Fit the GPM BBS001B Brass Spacer Set to add concentrated mass inside coil springs, helping shocks with a spring inner diameter of 13mm, a damper rod diameter of 3mm, and a ball end outer diameter of 7mm perform with more consistent action.
Made from solid brass, each spacer weighs 5g and brings extra preload stability to the spring stack. These spacers help reduce spring oscillation and give hobbyists a simple tuning option to refine handling and on-track balance.
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