I am selling a Kawada RGT18 rear shaft set for the M300GT. It can be used as a spare part for the M300SR. This is a rear shaft for the M300GT, made of hardened and polished stainless steel, offering excellent strength and precision. The increased weight of the rear shaft is effective in securing rear grip on low-grip surfaces. [Applicable models] ・M300GT ・M300GTR ・M300SX *Please note that the hex portion may be aluminum (silver) depending on the production lot. The current product has an aluminum hex portion.