| MODEL | TRIUMPH TR 6C / P/ R / RV TROPHY 1972 - 1973 |
| Year | 1972 - 1973 |
| Engine Type | Four-stroke, parallel twin, OHV |
| Displacement / Capacity | 649 cc |
| Bore X Stroke | — |
| Compression Ratio | 8.5:1 |
| Cooling System | Air cooled |
| Max Power | approx. 47 hp @ 6700 rpm |
| Max Torque | — |
| Ignition | — |
| Induction | 30 mm Amal carburettor |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 4-speed constant mesh (5-speed on TR6RV) |
| Clutch | Wet multi-plate, cable operated |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Welded frame with large diameter oil-bearing backbone |
| Front Suspension | Telescopic fork |
| Rear Suspension | Swingarm, 2 x Girling dampers |
| Front Brakes | 8 in drum (disc from 1973) |
| Rear Brakes | 7 in drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 873 mm / 34.5 in |
| Wheelbase | 1420 mm / 56 in |
| Ground Clearance | 180 mm / 7 in |
| Dry Weight | 174 kg |
| Wet Weight | 196 kg |
| WHEEL SPECS | |
| Front Tyre | 19 in Dunlop |
| Rear Tyre | 18 in Dunlop |
| FUEL SYSTEM | |
| Fuel Capacity | 11.3 Litres / 3.0 US gal (US market); 18 Litres / 4.8 US gal (UK and export) |
| Fuel Consumption | — |
| Top Speed | — |
These were the 1972-73 oil-in-frame 650 Trophies, covering the TR6C scrambler, the TR6P police model and the TR6R roadster, plus the TR6RV with a five-speed box. The frame doubled as the oil reservoir, an early-1972 seat was later lowered by roughly two inches, and the weak front drum was replaced by a disc brake in 1973.
