 Challenger was a trade name for rubber-tracked tractors created by the Caterpillar corporation in 1987. In 2002, Caterpillar sold the line to AGCO who manufacture the tractors under the AGCO Challenger brand and sell through Caterpillar dealers. The line has been expanded to include wheeled tractors.
Challenger - official site
AGCO Challenger - information from AGCO
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