Premium KONI Frequency Selective Damping (FSD) rear shock for Ford F53 Class A motorhome chassis — V8 (1988–1998 and 2021+) and V10 (1998–2020). Direct OEM replacement. 19.15mm eyelet upper and lower mounts. 8 lbs.
The Koni 8805-1019 FSD Rear Shock is the definitive rear suspension upgrade for the Ford F53 Class A motorhome chassis — covering the full production span from the 1988 V8 era through the V10 generation and into the current V8 return. The F53 is by far the most widely used Class A motorhome chassis in North America, underpinning models from virtually every major RV brand at every price point.
The F53 rear suspension, while robust, is particularly susceptible to the effects of worn shocks: rear-end bounce over expansion joints, body sway during lane changes and in crosswinds, and the rear "waddle" that becomes increasingly pronounced as OEM shocks age. KONI's FSD technology addresses all of these — providing firm rear damping when it matters most while automatically softening to preserve ride comfort. The result is a coach that feels planted and stable on the highway without the harsh ride of an overstiff shock.
Automatically firm for control, automatically soft for comfort — handles the F53's rear-end bounce, sway, and winding road instability without compromise
Covers V8 (1988–1998 and 2021+) and V10 (1998–2020) — one rear shock for the full F53 production history
Special internal valve blocks road vibrations and noise before they reach the coach — dramatically quieter and smoother long-distance travel
Delivers stable, controlled handling on winding and narrow roadways where an uncontrolled rear axle makes a large Class A feel intimidating
V8 Return in 2021: The product description states "99-up V10" but the full fitment confirmed by SuperSteer covers the original V8 (1988–1998), the V10 (1998–2020), and the returned V8 (2021–current). This shock fits all F53 engine variants and all GVWR ratings throughout the F53 production span. Sold Individually: One shock absorber per package. Order qty 2 for a complete rear axle replacement.
⚠️ Before Installation — Critical Stroke Check: With the vehicle at proper ride height, measure the distance between the shock mounting points. Then collapse and extend the new shock fully and measure both extremes. The shock should be near the center of its stroke when installed, with at least 3" of stroke available in either direction. If this clearance is not met, do not install — the shock could break and the warranty will be voided.
FSD Shocks Are Self-Adjusting: Gold-colored KONI FSD shocks automatically adjust their damping — no manual adjustment is needed or possible.
Full installation instructions PDF: supersteerparts.com/content/koni-shock-install-instructions.pdf Technical support: SuperSteer · 888-898-3281
In The Box (Qty: 1 Shock Absorber): • KONI 8805-1019 FSD Rear Shock Absorber NOT Included: • Mounting Hardware • Second shock (sold individually — order qty 2 for a complete rear pair)
KONI 8805-1018 — FSD Front shock for Ford F53 V8 (1988–1998, 2021+) and V10 (1998–2020); also fits Tiffin Allegro Breeze Powerglide (2010–2012) KONI 9905-1029 — EVO FSD Rear shock for Ford F53 (same dimensions as 8805-1019; upgraded EVO technology for larger, heavier coaches) For a complete F53 Class A suspension upgrade, pair this rear shock (8805-1019) with the matching front (8805-1018). Owners of larger or heavier coaches may prefer the upgraded EVO version (9905-1029) at the rear.
SuperSteer Parts Technical Support: Website: supersteerparts.com Phone: 888-898-3281 KONI Warranty: Please refer to KONI warranty documentation included with product or available at koni-na.com. Does not cover mounting hardware or bushings.
The 8805-1019 fits the following Ford F53 chassis configurations at the rear axle position. Covers all GVWR ratings across all engine variants. Sold individually — order two for a complete rear replacement.
⚠️ Fitment cross-referenced across SuperSteer Parts and ShockWarehouse. Note: the product description references "99-up V10" but the confirmed fitment from SuperSteer covers the original V8 era (1988–1998), the full V10 span (1998–2020), and the returned V8 (2021–current) for all GVWR ratings. Always verify your specific chassis year and engine before ordering.