REX4 F-S-V-GT is a benchmark for specialized tractors worldwide, bringing significant technical and functional advances in technology, ergonomics, comfort, flexibility and design. The Rex 4-110 model is available with F, S, GT and V cab versions. It is powered by a Deutz TCD L4 2.9L engine with a displacement of 2,900 cm3 and 4 cylinders, producing 102 HP (75 kW), with turbocharging and an aftercooler, a Power Core air filter and a 7.5-litre AdBlue/DEF tank. Fuel tank capacity, depending on cab version, is 65 litres (F-GE-GB) or 70 litres (GT), or 80 litres (F), 60 litres (S-V) or 85 litres (GT). The engine meets the Stage V emissions standard. The transmission offers several options: 12+12, 16+16 with reducer, 24+24 Hi-Lo, 32+32 Hi-Lo with reducer, and 36+12 or 48+16 HML with reducer, while the PTO shaft is available in 540, 540E, 1000 and 1000E modes. The front brakes are wet multi-disc with a Hydralock axle, and the rear brakes are wet multi-disc; the trailer braking system operates to the MR hydraulic standard. The front differential lock is limited-slip, and a hydraulic pump with a flow rate of 58+30, or optionally 30+58+36 (88) l/min, serves rear spool valves (2 to 4, mechanical or electrohydraulic) and mid-mounted spool valves (1 or 3 electrohydraulic). The hitch is Category II with fixed balls, and maximum lift capacity is 2,700 kg, or optionally 3,400 kg. The cab offers air conditioning, an air seat, suspension on Hydro-Silent blocks and a carbon filter, with filtration category 2, heating and air conditioning, LED work lights for the low-profile cab and a low-profile LED beacon. Unballasted weight is 2,800 kg (F version) or 3,000 kg (GT version), and the wheelbase is 2,140 mm. Front weights are available (6x28, 8x28, 4x42 or 8x42 kg for F-GE-GB, or 6x36 or 8x36 kg for GT) along with rear weights (2x45 kg per wheel or 4x45 kg, two per wheel).