Product Specification
Model Number: BR-IM31-R
Series: Shimano products.
Rear: Yes.
Structure Type: Normal.
Stopping Power (*1): 0.9
Cooling Fin Diameter: 3.5 inches (90 mm)
Heat dissipation (*1): less than 1
No cooling fins: Available
Wheel size (inch): Tire outer diameter (mm): 26 - 28 inch: Yes.