T120/TR6, the unit 650cc two cylinders
!
!

Oil pressure switch 26TPI
60-2133
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Fits BSA A50/65 and early Triumphs.
Tapered, conical thread 26TPI.
The later machines use 24TPI, order 60-3719

GEARBOX SPROCKET 650 TWINS
SPR4SP18T
!
Gearbox sprocket for all unit 650 twins 1963-73
Triumph part numbers
18t  57-1917
19t  57-1918

BELT DRIVE
TRIBELT120A
!
T120 belt drive that replaces the primary chain. Light, quiet, strong. Lightweight clutch plates ARE included. German Synchroflex  belt. Clutch drum made of Dural. The belt can run dry (just keep the clutch bearing greased) or in oil.