throttle tube

My throttle tube cracked, on the way to work opening the throttle was heavy, now I know why.

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Are the stock throttle tubess any stronger than the heated grip tubes? The reason I ask is that I I am interested in putting some heat demons in my bars but have no interest in my throttle tube breaking.

Those of you with heated grip issues might be interested. Biltwell 1" Whiskey Throttles For Harley but iirc Harley tubes fit.

What fits our r3s? I've heard Harley throttles will work. If so what years? I saw that biltwell and joker machine both make a bullet tube. Will these work?

When I bought my 2014 Roadster it came with Kuryakyn ISO grips and I'd like to go back to stock. Does anyone have their stock setup that they'd like to off load? I'd love to get the bar end weights with it as well if that's possible. Anybody?

I'm not much of a fan of the Kuryakyn grips and it doesn't seem like there are many options for the R3. Does anyone know if someone makes a throttle tube for the rocket? I've seen some say they've had success mounting harley grips as well. Does anyone know what is involved? Any modifications...