PD-M9100 
 
Wider contact area provides a solid pedal / shoe interface and efficiently transmits power
Cylindrical contact area repels better mud for consistent bike up and down
2 axle length options Crack surface - Pedal center: 52 mm, 55 mm
Efficient pedaling and better bike control
Better mud elimination
Effortless pedaling
Longer shaft durability
 
 PD-M9120 
 
Larger, longer contact area provides a solid pedal / shoe interface and efficiently transmits power for greater bike control
Optimized to work efficiently with ME and AM shoes
Built-in platform not only protects the seat from impact but also makes it easier for you to ride the bike as a guide
Greater bike control
Pedal Concentration
Longer shaft durability