2015 specialized stumpjumper expert EVO Not Boost / 12 x 142 home built fattie lightbicycle 35 mm rims DT Swiss 240s non-boost 12 x 142 rear hub xt drivetrain deore brakes wtb trailboss 3.0 and breakout 2.5 rear 27.5 dropper post transition saddle easton have 35 mm carbon bar renthal stem 35 mm center lock rotors shimano santa cruz grips this bike rips like a downhill bike