






Shock Preload Booster +4mm
The Shock Preload Booster is a shock spacer that serves the same function as an upretainer. It is used by placing it between the spring and the adjustment dial or the retainer. Ideal for applications such as increasing preload, raising the vehicle height, or lifting the dial position that has dropped too low.
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Shock Preload Booster +4mm
Choose your Color
Free shipping from €150 purchase in France