XRAY ECS Drive Shaft long 83mm with 2.5mm pin. The XRAYs unique ECS Drive Shaft equalizes the rate betwixt your drive shaft plus the wheel. With a distinctive 2-piece joint involving the axle as well as the wheel, exactly the same extreme wheel switching angle is split into two shallower views without joint binding. This means that on same cornering rate, the internal wheel won't bind or vibrate. Drive through part is more stable, more precise, and safer to drive. The ECS Drive Shafts help also with improved landing after jumps. Along with the ECS drive shafts, wheel vibrations and sound are reduced to minimal, steering is increased, security of this automobile is increased and cornering speed and smoothness are noticeably increased besides. Invaluable option part.