gearchange circlip size

[britishgas]

what is the inside diameter of the circlip which holds the gear stick in place on A 2012 300 please

 

[(F5)]

- Almost the right size to hold onto the ill-conceived groove on the shaft.

Sorry its probably hard to order that as a part number

 

[einsteingarage]

Same I as ktm I think 1x12mm