not sure about a K3 but i de restricted my own- after my 2 years of course...
wa just pet tank off...air box off... to reveal the 2 carbs...loosen the circlips and bob off the whole gold/silver carb aseembly..flip out the 2 washers with the restricting narrower gauge...and lob it all back together and voila !! you now have circa 69BHP...instead of 33...
and now all u need to do is tone ya neck muscles up !! cos its hell f a difference and knocks ya back a bit at first....but the 140 is awesome ..and acceleration hellishly better!!.
dont let anyone tell ya that its only top end that is diff when restricted!!
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