BSA Singles Parts & Spares
BSA built single-cylinder motorcycles for the best part of half a century, from the side-valve M range through the B-series pushrod machines to the unit 250s and the B50. This page collects the stock that spans several of those models rather than belonging to one: bearings, carburettor parts, ignition kits, gaskets and the hardware that was shared across the range.
Obsolete Bike Parts lists over fifty items here, alongside the model-specific pages where the rest of our BSA stock sits. Between them they cover most of what a single-cylinder rebuild asks for.
-
-
-
-
-
-
-
-
-
-
-
-
-
€ 37,00 Select options This product has multiple variants. The options may be chosen on the product page -
Start with the model page if you know the model
If your machine is a C15, a B31, a B44 or an M20, the model page will be quicker and the fitment note will be more precise. This page is the place to look when a part carries several model numbers, when you are working on something rebuilt from more than one machine, or when you are not yet sure what you have.
What sits under BSA singles
- Bearings and bushes — big end assemblies and main bearings for pushrod and unit singles
- Carburation — Amal Monobloc and Concentric carburettors, jets and repair parts
- Ignition — points and coil parts, electronic ignition kits, magneto and dynamo components
- Engine — valves and guides, gasket sets, crankshaft assemblies, timing parts
- Cycle parts — handlebars, cables, brake components, fasteners
- Manuals — workshop and parts literature covering the single-cylinder range
Tell us what you are rebuilding
Frame and engine numbers settle most fitment questions on these machines in a single message, and a photograph of the old part settles nearly all of the rest. That is a great deal quicker than reading a part number off a component that was fitted by somebody else thirty years ago.