1979/80 Triumph Bonneville T140
Lot 331
1980 Triumph 744cc T140 Bonneville Frame no. T140D CB26581 Engine no. T140D CB26581
£5,000 - 7,000
US$ 8,400 - 12,000
Lot Details
1980 Triumph 744cc T140 Bonneville
Registration no. CJM 605V
Frame no. T140D CB26581
Engine no. T140D CB26581
The final phase of Triumph twin development began in 1972 with the first appearance of the new enlarged-to-750cc version of the Bonneville, the increase in bore size necessitating a new crankcase to accommodate the larger barrel. Other improvements included a new ten-stud cylinder head, triplex primary chain, stronger transmission and a disc front brake. A five-speed gearbox, introduced on the preceding 650 Bonneville, was standard equipment on the 750. Despite the age of the basic design and strong competition from Japanese and European manufacturers, the Bonnie remained for many years the UK's top-selling 750 and was voted Motor Cycle News 'Machine of the Year' in 1979.

The T140 offered here was purchased new by the immediately preceding owner, James Dean of South Oxhey, Hertfordshire and converted by him into a stylish 'café racer'. Noteworthy features include Lester cast alloy wheels, twin front disc brakes, adjustable 'Ace' handlebars, Lockhart oil cooler, Goodridge hoses, chromed engine castings, high-compression pistons, high-lift camshafts, hardened valve seats, large-bore exhaust pipes, old-style silencers, halogen headlight, rear-set footrests and taper-roller steering head bearings. Anglo Bike tuned the engine, the top-end of which was completely rebuilt by Len Patterson. Mr Dean's detailed summary of the machine's specification is on file (perusal recommended). Acquired by the current vendor circa 1994, this unique T140 'special' is offered with owner's handbook, Swansea V5 registration document and a quantity of old MoTs (nine in number), the most recent of which was issued in July 1992 at 30,212 miles. The current odometer reading is 31,113 miles. An assortment of spares is included in the sale.
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Contacts
  1. Ben Walker
    Specialist - Motorcycles
    Bonhams
    Work
    101 New Bond Street
    London, W1S 1SR
    United Kingdom
    Work +44 20 8963 2819
    FaxFax: +44 20 8963 2801
  2. James Stensel
    Specialist - Motorcycles
    Bonhams
    Work
    101 New Bond Street
    London, W1S 1SR
    United Kingdom
    Work +44 20 8963 2818
    FaxFax: +44 20 8963 2801