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A Challenger MT765B tractor

The Challenger Tractor was the world's first rubber tracked agriculture tractor, created by Caterpillar Inc. in 1987. The original model was a Challenger 65 featuring the Mobile-Trac System (MTS) consisting of rubber tracks and a suspension system. The MTS combined the flotation and traction of steel tracks with the versatility of rubber tires. The use of tracks gives the machines increased tractive performance compared to traditional four wheel drive tractors. The Challenger 65 began as a 270GHP machine used primarily for heavy tillage.

In 1995 Caterpillar introduced the first "row crop" tracked machines with the Challenger 35, 45 and 55. These machines ranged in power from 175 hp pto to 225 hp and were designed to be used for a variety of tasks the larger machines could not. [1]

The Caterpillar Challenger MT875B is the largest production tractor available, with an astounding 570 gross engine horsepower.[2] The MT875B broke the world record for most land tilled in 24 hours with a custom-made, 46-foot disc harrow. It tilled 1590 acres (644 Hectres). The tractor consumed 1.8-litres/acre of diesel fuel.[3]

The MT700/MT800 series are the small/large rubber track models while the MT900 series use tires (710/70R42 Duals as standard on the MT900C series).


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