The Koni 9905-1031 is a rear shock absorber from the EVO99 FSD line, built for Class A motorhome and RV chassis. It uses Frequency Selective Damping, a fully mechanical self-adjusting valve system inside a twin-tube hydraulic damper that raises damping force at low frequencies for body control during cornering and braking and softens at higher frequencies to absorb small road inputs for a smoother ride. The valving reacts automatically to input frequency with no electronic controls. Each shock is sold individually.
| Type | EVO99 FSD twin-tube hydraulic shock absorber (Frequency Selective Damping, self-adjusting) |
| Position | Rear |
| Quantity | 1 (sold individually) |
| Part Number | 9905-1031 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| — | Freightliner | XC Chassis | Class A Motorhome |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
