1971 BSA A65 Thunderbolt 650cc

Highlights

Comprehensive engine rebuild using original parts
Powder-coated frame and mudguards for hard-wearing finish
Four-gallon British fuel tank fitted while retaining American-style handlebars and wide seat for comfort
Stainless steel wheels with Dunlop K70 tyres fitted

The Appeal

The 1960s and '70s were a period of evolution rather than revolution for Britain's motorcycle manufacturers. They'd already developed world-beating engines and frame designs back in the '50s, so why try something radically different if they didn't have to?

Well, they hadn't bargained upon the burgeoning Japanese bike industry. But before that came along and dashed their winning streak, the likes of Triumph and BSA were able to continue with some brilliant parallel twins - like the A65 Thunderbolt.

This 1971 example, was supplied new to the United States, returning to the UK from Baltimore in 2015. It has since undergone a comprehensive rebuild which includes several upgrades like a British home market spec four-gallon fuel tank, modern cartridge-type oil filter and a 22-tooth engine sprocket for improved cruising.

Presented in superb overall condition both mechanically and cosmetically, this BSA is ready to enjoy.

History and Paperwork

US market specification
11,588 miles indicated
Imported from Baltimore, USA in 2015
Purchased as a project in early 2016 from Ian Robinson in Rochester
Registered as a historic vehicle in July 2016
MOT tested in May 2016 with no advisories (expired but now exempt)
Comprehensive engine rebuild with new seals, gaskets, piston rings, and valve springs
Regular oil changes and maintenance performed throughout current ownership
V5C present
BSA Owners' Club Vehicle Report

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The Condition

Presented in smart, usable condition with little in the way of wear to report
We're not informed of any damage or corrosion to the frame
Powder-coated frame, mudguards, and four-gallon British spec fuel tank
The vendor has the original two-gallon fuel tank also (which was gold and cream) but this would need to be repaired before use
Rebuilt wheels with stainless steel rims and spokes
Dunlop K70 tyres fitted
American-style handlebars and wide seat for comfort
The vendor notes that the side panels are plastic, not original metal items
Indicators fitted
No notable wear apparent to the seat upholstery, grips and foot pegs
Very smart chromework
The speedometer/odometer unit presents well and reads clearly

The Mechanics

654cc air-cooled two-stroke parallel twin
Four-speed gearbox
Cartridge filter fitted between engine and oil tank for increased oil capacity and cooling
Oil-in-frame design
22-tooth engine sprocket for better cruising at lower engine RPM
New headlight, rear shocks, silencers, fork stanchions, seals, and taper steering head bearings
The vendor completely stripped the engine and found all original parts with very little wear
The engine was then rebuilt with new seals gaskets piston rings and valve springs
Just 2,000 miles or so covered since the engine rebuild
The fuel tank looks very clean inside and the vendor comments that the bike is never stored with old petrol in it
Regular oil changes and chains adjusted as necessary
Carburettor stripped and cleaned recently, finding no issues
We're informed that the engine is an easy starter and runs well
The vendor comments that these bikes were capable of 90mph, but sticking to 65mph the engine will still run happily all day

BEFORE YOU BUY

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