At the end of 2004 the water-cooled-engine versions of the Same Dorado were introduced. The equivalent Lamborghini-series designation was changed to R2, while Hürlimann models retained the XA badge. Like the larger Lamborghini models, the R2 was now painted in silver metallic, and from 2006 onwards Hürlimann tractors also adopted the silver finish.

The lineup consisted of two 3-cylinder and two 4-cylinder versions, the higher-output variants in each case being turbocharged. Fuel injection was handled by individual pump units for each cylinder. On the 87-hp model the engine management was fully electronic and the electronic hand throttle featured a rev-memory button. In Finland the standard transmission was a 30+15 gearbox without a powershift but equipped with creeper gears. The Agroshift transmission, by contrast, offered 45+45 speeds thanks to a three-speed hydraulic powershift unit. An optional hydraulic reverser with push-button control was also available. The most basic version in the range had a 20+10 gearbox without creeper gears; this entry-level model was also called the Dorado Classic.

The three-point hitch lift capacity was 3,000 kg, or 3,600 kg if additional lift rams were fitted. An electric-lift linkage was offered as an extra. The cab noise level was rated at 76 dB. Parallel models included the narrower Dorado S versions for vineyards and the F versions for orchards; these narrow-track models were also offered in a more powerful 95-hp spec.

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