Triumph Bonneville T140 For Sale

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Triumph Bonneville T140
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Insurance Costs: 5 of 10
Current Prices: £6,650–£4,650

What Is It?

The Triumph T140 is a standard naked bike and is powered by an air-cooled 744 cc parallel twin engine, producing 49 bhp at 6,200 rpm. It's starting to look quite investible now.

Features include:

  • Steel tubular frame
  • Disc brake up front
  • Drum brake at the rear
  • Standard fork
  • Dual rear shocks

Compared to the T120 the gearbox is now a five speed design, up from four and power is up 3 bhp from a 95 cc larger engine.

The T140 was produced by Triumph Engineering until bankruptcy in 1983 then by Les Harris / Racing Spares between 1985 and 1988.

Updates

1975: 254 mm rear disc brake.

1979: Electric starter.

1982: Dual 254 mm front disc brakes.

Review In A Few

What's Good?

  • Parts availability
  • Handling
  • Brakes

Any Downsides?

  • Some vibration
  • Oil leaks

Specs

Capacity: 744 cc (average)

Power: 49 bhp / 37 kW (average)

Red Line: 7,000 rpm (average)

Top Speed: 110 mph / 177 km/h (high)

Economy: 32 mpg / 8.8 L/100km (poor)

Range: 80 miles / 129 km (low)

Fuel Capacity: 12.0 litres / 2.6 gallons (average)

Seat Height: 787 mm / 31.0 inches (low)

Wet Weight: 198 kg / 437 pounds (average)

Dry Weight: 189 kg / 417 pounds

Power to Weight: 0.247 bhp/kg / 0.185 kW/kg

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Price Guide

Year
Dealer
Private
Part Ex
Mileage
1975
£5,800
£4,650
£4,100
14,600
1976
£5,900
£4,700
£4,100
15,400
1977
£5,950
£4,750
£4,150
16,300
1978
£6,000
£4,800
£4,200
17,200
1979
£6,050
£4,850
£4,250
18,000
1980
£6,150
£4,900
£4,300
18,900
1981
£6,200
£4,950
£4,350
19,700
1982
£6,250
£5,000
£4,400
20,500
1983
£6,300
£5,050
£4,450
21,300
1984
£6,400
£5,100
£4,500
22,100
1985
£6,450
£5,150
£4,500
22,800
1986
£6,500
£5,200
£4,550
23,500
1987
£6,600
£5,250
£4,600
24,200
1988
£6,650
£5,300
£4,650
24,800

Year shows signs of appreciation

We work out the price guide in-house.

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