Heel Support
Accessories Nelo Footrests
This carbon heel support helps lock your heels in place which can provide better power transfer. It fits any K1 and K2/K4 back positions. Screws and rail included.
Check out Ivan's Foot Drive video: https://www.youtube.com/watch?v=2BYRlT9lYoA&list=PLUJ0Ij3ZYveiYQLSuI_5C911MvKDA0i23&index=1&t=10s.