Motocross tyre DUNLOP GEOMAX MX34 F 80/100-21 M/C NHS 51M TT front

DUNLOP offers this motocross tyre. A motocross tyre grips thanks to its knobs, blocks of rubber that dig into the dirt to drive, brake and turn the bike.

Why choose a tyre suited to your ground?

The benefits:

• More drive in the slop: a soft-terrain tyre (mud, sand, loose dirt) has tall, widely spaced knobs that bite and shed the mud, but it wears quickly on hard ground.
• More grip and longer life on dry ground: a hard-terrain tyre has lower, more closely spaced knobs, but it clogs up faster in mud.
• An intermediate tyre is the most versatile compromise: the right choice if you ride on varied ground.

Why choose DUNLOP?

DUNLOP is named after John Boyd Dunlop, who developed the first practical pneumatic tyre in Belfast in 1888. Off-road, riders on Dunlop tyres won the AMA Supercross and Motocross championships in the USA 14 years in a row, from 2010 to 2023.

When should you replace the tyre?

Rounded, split or torn knobs, or cracked or cut sidewalls: it needs replacing. In racing, it is changed as soon as the knob edges are no longer sharp; for leisure riding, at the latest when the knobs have lost about half their height. The rear wears faster than the front, and a tyre stored for several years hardens, even if it has never been ridden.

Specifications and fitting tips

• Size: 80/100-21: 80 mm wide, sidewall height 100% of the width, 21-inch rim, front
• Load and speed: load 51 (195 kg max per tyre), speed M < 130 km/h
• Fitting: with an inner tube or mousse (TT), bias (X-Ply)
• Terrain: intermediate, soft and mud
• Approval: NHS, off-road use only
• Manufacturer part number: 640370

Cross-Mania tip: Follow the rotation arrow on the sidewall, fit it with mounting paste and a new inner tube (or a mousse), then set the pressure cold.

Also needed with this part

• Inner tube : MICHELIN · KENDA
• Tyre fitting and repair : KITE 20.761.0.BL · KITE 20.762.0.BL

Compatibility

Choose the same size as the original tyre: it is moulded on the sidewall of your current tyre and given in the bike's manual.