What sprockets are stock, and what to run?

Stock: EX — 12/48, MX — 14/47.

• 12/48–12/52 — popular for hard enduro: lower current and heat, more economical in slow technical riding
• 13/47 — faster
• 12/52 — for crawling, loses on fast sections

Sprockets are bought from Mayak Lab (KTM ones fit too). Minimum rear is 43 teeth; below that the teeth hit the bolts.