Specs of agricultural tractor Zetor Proxima 5421/5441/6421/6441/7421/7441/8421/8441 :
| Model | Zetor Proxima 5421/5441 | Zetor Proxima 6421/6441 | Zetor Proxima 7421/7441 | Zetor Proxima 8421/8441 |
| Years of production | – | – | – | – |
| Engine model / type | 6104 | 7204 | 7303/1104 | 1203/1204 |
| Number of cylinders / turbocharging | 3T | 4T | 4T | 4T |
| Engine displacement (cm3) | 3117 | 4156 | 4156 | 4156 |
| Piston dimension / stroke (mm) | 105×120 | 105×120 | 105×120 | 105×120 |
| Maximum engine power (hp) / rpm | 53/2200 | 61/2200 | 72/2200 | 82/2200 |
| Torque (Nm) / rpm | 227/1500 | 262/1500 | 308/1500 | 349/1500 |
| Number of gears (front + rear) | 10+2/12+12 | 10+2/12+12 | 10+2/12+12 | 10+2/12+12 |
| Number of synchronized gears (front+rear) | 20+4 | 20+4 | 20+4 | 20+4 |
| Speed-Shift | 8/10+10/16 | 8/10+10/16 | 8/10+10/16 | 8/10+10/16 |
| Type of reverse | – | – | – | – |
| Driving speed (km/h) | 1,6-38 | 1,6-38 | 1,6-38 | 1,6-38 |
| Max Driving speed (km/h) | 35/40/40 | 35/40/40 | 35/40/40 | 35/40/40 |
| Hydraulic pump capacity (L/min) | 40 | 40 (50) | 50 | 50 |
| 3-Point Hitch control | mech | mech | mech | mech |
| 3-point hitch max load (kg) | 2100 | 3440 | 4150 | 4150 |
| PTO speed (rpm) | 540 | 540 | 540 | 540 |
| Disc brake type (dry / wet) | – | – | – | – |
| Type of control of the braking system | – | – | – | – |
| Turning radius 2WD (m) | 7,4 | 7,6 | 7,6 | 7,6 |
| Turning radius 4WD (m) | 8 | 8,9 | 8,9 | 8,9 |
| Front wheel 2WD | 7,50-16 | 9,00-16 | 9,00-16 | 9,00-16 |
| Front wheel 4WD | 11,2-24 | 12,4-24 | 12,4-24 | 12,4-24 |
| Rear wheel 2WD | 14,9-28 | 16,9-34 | 16,9-34 | 16,9-34 |
| Rear wheel 4WD | 16,9-30 | 16,9-34 | 16,9-34 | 16,9-34 |
| 2WD total weight (kg) | 3045 | 3130 | 3130 | 3350 |
| 4WD total weight (kg) | 3375 | 3655 | 3655 | 3710 |
| Total height with cabin (cm) | 257 | 267 | 267 | 267 |
| Total length (cm) | 367 | 385 | 385 | 385 |
| Total width (cm) | 212/207 | 226/223 | 226/223 | 226/223 |
| Fuel tank capacity (l) | 120 | 120 | 120 | 120 |
| Cabin sound level (dB) | 83 | 83 | 83 | 83 |
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The history of the Czech brand Zetor began immediately after the Second World War, in 1946. That year the Brno-based company was established, and at the same time the first Zetor model, model number 25, was manufactured. In less than a year, Zetor manufactured around 3400 Zetor 25 models. Farmers value Zetor tractors for their quality/price ratio.
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