Sheldon Brown wrote:
> In the case of non-indexed bar-end shifters, there's no such thing as
> a "front" or "rear" they're just shifters.
But DB say: While this is true if we only consider gear shifting capability, the right hand lever in a set of Suntour bar cons has a left hand threaded expander bolt. In a crash, this allows the lever to be loosened by a sidewards impact, reducing the chance that the lever will be broken off. DB