V 20c bottom bracket question

[Midnight]

I’m planning on moving a power meter and crank from another bike to the V20c. I need to change the bottom bracket to accommodate - T47 but which width? CruzBike site says 85 mm BB shell while the bottom bracket comes in 85.5 or 86.5mm. Any advice on what size? Thanks in advance!

 

[Mathew Fy]

I have an 86.5 on mine

 

[Midnight]

BB and 170mm PM and crank moved over from another bike. After a 40 mile ride yesterday I felt the longer crank was better for me - time will tell (73”, 34” inseam,
43.5 ish x-seam)