SRC upgrade rear centre shaft for the Losi 5T 1.0, comes complete with new boot, CV Barrel and pin. These pair perfectly with the SRC Front center drive shaft SRCB3218

These are compatible with the stock Losi drive cups and the IRC UHD Steel cup set: IRC4022.

These may have some compatibility issues with drive cups from FLM due to the increased size of the ball on the end of the dog bone.