BSA B25 Starfire Parts & Spares
The B25 is the 250 unit single BSA built at the end, sold as the Starfire and the B25SS, and badged by Triumph as the T25 and TR25W. One engine, several tank badges, and a parts list that mostly does not care which one you have.
Obsolete Bike Parts holds over 60 line items for the 250 unit single, most of them common to the BSA and Triumph versions alike.
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- € 37,00 Select options This product has multiple variants. The options may be chosen on the product page
B25, T25 and TR25W
These are the same machine with different badges and detail fittings. Our listings name every version a part suits, which is why so many of them read BSA and Triumph together. The Triumph-badged bikes have their own page under T25 and TR25W.
What we stock
- Bottom end: crankshaft assemblies, big end shells, gasket, oil seal and O-ring sets
- Top end: valves and guides, complete rockerboxes, copper cylinder head gaskets
- Transmission: complete gear clusters, mainshafts and gears, sleeve gears
- Chassis and instruments: bottom yokes with stem, tacho drive bodies and shafts
Up the range
The larger unit singles use some of the same components. If you are working on a 500 rather than a 250, look under BSA B50MX as well.