50mm extra-strong ECS drive shaft for 2mm pin made from world-renowned HUDY Spring Steel. This race-quality drive shaft is a spare part for XRA305333 ECS ES (Extra Strong) Drive Shaft 50mm - HUDY Spring Steel. With the ECS drive shafts, wheel vibration and noise are decreased to a minimum, steering is increased, and cornering speed and smoothness are noticeably increased. Fits XRAY T2 XRAY T2R XRAY T2 007 US Foam-Sp Edition XRAY T2 007 EU Rubber-Sp Edition XRAY T2 008 EU Rubber-Sp 5-Cell Edition XRAY T2 008 EU Rubber-Sp 6-Cell Edition XRAY T2 008 US Foam-Sp 6-Cell Edition XRAY T2 009 EU Rubber-Sp 6-Cell Edition XRAY T2 009 US Foam-Sp 6-Cell Edition XRAY T2R PRO XRAY T3 EU Rubber-Sp Edition XRAY T3 US Foam-Sp Edition XRAY T3R XRAY T3 2011 XRAY T3 2012 XRAY T4 XRAY T4 2014 XRAY T4 2015 XRAY T4 2016 XRAY T4 2017 XRAY T4 2018 XRAY T4'19 XRAY T4F XRAY T4'20 - Alu Edition XRAY T4'20 - Graphite Edition