Install the GPM BBS001B Brass Spacer Set to add controlled weight within the coil spring, which helps dampers with a spring inner diameter of 13mm, a damper rod diameter of 3mm, and a ball end outer diameter of 7mm retain stable spring action under load.
Produced in brass, each spacer weighs 5g and provides additional inertia to the spring assembly. These spacers are an easy tuning aid for enthusiasts wanting crisper rebound control and steadier handling across varied surfaces.
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