MAXXISOff-RoadAdventure

MU521 Rear OE

Name: MU521 Rear OE Motorcycle Tires
Brand: MAXXIS
Rating: 7.8 (3 reviews)

OE-spec UTV/ATV rear tire built for mud clearance, heavy hauling, and real-world utility work — not for street motorcycles.

MTC7.8/10★★★★☆Off-Road · Utility / UTV

motorcycletireco.com

BrandMAXXIS

TypeOff-Road / Adventure

FitmentRear

Sizes3

Aggressive tall tread blocks with wide void channels chew through mud and eject debris to keep traction where you need it

Wide footprint delivers a generous contact patch purpose-built for heavy load hauling on rough terrain

6-ply carcass construction resists punctures and stands up to the abuse of daily utility use

Wear-optimized compound prioritizes long service life over peak grip — the right trade-off for utility applications

OE-validated fitment on select Polaris Ranger models means proven real-world performance right out of the box

Available in multiple sizes covering 12-inch and 14-inch UTV/ATV wheel fitments

Riders Also Considered

Mud-Terrain T/A® KM3 ATV/UTV

From $228

Select Size

Prices use MTC dealer formula · Load/speed index explained in the FAQ below

Fulfillment

Live pricing · Walk-in mount & balance available

🛞 Running a spoked wheel? Shop 12″ inner tubes →

Save below MSRPIn-stock · ships fastWalk-in install

MTC Rating

MTC Score

7.8/10

★★★★☆

Best suited for UTV and side-by-side owners who need a durable, mud-capable rear tire for work and trail use — not a motorcycle tire.

Performance

Dry Grip6.5

Wet Grip7.2

Street Manners4.0

Track Capability2.0

Mileage8.3

Value8.0

Best For

UTV Work Operator

If your side-by-side is a working machine — ranch chores, property maintenance, hauling equipment through mud and gravel — the MU521 was designed with you in mind. It clears debris aggressively, carries heavy loads without complaint, and holds up over the long haul.

Perfect Match

Recreational Trail Rider

Weekend trail riding on a UTV across mixed terrain? The MU521 handles it well. You get solid mud traction, good durability, and a practical price point — even if you're not out here chasing maximum performance numbers.

Great Match

Motorcycle Sport-Road Rider

If you came here looking for a sport-road tire for your street bike, the MU521 is not it. This is a UTV/ATV utility tire — wrong profile, wrong compound, wrong application. Stop by or call MTC at (714) 516-9059 and we'll point you to the right motorcycle tire for your ride.

Consider dedicated motorcycle sport-road tires

Full Size Chart & Part Numbers

Pos.	Size	Load/Speed	P/N	MFR Part #	UPC-A	Our Price / MSRP
RearOOS	27x11-12	—	0319-0365	TM00065600	4717784522371	$185.69$221.00Save $35
RearOOS	27x11R14	—	0319-0367	TM00140000	4717784520520	$225.22$268.00Save $43
RearOOS	29x11R14	—	0319-0369	TM00256600	4717784521763	$255.44$304.00Save $49

Frequently Asked

No — and we'd strongly advise against it. The MU521 is engineered specifically for ATVs and side-by-side utility vehicles. It has no street-appropriate speed rating, the tread profile won't support motorcycle cornering dynamics, and the compound isn't optimized for pavement. For street motorcycle tires, call us at (714) 516-9059 and we'll sort you out.

This is where the MU521 earns its reputation. The tall tread blocks and open void pattern are specifically designed to clear mud and maintain forward bite in wet, loose conditions. It's part of why Polaris chose it as OE equipment on Ranger models that regularly see variable terrain.

The 6-ply construction and wide contact patch are built for serious utility work — hauling gear, equipment, and passengers on your UTV. Exact load ratings vary by size, so check Maxxis's published specs for your specific fitment to confirm it matches your application.

Tread life is one of this tire's strongest suits. The compound is tuned for wear durability rather than outright grip, and real-world utility users regularly get solid mileage out of a set in mixed-use conditions. Actual life depends on terrain, load, and how hard you work the machine.

It's technically possible, but running a matched set of four MU521s will give you the most predictable handling and even wear across all four corners. Mixing models can introduce inconsistencies in traction response — worth avoiding if you're hauling heavy loads on rough ground.

Fair question — it's a catalog classification issue, not a reflection of what this tire actually is. The MU521 is a UTV/ATV utility tire, full stop. Motorcycle riders browsing sport-road options should look elsewhere; we carry a full range of dedicated motorcycle rubber and can help you find the right fit.

Maxxis MU521 Rear OE Tires in Orange County — MTC

Motorcycle Tire Center in Orange, CA stocks the Maxxis MU521 Rear OE for UTV and side-by-side owners across Orange County — from Anaheim and Fullerton to Mission Viejo and Huntington Beach. If your Polaris Ranger or similar utility vehicle does real work in mud, gravel, and heavy-load conditions, the MU521's 6-ply carcass, aggressive tread block design, and OE-validated construction make it a straightforward, durable choice. We carry it below MSRP, and our team can answer fitment questions by phone at (714) 516-9059.

One important note for motorcycle riders who land on this page: the MU521 is an ATV/UTV tire, not a street motorcycle tire. If you're in Irvine, Newport Beach, or anywhere else in the OC and need a sport, touring, cruiser, or adventure tire for your bike, we've got you covered on that front too — just give us a call or walk in.

MTC offers walk-in mount and balance service at our Orange, CA location — $69 mount, $9.95 balance, and $3.50 disposal per tire, with no appointment needed. Whether you're gearing up a UTV for ranch season or need help selecting the right tire for any two-wheeled machine in your garage, our team is here to help. Reach us at (714) 516-9059.

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View tire →8.2

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Best for

Trail ExplorerWeekend WarriorMud Specialist

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View tire →8.2

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View tire →8.2

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OE-grade front tire built for Polaris Ranger and utility SxS platforms — tough, mud-clearing, and season-ready for hard-working trail operators.

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View tire →7.8

MAXXIS MU511 Front OE

OE-grade front tire built for Polaris Ranger and utility SxS platforms — tough, mud-clearing, and season-ready for hard-working trail operators.

Best suited to Polaris Ranger operators and utility SxS riders who face consistent mud, trail debris, and season-long hard use.

Best for

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