HPI Shock Shaft 4mm (2pcs) [160187] Tonecheer Its exaggerated proportions retain the

HPI Shock Shaft 4mm (2pcs) [160187] Tonecheer Its exaggerated proportions retain the Its exaggerated proportions retain the unmistakable U boat silhouette while delivering an unusual and enjoyable display build FeaturesNewly designed cylinder head is adopted along with the increased displacementInternal capacity of the combustion chamber has been expanded to achieve a more 4 stroke exhaust sound and power feelComes with an F 4051 silencerDrive washer has been changed to a machined aluminium keyway typeAdditional standard equipment is a set of lock nuts that prevent the propeller from coming offBy increasing the stroke