in farming transport. They were mostly used in farming, forestry and community service. Zetor manufactured three types: Proxima CL, proxima GP, and Proxima HS, with power outputs ranging from , with a range of transmissions. They also offered creeper gears in the CL model, up to three-stage PowerShift or PowerShuttle. Zetor Forterra The Forterra range introduced robust tractors equipped with four-cylinder Zetor engines, which were suitable for heavy-duty work in farming and forestry. The first models entered the market in 2008. In 2012, the range was extended by the Forterra HSX, with 30/30 transmission and electro-hydraulic reverser. In 2014, the range was extended by the Forterra HD, with a power output of and electronic hydraulic regulation. Zetor Crystal For a long time, Zetor did not produce a powerful six-cylinder tractor. One was launched in 2015, when the unveiling of the Zetor Crystal. The name "Crystal" refers to the legendary tractors produced by Zetor from 1969 to the 1980s. In that period, over 45,000 Crystal tractors were sold. The new Crystal was equipped with a six-cylinder engine, having a power output of from . The engines were had 24 valves and common-rail fuel injection. The transmission offered 30 forward and 30 reverse gears. The operation of the tractor was made easier by three-stage PowerShift, PowerShuttle and PowerClutch, with the clutch button incorporated into the gear-shifting lever. Branding of Zetor tractors The Unified Series used new coding. The first or three numbers of the marking of the tractor related to the approximate power of the engine in horsepower, e.g. 72, 80, 121, 162, etc. The next two numbers denoted powered axles, e.g. 7211 (Zetor with approximate power of without front-wheel drive). 45 (Zetor with 4WD) 16 (Semi-caterpillar version) Zetor by Pininfarina In 2015, at the Agritechnica exhibition in Hanover, Zetor introduced the design concept "Zetor by Pininfarina". The concept was applied to all products and model ranges of the Zetor brand. The BBC said of the Italian Pininfarina studio design that it is the most sexy tractor in the world. Other services Engines and components Zetor also produces and sells individual engines and tractor components. Four-cylinder Zetor engines meet required emission standards, including the currently strictest Stage IV. It offers service and spare parts, which are supplied throughout the world. The Zetor stock currently includes over 20,000 original parts for all types of Zetor tractors, ranging from Unified Series I, II, and