They changed a few things on the 2019 Quatro. Enough so that buying last year's model will likely yeild a different experience. Here are some of the changes:
- New dimension to the collar to help with better sting dampening.
- Decreasing the swing weight by a couple percentage points.
- Moving the inner barrel towards the middle.
The 2019 change also improved the durability. Early reports show the bat is holding up a bit better. The 2018 version was notorious for cracking early. But, before you get the impression we think that is a bad thing, the bat was crazy hot.
BBCOR and USA exit speeds showed top of the class.
As such, we'd recommend the 2019 version over the 2018 version---although the price gap may be tempting. Of course at some price the 2018 version is a fantastic get---especially in the BBCOR space. But, in terms of a used 2018 USA bat on ebay, we would avoid this time around.