The BSA A70 Lightning was a 750cc equivalent of the BSA A65 produced for the US market for flat track racing. Raced by stars of the time such as Dick Mann. They were also known as a ‘Lightning 75’. Only 200 A70Ls were produced, 102 in June, 64 in July and 36 in August, See the production records below.

The A70, aka A75L—L for Lightning—is essentially a run-of-the-mill, nothing-to-get-overly-excited-about circa 1971/1972 BSA A65L, albeit with a longer stroking engine providing a bore and stroke of 75mm x 85mm as opposed to the A65L's 650cc 75mm x 74mm over-square lump.

Oct 5, 2012 · Frustrating the issue, there apparently is evidence that some A70s may even have been stamped with A65 engine numbers. Brian St. John of Legend Cycle, the Idaho-based shop that restored our feature bike, says the bike’s A65 origins made the restoration fairly easy, except for sourcing new pistons.

A70 Lightning [ edit ] To produce a 750cc machine for AMA Class C racing, BSA lengthened the stroke of Lightning's crankshaft by 11mm to give a displacement of 751cc. 202 A70 Lightning machines were produced to meet the minimum production requirements.

The BSA A70 Lightning was a 750cc equivalent of the BSA A65 produced for the US market for flat track racing. Raced by stars of the time such as Dick Mann. They were also known as a ‘Lightning 75’. Whilst the bike used the same chassis as …

Jul 14, 2021 · The 1971 BSA A70 Lightning is almost indistinguishable from a garden-variety 1971 A65 with the exception of the “750” decal on the side covers. They’re all painted in the same orange and creme color scheme as was used on the 1971 A65 Lightning. Most of the 202 A70s came with black frames, while a few had the dove gray frames that BSA ran ...

Mar 19, 2023 · FOR SALE; 1972 BSA A 70L (BSA’s 750cc twin) for the sum of $3250.00. Clean Mass. title, matching numbers, a complete and stock motorcycle, with all it’s original parts and then some. Complete rolling chassis with all of its cycle parts mounted and intact.

Oct 5, 2012 · 1971 BSA A70L Lightning Claimed power: 52hp @ 6,250rpm (est.) Top speed: 120mph (est.) Engine: 751cc air-cooled OHV parallel twin, 75mm x 85mm bore and stroke, 9.5:1 compression ratio Weight (dry): 390lb (177kg) Fuel capacity/MPG: 3gal (11.3ltr) Price then/now: $2,500 (est.)/$4,000-$8,000. In 1971, the BSA/Triumph Group was effectively bankrupt.

Oct 19, 2022 · "The BSA A70 Lightning was a 750cc equivalent of the BSA A65 produced for the US market for flat track racing. Raced by stars of the time such as Dick Mann. They were also known as a ‘Lightning 75’." Only 202 of these bikes were made.

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