Greetings Tim,
On my Beta Alp 4.0 I have replaced the standard gear lever for a genuine Suzuki DR 350 lever, which is made of steel rather than the Beta alloy cast item. It is slightly shorter in length which I hope will protect it, especially when riding in ruts.
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Beta 400 gear lever.jpg [ 529.41 KiB | Viewed 7059 times ]
I have changed the footrests too for some which are wider, basically because as you know I stand up a lot when riding, but which makes gear change slightly less convenient. I have not found a shorter replacement rear brake lever, the original initially caught on the replacement alloy bash plate I fitted but I simply carved a larger arc out of the top edge.
TTFN
Hugh.