Derived from the previous X 2720 and X 2770 series (RGP 1), characterized by unique diesel traction, the X 2700, also called RGP 2, was equipped with two Renault type 517-V12 engines capable of releasing 300 horsepower and could reach a top speed of 124 km/h. The 20 units commissioned by the SNCF, on a project of the Office national de la recherche ferroviaire, were built from 1954 and remained in service until the 1990s.

The X 2700s featured a two-unit package, one of which was motorized, and had its trailer which was defined XR 7700, they were used for long and medium journeys, even across borders and sometimes even as far as Geneva.

Highlights and features:

• Completely new development
• Flat and low-positioned 5-pole motor with flywheel in the motorized unit hidden underneath the interior
• Wheels with the original outer profile
• All three versions are different tooling versions in three different liveries
• Working interior light in motorized (X 2700) and cab-control trailer unit (XR 7700), controllable when equipped with a digital decoder
• Front and rear lamps lit depending on direction in analogue mode (Golden white and red LED), controllable when equipped with a digital decoder
• Close coupler mechanisms the rear side of the motorized unit and both ends of the trailer unit
• NEM 362 coupler pockets on all couplers
• Digital MTC 21-pin socket (NEM 660) in both units (railcar and trailer)
• Digital versions with sound (HJ2386S/87S/88S) fitted with digital DCC sound decoder and “sugar cube” loudspeakers for perfect sound quality
• All separately fitted details pre-installed. Front of the railcar fitted with decorative coupler and brake hoses
• The rear end of the cab control trailer can be fitted with a bellows so it can be coupled to a 2nd trailer or railcar-trailer couple
• Length over buffers (railcar and trailer): 605 mm
• Minimum radius: 356.5 mm