This is the throttle cable you need if you are using an HIF4, -38, -6, or -44 on your right hand drive Mini. Typically after 1990.
The outside of this cable is 66.5cm in length (aprox. 26").
See SBB10126 for LHD.

This is (NAM7914) the standard length throttle cable for the mini 24" long. A longer (31") heavy duty cable is the C-AHT85. 
SBB10099 is used for RHD models with HIF Carb
SBB10126 is used for LHD models with HIF Carb 
SBB10186 is used on LHD Single Point Injected models 
SBB103720 is used on LHD Twin (Multi) Point Injected models
SBB103400 is used on RHD Twin Point Injected models
SBB10187 is used on RHD Single Point Injection models

Right hand drive twin point Mini throttle cable