Speedometer Gearbox 15:12
To fit BSA A75 Rocket 3 (1967-70)
Triumph T120/TR6R (1966-70), T150 (1968-70).
This gearbox is brand new production and has been carefully hardened to slightly exceed the OEM specifications for increased longevity.

For models fitted with Magnetic type speedo's after 1966.
Centre hole size : 3/4"
Ratio 15:12
Smith's No : BG5330/168 
  
OEM:  19-9217,60-0637