In sports like skateboarding or fingerboarding, "tranny" is shorthand for "transition" (the curved part of a ramp or bowl). "Tranny perfect" describes a ramp with an ideal radius for maintaining speed and "flow."

: A surface treatment (like the wood on Blackriver Ramps ) that minimizes friction, ensuring the board's "tranny" performance remains consistent.

: A curve meticulously designed to allow for "perfect" vertical air or smooth lip tricks without "kinking" at the bottom.