Dunlop Geomax MX34 Front Tire – 80/100-21 M/C 51M TT

Name: Dunlop Geomax MX34 Front Tire 80/100-21 51M TT | WyldPerformance
SKU: dun45273505
Price: 144.95 USD
Availability: InStock

SKU: dun45273505

$144.95

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Category: Tires & Wheels

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DUN Geomax MX34 — Front Tire · 80/100-21 M/C 51M TT

A front tire that gives you sure steering and consistent bite when the track breaks down. The Geomax MX34 sharpens front-end feel with an updated carcass and tread that cut through soft and loamy soil, then hold their shape through long motos. Made by Dunlop, the MX34 builds on the Geomax line with improved block geometry, mud-evacuation, and a compound tuned for traction without sacrificing life.

Compatibility

Size / Position: 80/100-21 — Front tire (fits standard 21" front wheels on full-size motocross bikes).
Construction: Tube Type (TT) / Bias-ply.
Load / Speed: 51 (max 195 kg / 430 lbs), M (up to 130 km/h / 81 mph).
Part number / identifiers found in trade listings: Art. 640370 / EAN 4038526415875.
Shipping carton: Box 1 dims: 28 x 28 x 3.5 in (single-tire pack). (You supplied the box dims.)

Installation

This MX34 in 80/100-21 is a tube-type front — fit with a properly sized inner tube and inspect the rim and rim-lock before mounting. Start with a fresh tube whenever possible, seat the bead evenly, and check for pinches or twists in the tube as you inflate. For motocross use on soft/intermediate tracks, many riders and tech guides use lower front pressures than street tires — manufacturer guidance and industry testing suggest roughly the 12–14 psi range for intermediate/soft track work, but dial in pressure for your weight, track, and rim type. When in doubt, have a shop mount and balance the wheel.

Who This Is For

Riders who race or train on soft to intermediate motocross tracks and want a predictable, nimble front end.
Anyone who values a front tire that tracks ruts and evacuates mud without feeling vague under braking.
Weekend club racers and private-track testers who want consistent lap-to-lap steering and traction.

What’s changed vs older Geomax fronts

Dunlop revised the carcass material and block layout for improved damping and longer consistent performance, plus mud-evacuation features and a new compound aimed at better bite without overly rapid wear. These changes make the MX34 more forgiving in evolving track conditions.

Quick Specs

Manufacturer: Dunlop
Model: Geomax MX34 (front)
Size: 80/100-21
Load/Speed: 51M
Construction: Bias / Tube Type (TT)
Category: Motocross / Soft-Intermediate terrain
Manufacturer part #: 640370 (trade listings)
Box dims: 28 x 28 x 3.5 in (single tire pack).

FAQs Will this fit my 21" front wheel on a 250/450? Yes — 80/100-21 is a common front size for full-size motocross bikes. Check your OEM tire stamp to confirm. Is the MX34 tubeless or tube-type? This size is tube-type (TT) — run an inner tube. What terrain is it best on? Soft to intermediate / loamy tracks — it’s tuned for bite and mud evacuation while keeping good feel in ruts. Can I race with it? Yes. It’s designed for competitive motocross use and long motos where consistency matters. Any mounting tips? Use a new tube, check rim and rim-lock, seat the bead evenly, and have a shop balance it if you’re chasing consistent handling. How different is it from the MX33? The MX34 updates the carcass and block design for better damping and more consistent traction — you’ll feel more controlled steering as the track breaks down.

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Dunlop Geomax MX34 Front Tire – 80/100-21 M/C 51M TT

PRODUCT DETAILS