Triumph TR6 Trophy (1956-60)

The Triumph TR6 Trophy was a motorcycle produced from 1956 to 1960. It featured a four-stroke, parallel-twin engine with a capacity of 649cc and a compression ratio of 8.5:1 for US and export markets and 7.0:1 for the UK. The bike had a maximum power output of 31.3 kW or 42 hp at 6500 rpm, and a wet weight of 173 kg or 380 lbs. It had a brazed lug, rigid frame, telescopic fork front suspension with hydraulic damping, and swing arm rear suspension with two Girling dampers. The front and rear brakes were both 178 mm SLS drum brakes, and the bike had a chain final drive with 101 links. The TR6 Trophy had a length of 2140 mm or 84 in, width of 700 mm or 27.5 in, wheelbase of 1397 mm or 55 in, and ground clearance of 127 mm or 5.0 in. The seat height was 775 mm or 30.5 in and the fuel capacity varied depending on the market, with the US version holding 13.6 L or 3.6 US gal / 3 Imp gal and the UK and export version holding 18 L or 4.8 US gal / 4 Imp gal.

Technical specifications:

Make Model: Triumph TR6 Trophy

Year: 1956 – 60
Engine: Four stroke, parallel twin
Capacity: 649 cc / 39.6 cu in
Bore x Stroke: 71 x 82 mm
Compression Ratio: 8.5:1 (US and export) / 7.0:1 (UK)
Cooling System: Air cooled
Induction: Single Amal Monobloc carburetor
Ignition: Lucas magneto
Starting: Kick
Max Power: 31.3 kW / 42 hp @ 6500 rpm
Clutch: Wet, multi-plate
Transmission: 4-Speed
Final Drive: Chain, 101 links
Gear Ratios: 1 st 11.2 / 2nd 7.8 / 3rd 5.5 / 4th 4.6:1
Frame: Brazed lug, rigid
Front Suspension: Telescopic fork, hydraulic damping
Rear Suspension: Swing arm, 2 x Girling dampers
Front Brakes: 178 mm / 7″ SLS drum
Rear Brakes: 178 mm / 7″ SLS drum
Front Tyre: 3.25 x 19 Dunlop
Rear Tyre: 4.00 x 18 Dunlop
Dry Weight: 166 kg / 365 lbs
Wet Weight: 173 kg / 380 lbs
Dimensions: Length: 2140 mm / 84 in Width: 700 mm / 27.5 in
Wheelbase: 1397 mm / 55 in
Ground Clearance: 127 mm / 5.0 in
Seat Height: 775 mm / 30.5 in
Fuel Capacity: US: 13.6 L / 3.6 US gal / 3 Imp gal / UK and export: 18 L / 4.8 US gal / 4 Imp gal