Wow, a technical question on here that I'm actually able to help with. This is exciting!I'm upgrading cranks on the new Trail 429. The Super Boost spindle (142.5 mm) is installed on the crankarm. Thank you to Pivot CS for guiding me through those questions.
How many spacers and widths are needed on each of the drive/non-drive sides?
My X01 cranks broke at Killington Bike Park and I didn't have many options so went with RF Atlas on my Mach 6. You'll need 3 24mm (inside diameter) spacers on each side. RaceFace sells their own. They're red. Good luck!