"The PD-R8000 offers top of the line features and incredible value. With a carbon composite body and stainless steel body plate, the pedal is both lightweight and durable. The stiff construction creates a stable pedaling platform for excellent power transfer. Available in standard (52mm) or 4mm longer axle models.
 
Average weight: 255 g (52 mm), 265 g (56 mm)"
 
- Shimano