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ProTaper MXT 04 Motorcycle Tire

SKU: ptr023300

Price range: $79.99 through $99.99

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Tire Size	Front Tire 80/100-21, Rear Tire 100/90-19, Rear Tire 110/100-18, Rear Tire 110/90-19, Rear Tire 120/80-19

ProTaper MXT 04 Off-Road Tire

ProTaper has spent years building handlebars, grips, and controls that serious off-road riders trust. The MXT 04 is their first tire — and it rides like they actually thought it through before putting their name on it. This is a bias-ply MX and off-road tire built specifically for intermediate to hard terrain. Hard pack, rocky trail, mixed enduro stages — that's where this tire was designed to work. It's not trying to be a soft-terrain mud tire. It knows what it is, and it does it well. The tread blocks are molded asymmetrically, which gives you real stability when the bike is loaded up hard — whether you're on the brakes or getting back on the gas. The knob and groove pattern adds to that, keeping braking predictable and your front or rear wheel hooked up through the kind of variable intermediate terrain that usually exposes a cheap tire fast. All variants are tube-type construction. You'll need a tube.

Compatibility

This listing covers the full MXT 04 lineup — one front and four rear sizes: Front 80/100-21 (PTR023300) — Fits the standard 21-inch front wheel on most full-size MX and enduro bikes. 80mm wide, bias construction, tube type. Rear — 19-inch Three options for bikes running a 19-inch rear wheel:

100/90-19 — narrower profile, lighter feel
110/90-19 — mid-width, common on many modern enduro platforms
120/80-19 — wider footprint, lower profile

Rear — 18-inch 110/100-18 — for bikes running an 18-inch rear. Taller sidewall profile than the 110/90. All sizes share the same bias construction and MX/off-road designation. To pick the right rear, check the size printed on your current tire's sidewall — it'll match one of the options above. Rim width compatibility matters too, so confirm your rim spec before ordering if you're unsure.

Installation

Standard tire irons and a bead seating tool handle the job. Nothing complicated about the mount. Because all MXT 04 tires are tube-type, take care when seating the tube inside the tire before you set the bead. A pinched tube is the most common install mistake and it's entirely avoidable if you go slowly. Work the bead evenly around the rim and don't rush the inflation. If your existing tube is worn, replace it now. There's no good reason to mount a fresh tire over a tube that's already seen hard use. Plan for 20 to 30 miles of normal riding before you push the tire hard. The tread surface needs a bit of break-in time before it reaches full grip.

Who This Is For

Riders who spend most of their time on firm ground — hardpack trails, rocky enduro courses, intermediate off-road terrain that doesn't churn up soft and muddy. The MXT 04 suits enduro racers, competitive off-road riders, and trail riders who want a tire that holds up and performs consistently rather than wearing out fast or behaving unpredictably on harder terrain. It's also a solid choice if you're replacing worn OEM rubber and want something that actually performs rather than just fits. Worth being straight about: this is not the right tire for deep mud or consistently soft terrain. If that's your usual riding condition, look at a purpose-built soft-terrain tire. The MXT 04 was engineered for intermediate to hard ground, and that's where it earns its keep.

Key Benefits

Asymmetric block molding — Stability under hard braking and acceleration, not just grip in a straight line. The asymmetric layout distributes load more effectively when the tire is really working. Knob and groove tread — Consistent bite and braking response through variable intermediate terrain where surface traction shifts constantly. Bias-ply construction — Predictable flex and feel across the full size range. Well-suited to off-road and enduro riding where sidewall compliance matters. Five sizes, one tire line — Front and rear covered across 18-inch and 19-inch rear wheels. Easy to spec a full setup without mixing brands. ProTaper backing — A brand with a long track record in performance off-road components. Tires are new for them, same standards apply.

FAQs

Do I need to buy a tube separately? Yes. Every size in the MXT 04 lineup is tube-type — a tube is required. Grab a heavy-duty tube while you're at it. Running a standard tube inside an off-road tire on hard terrain isn't a great idea long-term. How do I know which rear size fits my bike? Look at the sidewall of the tire currently on your bike. The size is printed right there — match it to one of the options above. If you're unsure about rim width compatibility, check your owner's manual or ask your dealer. What's the difference between the 110/90-19 and 110/100-18? Two things: wheel diameter and sidewall profile. The 110/90-19 is for a 19-inch rim with a lower profile sidewall. The 110/100-18 is for an 18-inch rim with a taller sidewall. They're not interchangeable — make sure you're ordering for the correct wheel size. Is the MXT 04 suited for enduro racing or just trail riding? Both. It was built with off-road racing in mind. The tread design and block layout are there to perform under race conditions on intermediate to hard terrain, not just casual weekend rides. Can I run MXT 04 front and rear together? Yes, and it makes sense to. The 80/100-21 front pairs naturally with any of the four rear sizes. Just confirm the rear size matches your wheel diameter — 18-inch or 19-inch. How does this compare to the ProTaper SMX 04? The SMX 04 is ProTaper's motocross tire for soft-to-intermediate terrain. The MXT 04 is the off-road and enduro option for intermediate to hard terrain. Different tire, different job. If you mostly ride on firm ground, MXT 04. If you're in soft, loamy conditions more often, SMX 04. How long should I expect these tires to last? It depends on terrain and riding intensity. Hard terrain is generally easier on rubber than aggressive soft-terrain riding. The MXT 04 was built for durability, but inspect your knobs regularly. Once they start rounding off noticeably, it's time for a fresh set.

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ProTaper MXT 04 Motorcycle Tire

PRODUCT DETAILS