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The KONI 2100 FSD rear shock kit is a twin-tube, non-adjustable hydraulic replacement for 2004–2007 GMC Workhorse W20–W24 motorhome and truck applications. Tuned for controlled ride quality and consistent damping, the gold-bodied 2100 series fits as a direct replacement. Its standard hydraulic design provides a straightforward upgrade when restoring rear suspension performance.
Koni 2100 FSD Rear Kit (Gold) 04-07 GMC Workhorse W20-W24
