Dunlop 90/90-21 AT81

Carcass Tension Control System (CTCS) tracking system, optimizing tension in different areas of the rubber, resulting in more consistent and controlled tracking, linear traction and better feedback.

DUNLOP patent Progressive Cornering Block Technology (PCBT) Progressive Cornering Blocks - Increases the flexibility and control of the rubber when sliding through corners with a double edge.

Multiple Block Distribution (MBD) new "crossbar-less" design that provides better surface contact feel and grip on muddy surfaces.

DUNLOP GEOMAX AT81:

For all those who love to ride on difficult and challenging terrain, there's the DUNLOP AT81 all-terrain tyre.

The benefits of DUNLOP AT81:

High grip.

suitable for all terrains

excellent stability

DIRT Grip design - the composition and angle of the rear tyre blocks offer maximum traction on off-road terrain

Geomax AT81 RC (Reinforced Construction) - nylon rear tire construction

Blocks located in the side and central tread sections for fast cornering

The massive tread blocks of the DUNLOP AT81 motorcycle tyre help to provide very good traction. So you can take on muddy roads or rocky surfaces without fear of collision. The stability of this tyre is ensured by innovative technologies that distribute the pressure evenly between the tread and the road surface.

Product parameters

Brand: DUNLOP

Terrain: Mud, Medium terrain, Hard surface

Tread: AT81

Width: 90

Profile: 90

Dimensions in inches: 21

Load index: 54 (212 kg)

Speed index: M (130 km/h)

TT/TL: Normal (TT)

Position: Front

FIM road homologation NO

Store tyres clean and away from sources of heat, light, ozone or hydrocarbons. Avoid prolonged exposure of tyres to direct sunlight.Avoid any contact with grease, petrol, volatile solvents or other agents that may damage the rubber. Avoid horizontal storage of tubeless tyres, only small tyres can be stored horizontally (maximum 6 months). If tires are stored horizontally, they must be placed tooth to tooth. If tyres are stored mounted on the rim, reduce the inflation pressure.Make sure there is no water or moisture inside the tyre. Never store tyres directly in contact with the ground for long periods of time. For safety reasons, tyres should only be repaired by experts using the correct methods and tools. When loading a tyre, the relationship between speed, inflation pressure and load capacity must be taken into account. Overloading causes premature destruction of the tyre. Use technical documentation and inflation tables that define the load and inflation for different operating speeds. Under-inflation is not only caused by improper run-flatting, but also by liner separation or other damage to the tyre liners. Overinflation increases the hardness of the tyre and reduces the resistance to impacts leading to damage to the tyre liners.

Mounting and dismounting instructions
Fitting and removing tyres can be dangerous and should only be carried out by trained and qualified personnel using the correct tools and working procedures. Failure to follow these procedures may result in incorrect fitting of the tyre to the rim and subsequently cause the tyre to be destroyed with explosive force, which can cause serious injury or death. Make sure the rim, tire and tube are compatible. Check that the tyre is suitable for the equipment/machine. Use only rims recommended or approved by the tire manufacturer. Always use only the correct special equipment and tools.The rim must be clean and in perfect condition (not damaged etc.), if necessary clean the rim with sandpaper. Never fit tyres to rims that are cracked, seriously deformed, have welding repair marks, etc.Carefully inspect the inside as well as the outside of the tyre to identify any damage. If the extent of the damage does not allow repair, the tyre should be devalued.When fitting with a tube, always use the correct new tube and liner for the size. For mounting tubeless tires, on tubeless rims, always use a new tubeless valve. Lubricate the rim and tire bead before mounting. Use only a suitable lubricant that will not destroy the tire (never use silicone or gasoline based lubricants).Vertical mounting is recommended. In the case of horizontal mounting, it is essential to check that the bottom bead fits correctly.Fit the tyre onto the rim opposite the valve hole (respect the direction of rotation indicated by the arrows). Using the mounting lever, gradually slide the first bead over the rim rim rim rim. Then insert a lightly inflated inner tube, sufficiently treated with a slip joint (if fitted), into the rim. Position the valve and secure it lightly with the retaining ring. Fit the second foot, working in sequence so that you end up at the valve. Remove the inner valve liner to seat and center the shell properly. Slowly inflate and check for proper seating of the casing foot. Ensure that the casing foot has not pinched the inner tube.Maintain a safe distance during inflation, always use a safety cage, preferably attached to a wall or safety chain. During pressure readings, make sure that no part of your body is in the possible trajectory of the valve internals or its cap. It is recommended to use a suitable device to limit the inflation pressure. Use a filter and dehumidifier for the compressed air necessary to remove moisture and dust. If the feet are not seated properly, bleed, re-prime and re-inflate. Repeat this operation until the feet are seated correctly.If all previous operations have been performed correctly, replace the valve liner. Inflate the tyre according to the load Ensure that the valve does not touch the rim, brake drums or other mechanical parts. Disassembly Never attempt to remove the bead of an inflated tyre.Always remove the inner valve insert. Check that the tyre is completely free of air before dismounting. Never use tools that may damage the rim or tire beads.