I think you mean triple clamps with "adjustable offset". These are needed on KTMs on most model years because they don't steer well stock.
The steering geometry of the gasgas is praised by owners because it strikes a perfect balance of "carve-ability" and "stability". Unlike the KTM, you don't have to buy new triple clamps to "fix it".
Aftermarket triple clamps are made for the gasgas to provide more flexibility in handlebar positioning, etc., particularly with taller riders. These are made by BRP, etc. Currently gasgas provide two mounting holes with shims to adjust height - so, in most cases, even a tall rider can be satisfied with the stock upper clamp.
jeff
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