Case IH STX 275-450 Steiger

In 1999, New Holland acquired Case IH. In the autumn of 2000, the Case IH 9300 Steiger model lineup was completely replaced by the all-new STX Steiger models. In the summer of 2001, the corresponding lineup was also introduced under the name New Holland TJ275-440.

The wheelbase was significantly longer and the hydraulics more powerful than in previous models. The pivoting front axle was now known as AccuSteer and was available on the two smallest models. Larger models were also available as QuadTrac models equipped with rubber tracks. The technical specifications correspond to the wheeled versions, except for an 11.4-meter turning radius and an increased weight of 1000 kg.

The engines used were from Case IH and Cummins' new 15-liter. The nominal engine speed for all engines was 2000 rpm, with peak power achieved at 1850 rpm. Torque increases were between 35-43%. Case IH engines featured four-valve technology and wastegate turbochargers. The transmission was a new 16-speed Fuji Univance full powershift, which allowed skipping every other gear when accelerating if desired. The STX425 was also available with a 24+6 synchromesh transmission. The cab was entirely new and was said to be 23% more spacious than the next most spacious competitor. The controls and gauges were centralized on the right side and pillar. The Luxury version included, among other things, a leather seat, plush carpet, and CD changer.

In the autumn of 2003, the 500-horsepower STX500 was introduced, which otherwise corresponded to the STX450 model.

In Germany, the STX375, 375 QuadTrac, 440 QuadTrac, and 450 QuadTrac models were sold. The DIN power of the 375 was reported in Germany as 381 hp. The QuadTrac was approximately 20% more expensive than the wheeled version.

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