The surplus 10if youre looking for one bike that can do it all from aggressive climbs to technical descents all day excursions to leisurely trail rides the surplus 10 is the model for you it comes complete with schwalbes three inch rocket ron tires as well as a rock shox yari 275 fork and a drivetrain comprised of shimano xt shifters and derailleurs and a race face turbine crankset shimanoraceface 1x11 speed drivetrainthe shimano xtraceface drivetrain is the perfect combination of pe