Description
This motorcycle is Lot 342 to be auctioned by Bonhams at The Spring Stafford Sale (The International Classic MotorCycle Show) on April 25th & 26th, please see the Bonhams Motorcycles Website for full details.
Auction Timings:
Lots 1 - 94 are to be sold from 14:30 on Saturday 25th April 2026.
Lots 201 - 353 are to be sold from 11:30am on Sunday 26th April 2026.
Public Viewing:
Available 25th & 26th April 2026 from 09:00 until 17:00, at The Staffordshire County Showground (The International Classic MotorCycle Show).
** 1958 Triton 649cc Café Racer**
Registration no. TSY 581
Frame no. N14 76960
Engine no. T120 D15851 (see text)
• Classically-styled Triton
• Many modern improvements incorporated
• 415 miles since completion
This Triton was crafted by the present private owner over a period of years, being completed in 1996. It comprises the traditional pre-unit 650 Triumph engine with a wideline Norton frame and Norton 4-speed gearbox. It is fitted with the customary short roadholder forks, polished alloy central oil tank, and Manx petrol tank; carburation is via twin Amal MkII concentric carburettors; electrics are 12volt, with Pazon electronic ignition and a distributor, swept-back exhaust pipes, and reverse-cone megaphone silencers. Clip-ons and rearsets are fitted, as are alloy levers, and a Tomaselli quick- action throttle. The wheels have valanced-alloy rims, and a conical front hub, with twin-leading shoe brake. The engine is to Bonneville spec, with a later 9-stud cylinder head and barrel, Morgo oil pump, and since completion, has also had a top end strip to fit new valve springs and a thicker cylinder head gasket. Transmission is via a diaphragm clutch and belt drive. Mileage since completion is 415 miles.
TSY 581 has been laid up since 2005, carefully stored in dry conditions, The vendor advises that it will require a new battery, re-commissioning, basic safety checks, ignition test, flushing oil running through, and new mineral oil adding prior to taking to the road. It should be noted that the engine number appears to be a non-factory stamping.
Included with the machine is a new exhaust system with Dunstall Decibel-type long megaphones, a tested Boyer Bransden ignition, a new long kickstart arm, and headlamp unit.
Documentation comprises an old-type V5C, old V5, a Norton Owners club dating certificate, some expired MoT certificates, a copy workshop manual, and a large quantity of suppliers' info, sundry receipts and papers.
Key not required
All lots are sold ‘as is/ where is’ and Bidders must satisfy themselves as to the provenance, condition, age, completeness and originality prior to bidding. Visit the Bonhams Motorcycles website for all pertinent auction information.
