The TAMIYA CC01 Adjustable Steel Main Shaft Kit by GPM SCC037LSAN is engineered for durability and improved steering geometry on long chassis CC01 builds. The assembly combines aluminium 6061 T6 components with hardened steel #45 where strength is required, reducing unsprung and rotating mass to aid runtime. The universal swing shaft cross head increases attainable steering angles for technical crawling, while white silicone O-rings provide isolation between mating surfaces to limit wear. Overall length is 152mm, compatible with long chassis configurations using a 265mm wheelbase.