Tracked tractor specialist Challenger has introduced three new models to its MT700D series.
Ranging from 335hp up to 382hp, the old Caterpillar engine has been ousted for a six-pot Sisu power plant in the new US-built tractors.
Challenger reckons the new SCR-treated 8.4-litre engine is more lightweight and quieter in work than the Cat version. In re...
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