SIDI Crossfire II SRS Soles & ScrewsReplacement MX Soles (SRSSOLE): Replacement SRS MX soles for Crossfire and Crossfire 2 SRS MX boots Screws required per boot are SRSFASTSCREWF x 5 and SRSFASTSCREW x 12 Black Supermotard Soles (SRSSMS): Now combined with Supermotard soles you can buy one pair of boots for two uses MX or Supermotard extensively tested by SIDI factory riders Red Trail Enduro Soles (SRSTRAILSOLE) Now available is the Trail Enduro offroad sole This makes these boots