Tractor test: Valtra N121 HiTech The Finns went off on a design tangent with the N series when it was launched back at the tail end of 2005. For this is a Valtra tractor line that positions its four-cylinder engine behind, rather than over the top of, the front axle. As a result, the N represents something of a departure for this colourful brand from the icy North. We test the 93kW/126hp N121 HiTech model (ECE R24)