![Twinseat assy (Black) ] (use with 4 gall tank)](https://ymjiujvqbeioedunvauo.supabase.co/storage/v1/object/public/figures/Triumph_750_Twin_1979-27.png)
| Diagram | Fig. 27 — GAS TANK AND TWINSEAT · ref 24 |
| Subsystem | fuel |
| Listed in parts books | 1979–1980 |
Twinseat assy (Black) ] (use with 4 gall tank)
Black twinseat assembly matched to the 4 gallon fuel tank, per the 1979-1980 catalog listing.
This is the twinseat assembly listed for use with the 4 gallon tank, finished in black. It shows up in the catalog under GAS TANK AND TWINSEAT and TWIN SEAT figures, which puts it right where you'd expect - the two-up saddle sitting behind the fuel tank on the frame's seat rails.
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The catalog ties this particular seat to the 4 gallon tank pairing, so if your bike is running a different tank capacity, check that combination before ordering - seat and tank shapes on these bikes were matched to each other. Our record shows this appearing across catalog entries from 1979 to 1980.
If you're working from an older parts book with a letter-prefix number for this seat, give us a call and we can help sort out whether it's the same physical part before you order.
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