Must Watch! Ederson – Master Bikes Posted on February 20, 2013 by Effraim — 14 Comments ↓ master bikes sampa-frame 2013 from EDERSON FERREIRA on Vimeo. Brazil in the house!! Some crazy seat stand concepts in this new Master Bikes edit from Ederson!! Standouts for me at 0:10, and 00:39. Check it!!