# Jayco Seismic 405

> Toy hauler

405 is a fifth wheel floor plan by Seismic (Jayco).

## Specs (2025 model year)

| Spec | Value |
| --- | --- |
| Length | 41 ft 6 in |
| Sleeps | 8 |
| Slide-outs | 0 |
| Dry weight | 13,850 lbs |
| GVWR | 17,995 lbs |
| MSRP | $108,293 |

## Model years

2025, 2024, 2022. Year-specific specs: `https://rvenvy.com/fifth-wheel-trailers/jayco/seismic/405?year={year}`

## Overview

The Seismic 405 is a full-on luxury toy hauler that doesn't ask you to sacrifice comfort for cargo space — the front bedroom keeps sleeping quarters private and away from garage noise, while the loft adds a separate zone that works for sleeping or gear storage. A kitchen island and bath and a half elevate the living area well beyond typical hauler fare, and two entry/exit doors make moving between the garage and main cabin genuinely convenient. Jayco builds the Seismic line with a 102-inch wide body, ramp patio, and six-point hydraulic landing gear, which gives it a planted, livable feel in camp — just know that prospective buyers consistently recommend a thorough pre-purchase inspection, as build quality and service experiences on the Seismic line vary widely.

## Floor plan tags

bath and a half, loft, toy hauler, front bedroom

## Inventory

No units currently for sale. Search similar inventory: https://rvenvy.com/inventory

Floor plan diagram: https://images.rvenvy.com/509392eb775e4c631037b97ea5a1ae96ad69bcd16c832f33cedc1eadfe1c07e5/1024.webp

Canonical page: https://rvenvy.com/fifth-wheel-trailers/jayco/seismic/405