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Gearbox for 4x4 and spare parts A manual gearbox transmission is used in SUV type vehicles. By using the gearbox and clutch, you can adjust the torque of the combustion engine. A conventional manual transmission is often standard equipment in 4x4 vehicles. Other options include automated transmissions, automatic transmission or semi-automatic transmission. In the gearboxes of SUVs, the driver chooses can choose the gear ratio at any time. Modern gearboxes in 4x4s use five, six or seven forward gears and one reverse. The most common and popular manual transmissions have five forward gears and one reverse. Gearboxes of cars and SUVs are now almost universally synchronized, while transmissions for heavy trucks, motorcycles and racing cars are not. Non-synchronized gearboxes are used for several reasons. Certain materials, such as brass, are more susceptible to wear and tear. The gears in the gearbox are replaced with steel, improving the reliability of the mechanism and reducing wear. In addition, synchronized transmission is slower than that of non-synchronized transmission. Most cars and trucks are equipped with a  synchronized gearbox. The reverse gear is usually not synchronized as it is only one gear, but some cars have synchronized reverse gears. At our site, findspares.co.za, you can find second hand gearboxes which have been carefully removed by a specialized service team. You can also ask for prices of replacement parts for the damaged transmission of your 4x4. At findspares.co.za you can find parts for any transmission in any 4x4 make or model.