For the Geomax MX 12, Dunlop’s U.S. race team joined forces with DPG and Dunlop’s European MXGP World Championship racing team to develop the tire on tracks here and in Europe, including testing on some of Europe’s “bottomless sand” tracks on the world MX championship schedule.
Designed for soft-terrain applications, the MX12 excels in extreme sand and mud conditions. Dunlop’s goal with this tire was to increase overall performance in a broader range of conditions—for example maintaining the tire’s high level of grip on muddy tracks even when the mud begins to dry out.
Compared to the MX11, the MX12 offers increased cornering traction, acceleration traction, braking grip, enhanced handling in rutted terrain, and does a better job of damping out bumps and impacts to keep the contact patch—both front and rear—on the ground and digging in.
Designed primarily for 250cc and 450cc motocross bikes using 21-inch front and 19-inch rear sizes, the MX12 takes Dunlop’s Geomax line to a new level.
To obtain such performance characteristics, engineers focused on three areas of design: Tread pattern, tire profile, and carcass construction.
Dunlop’s line of Geomax® tires has dominated racing since its pro-class introduction in 2010. Since then, Geomax motocross-oriented tires have won every Pro Supercross and Motocross championship in the U.S., and racked up hundreds of race wins. Since it’s inception, Dunlop engineers have continued to evolve the Geomax series with testing input from professional racers, and development of new-generation tires at Dunlop’s Proving Grounds (DPG) in Huntsville, Alabama.
TREAD PATTERN For enhanced acceleration and braking grip, Dunlop developed new V-Block technology, which puts a V-shaped row of blocks down the center of the rear tire. By optimizing block angle, stagger and structure of this center area, V-Block technology offers more traction on straights and when accelerating out of corners, increases braking grip, and does a better job clearing the tire in muddy conditions to maintain maximum performance. This tread pattern also contributes to better bump-control
Like the intermediate-terrain MX3S and hard-terrain MX52, the MX12 uses a variation of Dunlop’s patented Progressive Cornering Block Design in the rear tire, better known as “Block-in-a-Block” technology. This configuration on the shoulder knobs of the tire delivers more progressive cornering action and aids in slide control. The key to this knob design focuses on adding overall height to each knob at the center of this new multi-block configuration— specifically, with a taller, smaller, inner knob. The additional biting edges and the increased surface area they provide effectively increase the tire’s footprint and side grip for additional cornering traction.
TIRE PROFILE - Engineers reshaped the front and rear tires to increase height in the profile. This has two benefits: First, it effectively increases the diameter of the tires and increases the length of the contact patch. This increases the tire’s ability to absorb bumps, enhancing traction in rough conditions. Second, the tread area is slightly narrower in the front and back, reducing rolling resistance and improving steering in rutted sand and mud conditions.
CARCASS CONSTRUCTION - As standard in the Geomax line, the MX12 features a variation of Dunlop’s Carcass Tension Control System. Tuned carcass flexibility from recesses placed strategically along the tire carcass help smooth ride characteristics and allow the bike to follow a line more accurately.
The MX12 will be available in select sizes in August
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80/100 -21
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100/90 -19
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110/90 -19
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