twins- engine parts

Condition: Used
1954 - 1957
Plunger frames
​Made in England

Condition: NOS
Fits A7 - A7 star Twin frame only
+ A10 Plunger 1947 - 1957

NOS
Made in England (aftermarket)
Will fit: A10 + A10 Super Rocket
1956-1962
BSA part no. : 67-360 inl.
67-362 exh.
Weight 30 & 32 grams each

Condition: Used but in good condition, no broken fins
1950-

Condition: Used
Head in very good condition, no fins broken
Complete with valves, guides and springs
Ready to use.1950 -

Condition: NOS
Made in England

Condition: NOS
1963 - 1973
Opn: 57-4023 replaces 68-3184

Condition: Used but in very good condition
Fits all types
1962 - 1967
with 5/16" cylinder base studs
(bearings still fitted)
Engine number: A65 D 6583

Condition: NOS
1962 - 1978
Fits all 500 - 650 twins
​Made in England

Condition: NOS
1969 - 1970
Fits all 500 - 650 twins
Casting no: 70-9480
​Made in England

Condition: Used, small crack near foot rest
1962 -
Casting no: 71-1045
Made in England

NOS
Made in England by BSA
Will fit other BSA types
OPN: 57-2652 (part of 57-2649 kickstarter complete)

condition: NOS

condition: NOS

condition: NOS

Condition: Used but in good condition
Early type from 1962-1965
Polished

Condition: Used
1962 -
Cylinder bore 66.3 mm
( + 0.40 o.s) (pistons available)

Condition: N.O.S.
Gearbox camplate
Fits: 500-650 unit twins 1962-1968
Made in England by BSA

condition: NOS

Condition: used + slight crack (see picture 2)
Made in England
For 1962- 500-650 unit motors
OPN 68-0240

Condition: Used but in good condition
1962-1971

Condition: used but v.g.c. polished
Modell years 1964-1971

condition: NOS

type with lighter flywheel

Condition: NOS
1963 - 1973
Also fits A50
Made in England

Condition: Used
Fits: A65-650 Unit twin 1970-1972
Casting nr: 68-44
Bore-size: 75.5mm (+0.020")
Made in England by BSA

condition: NOS

Condition: NOS
14T
1965 - 1971

Condition: N.O.S.
Fits: A65 Thunderbolt 1962, will fit A50 as well (part no. 68-223)
Made in England by BSA

condition: NOS
spring included
models: A65T, A65L, A65FS 1971-

Condition: New stock
75 mm + 0.20" o.s
Compression ratio 9:1
Made in AustraliaFits BSA A65
1962 - 1973Priced and sold per set.

Condition: Used but in reasonable condition
1971-
Casting no: 71-2204
Made in England

Condition: Used but in good condition
1971 O.I.F.
Clutch lift mechanisme included

used, very good condition
model years : 1971-
fits A65T, L and FS models

NOS
Made in England
Fits: A50 - A65 1966-1967
Casting number 68-729
OPN 68-0729

Condition: New stock
1950 - 1957
plunger types
Made in the U.K.

Condition: NOS
1956 - 1962
Made in England

Condition: NOS
1954 - 1957
plunger & swingarms

Engine gasket set complete
Fits A7 1947-1950
NOS
Made in England by Payen

Condition: NOS
Fits A7 StarTwin 1951 - 1954
A7 Shooting Star 1954 and onwards
Made in the UK

front only
used, in good condition

Condition: Used, but very good
1950-1954 (unit consrtuction)

Condition: N.O.S.
Set of 6 steel clutch plates
1x thick + 5x thin
Fits: A7 plunger + A10 plunger 1950-1957
Made in England

Condition: N.O.S.
Set of 5 plates
Fits: BSA singles & twins M20, M21, A7, A10 S.Arm, M33, B33, B34, C10, C11
Made in Italy by Surflex

Condition: NOS
Fit: BSA
C10 - C11 1946 - 1953
B31 - B32 1946 - 1957
M20 - B34 1948 -
M33 - B33 1957 OPN 67-3242
A7 - A10 swing-arm type 1948 - 1957
Made in the USA Priced and sold per set

New stock
Made in England
Fits A50-A65 1962-1972
Replaces OPN 42-3192

Condition: New stock
75 mm + 0.40" o.s
Compression ratio 7.5:1Fits BSA A65
1962 - 1973Priced and sold per set.

Condition: New stock
75 mm + 0.60" o.s
Compression ratio 9:1Fits BSA A65
1962 - 1973Priced and sold per set.

NOS
Made in England
For BSA A7-A10 pre-units twins
1952-1962
Lenght 52 pitches
BSA part no.: 67-296

Condition: NOS
Complete with HT lead & clamp
6 volt
1958 - 1965