That's surprising as the 537 is. 13.5 x 16" that's a huge drop in pitch to the 1617. I can't imagine the difference is minimal.
Here's the sizes available off the ACME website

Next jump down in pitch from the 1617 is the 2571 with has a 12" pitch. That would surely increase your holeshot, but I imagine top speed will take a big hit.


Sent from my iPad using Tapatalk