The Kyosho W5312-02 DC13 Shock Collar is a genuine replacement for the Ultima RB7.5 series, intended to assist precise suspension adjustment. It allows you to set and repeat preload positions so the car responds predictably across laps. Made to cope with frequent adjustments, the collar supports consistent damper geometry and reduces setup variation. A practical spare for racers and keen hobbyists focused on handling control.
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