| Diagram | Fig. 5 — CYLINDER BLOCK AND HEAD TR7RV · ref 18 |
| Subsystem | engine top |
| Listed in parts books | 1974, 1976–1979 |
VALVE SPRING CUP T140 73-
Valve spring cup for the T140 and TR7RV cylinder head, fitted from 1973 onward.
This is the valve spring cup used in the cylinder head on the T140 and TR7RV engines from 1973 onward. It sits under the valve spring in the top end, giving the spring a proper seat to bear against so it compresses and returns the valve correctly as the cam works the tappets.
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It shows up in the cylinder block and head listings alongside the manifold and tappet parts, which tells you it lives right in the valve train assembly rather than being a standalone accessory item. Since it appears across multiple head figures for these later 750 twins, it's a piece worth having on hand if you're doing valve or spring work rather than something you'd normally replace on its own.
We don't have more detail on this one beyond what the catalog shows, but if you're rebuilding a T140 or TR7RV top end, this cup goes with the valve springs you're already pulling. Call the shop if you want us to confirm which position it fits before you order.
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