Yeti SB135 'Party Wheel' Play MTB Tech Talk Round

Yeti's SB135 is a radical mix of retro and cutting edge. While everyone else is either putting their 27.5in 'party wheel' at the back in a Mullet/MX set up or leaving the 'party' behind altogether on twin 29ers, Yeti have launched the SB135 with 27.5in wheels both ends. However they've combined that retro move with some other really smart innovations and modifications so what are the tech details that make it special?
Thanks to Yeti Cycles UK for bringing me the bike to ride and for supporting the video. Big thanks to Giro Cycling UK, Peaty’s Products, Enduro Bearings, Crud XL Fenders, Torq Nutrition and Hebtroco for supporting the channel long term. And to my Patreon supporters for their invaluable monthly pledges.
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Guy