Highlights
- In current ownership for approximately 30 years
- T140E variant confirmed by engine number BX04741
- Last MOT tested in July 2018 (since expired) with a first-time pass and no advisories; now eligible for MOT exemption
- Stored in a dehumidified, carpeted workshop
- V5C and supporting documentation supplied
The Appeal
The 1978 Triumph Bonneville T140E sits at a fascinating crossroads in British motorcycling history. Produced by the worker-owned Meriden Co-operative during the pivotal year when the classic Bonneville was re-engineered to meet new emissions standards, the T140E introduced a redesigned parallel-port cylinder head, Amal Mk2 carburettors, and enclosed crankcase breathing, a more refined evolution of the legendary 750 twin. This example's engine number confirms it as a T140E.
This particular machine has been in the devoted care of one owner, the seller's late husband Don, for approximately 30 years. Throughout that time it was garaged in a properly managed workshop environment and the vendor states that Don maintained all of his vehicles to a high standard both mechanically and cosmetically. Now showing an indicated 18,322 miles on the clock, this is a long-term-ownership Bonneville that awaits its next custodian.
Key Information
- Mileage: 18,322 miles (indicated)
- Country of registration: United Kingdom
- MOT status: eligible for MOT exemption; last tested July 2018 (since expired) with a first-time pass and no advisories
- Technical specs: 744cc air-cooled parallel-twin (T140E), five-speed gearbox
- Paperwork: V5C, insurance document, and DVLA correspondence supplied

The Detail
- First registered in April 1978
- Currently on SORN
- Owned by the seller's late husband since approximately 1996; being sold following his passing
- Stored in a workshop on carpeted flooring, covered with dust sheets
- Workshop fitted with a dehumidifier to maintain a dry atmosphere
- Black paintwork
- Black seat pad with white 'Triumph' lettering on the rear
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