The higher stiffness is due to more material and thus the spoke is slightly heavier. the elliptic shape of 2,3/1,2 fits in all standard hub holes. Some professionals use the CX-Sprint on the drive side and the CX-Ray on the non drive side. This creates equal stiffness on right and left side in one wheel.
+ Aerodynamic eliptic spoke
+ Special alloy treatment and sophisticated production
+ Diameter: 2.0 - (2.25 x 1.25) - 2.0
+ Length: 145-310 mm
+ Weight: 334 g (64 x 260 mm)
+ Strength on middle section: 1430 N/mm2
+ Produced from high-tensile, fatigue-resistant 18/8 stainless steel conforming to the Sapim quality standards