Whether your needs call for a rotary disc header, a sickle header or a draper header, you'll find the perfect match with a Challenger SP "B" Series self-propelled windrower. The 185 Hp SP185B delivers capacity and convenience and was designed with both the strength and the horsepower to handle the model DKHB Series rotary disc headers, as well as all "B" Series sickle and draper headers.