Lamborghini R-904 (DT) vs Renault 921-4

12 material differences

Tractor one

1976–1982

No measured PTO figure

Tractor two

1977–1980

No measured PTO figure

Which should you choose?

Read our verdict on the R-904 (DT) and the 921-4 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

12 material differences · 3 fields identical or within 5%, which is not counted as material

Lamborghini R-904 (DT) and Renault 921-4, field by field
Field	R-904 (DT)	921-4	Gap
Engine
Engine power, claimed claimed	90.8 hp	90.8 hp	—
Engine declared	LAMBORGHINI FL-1154/2	MWM D 227-6	differs
Displacement declared	4.99 L	5.66 L	+13% 921-4
Maximum torque declared	—	249 lb·ft · 337 N·m	—
Transmission
Top speed declared	15.5 mph · 25 km/h	15.5 mph · 25 km/h	—
Clutch declared	Dry LuK double clutch	Dry LuK double clutch type 310/310 G	differs
Hydraulics & hitch
Pump flow declared	6.4 gpm · 24.2 L/min	8.6 gpm · 32.6 L/min	+35% 921-4
Pressure declared	2,418 psi · 167 bar	2,321 psi · 160 bar	—
Three-point lift at ends declared	5,291 lb · 2,400 kg	10,119 lb · 4,590 kg	+91% 921-4
Rear PTO speeds declared	540 rpm	540/1000 rpm	differs
Weight & dimensions
Unladen weight declared	6,636 lb · 3,010 kg	10,847 lb · 4,920 kg	+63% 921-4
Maximum permissible mass declared	—	17,637 lb · 8,000 kg	—
Wheelbase declared	—	105.6 in · 2,683 mm	—
Length declared	139.0 in · 3,530 mm	174.9 in · 4,442 mm	+26% 921-4
Width declared	70.1 in · 1,780 mm	77.2 in · 1,960 mm	+10% 921-4
Height declared	87.0 in · 2,210 mm	108.9 in · 2,765 mm	+25% 921-4
Ground clearance declared	18.1 in · 460 mm	16.9 in · 430 mm	+7% R-904 (DT)
Turning radius, braked declared	—	15.6 ft · 4.75 m	—
Fuel tank declared	63.4 qt · 60.0 L	216.6 qt · 205.0 L	+242% 921-4

Source

Source