| Until they have an official policy of replacing the product in the event that they sell one that has been designed in house that they later discover to be defective or flawed in design, I wouldn't waste my time looking at any of their offerings. SPL parts has a trade up program for when they come out with a newer designed component.  Z1 could at the very least start with that. I've been burned several times with Z1 silicone lines.  As have many others.  How about the throttle bodies which are even costlier? 
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