The SOFT INSTEP CLOSURE SYSTEM TECNO-3 PUSH SYSTEM SINGLE TECNO-3 PUSH SIDI HEEL CUP RUBBER TOE The MTB SRS CARBON-GROUND SOLE Most Dual-Retention Bar type MTB Pedals recommend using a reinforcement plate between the cleat and the shoe in order to prevent cracking or denting the sole. The MTB Plate can be replaced in case of damage from the pedal system, so adding the weight of an aftermarket reinforcement plate is optional. The Ground SRS treads, and MTB Plate are easily removable and replaceable. The MTB SRS CARBON-GROUND Sole is toe-spike compatible.