Koni Ford F53 Chassis Front EVO FSD Shock - 9905 1028

The Koni Ford F53 Chassis Front EVO FSD Shock (Part # 9905 1028) is a purpose-built, high-performance monotube shock absorber designed specifically for Class A motorhomes riding on the Ford F53 chassis. If you've been searching for a meaningful upgrade over stock dampers on your F53-based coach, the KONI EVO FSD represents one of the most significant advances in F53 shock technology in recent years — featuring a larger-bore piston design that builds directly on the proven KONI FSD (Frequency Selective Damping) platform.

Key Features & Benefits

• EVO-Series Large-Bore Piston Design: The KONI EVO FSD uses a larger bore piston than the previous 8805-series FSD shocks, delivering enhanced damping force and more precise body control — critical for the significant weight and height of a Class A motorhome.
• Frequency Selective Damping (FSD) Technology: KONI's proprietary FSD valving automatically adjusts damping based on the frequency of road inputs. Small, high-frequency bumps (road texture, expansion joints) pass through with minimal resistance for a comfortable ride, while larger, low-frequency body motions (sway, dive, squat) are damped firmly for safety and control.
• Custom-Tuned Valve Stack with Large Piston Holes: The custom valve stack and enlarged piston orifices work together to deliver extra body control exactly when you need it — during lane changes, wind gusts, and sudden maneuvers — without introducing undue harshness on smooth roads.
• F53-Specific Engineering: This shock is purpose-engineered for the Ford F53 motorhome chassis, not a generic fitment. The mounting dimensions, travel, and valving are matched to the geometry and weight demands of F53-based coaches.
• Dual Eye-Mount Design: Both the upper and lower mounts feature a 3/4-inch (19.15 mm) ID eye, ensuring a straightforward, bolt-in installation compatible with F53 factory hardware.
• Drop-In Replacement: With expanded and retracted lengths matched to OEM travel specifications, this shock installs without chassis modifications, making it a practical upgrade for RV owners and technicians alike.

Specifications

• Part Number: 9905-1028
• Brand: KONI
• Position: Front
• Expanded Length: 28.75 inches
• Retracted Length: 17.5 inches
• Upper Mount: 3/4 inch (19.15 mm) ID Eye
• Lower Mount: 3/4 inch (19.15 mm) ID Eye
• Weight: 12.50 lbs
• Quantity: Sold individually (one shock per order)
• UPC: 871216718622

Fitment

The KONI 9905-1028 front EVO FSD shock is designed to fit the Ford F53 chassis from 1999 through 2024, covering both the V8 and V10 engine variants across all coach GVWR ratings (16K–18K, 20K–22K, and 24K–26K). This makes it compatible with a wide range of Class A motorhome brands built on the F53 platform across more than two decades of production.

Confirmed fitment years include: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, and model years extending through 2024 per manufacturer data. If you are unsure whether your specific coach and GVWR are covered, contact the ThreePiece.us fitment team before ordering. This part number covers the front axle position only — a separate part number (9905-1029) is used for the rear.

What's in the Box

• 1x KONI EVO FSD Front Shock Absorber (Part # 9905-1028)

Note: Shocks are sold individually. Purchase two units for a complete front axle replacement.

Why Buy from ThreePiece.us

• Free Shipping: Free shipping is included on every order — no minimum required.
• Affirm Financing: Spread payments over time with Affirm financing, available at checkout. Upgrading both front and rear shocks on your F53 motorhome is more manageable when you can lease-to-own on your schedule.
• Expert Fitment Support: ThreePiece.us has served 10,000+ customers and maintains a team of fitment specialists reachable by phone at 813-535-5801 or by email. If you have questions about whether this shock is correct for your specific F53 year, GVWR, or coach brand, get in touch before you order.
• In-Stock Availability: This product is regularly stocked, so you won't face the extended wait times associated with special-order or back-ordered suspension parts.

Frequently Asked Questions

Q: Does this shock fit both V8 and V10 versions of the Ford F53?
A: Yes. The KONI 9905-1028 is listed for both the Ford F53 V8 and F53 V10 variants across the supported year range (1999–2024), as well as all three coach GVWR classifications (16K–18K, 20K–22K, and 24K–26K).

Q: Is this the front or rear shock? Do I need a different part for the rear?
A: This is the front shock only. For the rear axle, a separate KONI part number (9905-1029) is required. If you are replacing all four corners, you will need two units of 9905-1028 (front) and two units of 9905-1029 (rear), as shocks are sold individually.

Q: How does the EVO FSD compare to KONI's older 8805-series FSD shocks for the F53?
A: The KONI EVO FSD features a larger bore piston than the 8805-series FSD shocks. This larger piston, combined with a custom-tuned valve stack and enlarged piston holes, is designed to provide greater body control — particularly beneficial for the size and weight of a Class A coach — while retaining the frequency-selective damping behavior that makes KONI FSD shocks well-regarded in the RV community.

Q: How many shocks do I need to replace the front suspension on my F53 motorhome?
A: You will need two (2) units of Part # 9905-1028 to replace both front shocks. Add two to your cart, or contact the ThreePiece.us team at 813-535-5801 if you need help putting together a complete front and rear shock package for your F53.