An uncompromising range to win BMX races MORE PERFORMANCE Tubeless Ready technology reduces rolling resistance for optimal performance MORE GRIP The MICHELIN Pilot SX has been designed for extra grip while cornering, particularly on hard-packed or dusty terrain More informations on MTB technologies For more informations on MTB technologies Click here MICHELIN® PILOT SX RACING LINE 44-406 (20X1.70) ETRTO Size 44 - 406 Weight (g) 400 Pressure (BAR) 5/2 Pressure (PSI) 73/29 Bead Foldable Bead Tube G4 Colors Black