The motorbike rear shock spring adjustment spanner from NAC Tools is designed to make adjusting the rear suspensions spring collars fast & easy while the rear shock is in place on the dirt bike. Setting the suspension sag correctly is very important this is set off the riders weight, when set correctly this will improve the riders feel and the bikes handling.
Once the desired shock ring size is set the NAC Tools spanner it will stay set until it is move by the hand to another size. It will not flop around once set to a size due to its self-locking style head.
Please check fitment - Made for Japanese models may not work on some European models