"We are happy to release the new rear optional drive shafts for the Velox V10. These super-lightweight shafts are CNC-machined from high-quality German aluminum and hardcoated to increase the durability. Compared with the standard CVDs they are about 35% lighter and help serious racers to reduce the rotating mass. Please note that the wheel axles for dogbones (#509203) are needed to use them. The drive shafts are available seperately (#505204) or as a set with the needed wheel axles (#500009)."