New-gen petcock is vacuum-operated just like pre-gen. Has PRI position for draining tank easily. It's also compact and fits fully under tank. Doesn't have knob to bump into tank like aftermarket petcocks that are too short to clear side of tank.
However, lack of reserve means you don't get warning when running low. I use mileage of 230-250 miles as time to fill up depending upon how hard I've been riding.
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