M8 Softail with 21" front wheel: 20-24 (NU) FXST Softail Standard; 18-20 (NU) FXBB Street Bob 107; 21-24 (NU) FXBBS Street Bob 117; 25-26 FXBB Street Bob 117. Dyna: 06-17 Dyna (excl. FXDWG, FXDF, FL