluminum instead of stamped steel. Some designs even include better sealing systems that keep contamination out more effectively.

For portal lift machines especially, heavy-duty carrier bearings aren't optional—they're mandatory. Portal gears create extreme driveshaft angles that put stress on carrier bearings that would destroy stock units in short order. Manufacturers like SuperATV specifically engineer portal-rated carrier bearings with geometry and materials designed to survive these conditions. Skimping on carrier bearings when you're dropping thousands on a portal lift is asking for expensive failures.

3 Top Selling UTV Carrier Bearing Brands

SuperATV dominates the heavy-duty carrier bearing market with greasable designs, rebuild kits, and remote grease line solutions that make maintenance actually practical.
Sandcraft offers innovative carrier bearing setups with integrated grease whip systems that bring maintenance access right up to your roll cage.
Quad Logic manufactures quality replacement carrier bearings that restore proper drivetrain function at competitive prices.

5 Top Selling UTV Carrier Bearing Products

Rebuild your carrier bearing instead of replacing the whole assembly using this Carrier Bearing Rebuild Kit by SuperATV, which includes everything you need to restore smooth, quiet operation.
Polaris RZR XP Turbo owners pushing serious power need this Heavy Duty Carrier Bearing by SuperATV, engineered with beefier construction that can handle modified drivetrain loads without premature failure.
Make carrier bearing maintenance way easier with this Remote Grease Line for Polaris Ranger Carrier Bearings by SuperATV, which relocates the grease fitting to a spot you can actually reach without tools.
RZR Gen 3 owners get ultimate maintenance convenience with this Carrier Bearing Grease Whip Combo by Sandcraft, featuring a grease line that runs right up to your roll cage where you can't ignore it.
Restore smooth driveline operation to your RZR 1000 affordably with this Prop Shaft Carrier Bearing by Quad Logic, delivering reliable performance at a price that won't hurt.

UTV Carrier Bearing Frequently Asked Questions

How often am I supposed to grease these bearings?

Twenty-five to gifty miles for normal riding, or half that often if you’re in muddy or wet conditions.

Can I convert my sealed carrier bearing to a greasable setup?

Usually not. Some rebuild kits convert sealed housings to greasable by adding fittings and modifying the housing, but this varies by application.

What’s with that whining nose, anyway?

This means your bearing surfaces are worn and running dry. Yes, you can technically ride on it, but consider your bearing’s days numbered from this point out!