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BSA UNIT SINGLES
C15, C25, B25, B40, B44, B441, B50
TRIUMPH TR25W, TR25T, TR50
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We stock most useful parts for these BSA's and Triumphs. The part numbers are confusing. BSA often uses 40-.... and 42-.... and Triumph  57.... and 70-.... for the same part.
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SPROCKET B24/44, TR25W

37-2321/52
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Fits non conical wheels, 5/8 x 1/4" chain, 52T

CONICAL HEADRACES

40-5143CO
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Fit  B25/40/44, price for 2.

WIRE STAYS

97-4048/50
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Headlamp wire stays B25/50 1970-73
These are only suitable for the unit singles. Twins and triples are different

SEAT D10/14, C15, SS90

BS18
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40-9056

RUBBER SEAL IN OIL PRESSURE RELIEF VALVE

70-2793
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ENGINE BOLT SET B25/50 OIF

BSAEBS8
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engine bolt set B25/50 oil in frame 1971-72

ENGINE BOLT SET B25/50 OIL IN FRAME 1971-72

BSAEBS8
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engine bolt set B50 1973

B44 PISTON

ZMCB44
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MC brand piston for B44. New old stock. Very good quality piston made in J.. in the the 70's for a Californian distributor. Complete with rings, gudgeon pin and circlips.
STD IS 78.5MM

WIRING LOOM BSA B25/44, TRIUMPH TR25W

DRB54953459
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GENUINE new old stock wiring loom for 1970 models