Entegra Coach Cornerstone 45X

Name: Entegra Coach Cornerstone 45X
Brand: Entegra Coach

Class Abuilt 2018–21Better build tierScarce on the used market

WHAT ONE COSTS

$522,000est. used (2021, 5 yr old)

Sticker was $749,730 in 2021 — out of production since 2021, so the used market is the only way to buy one. Estimate assumes a 2021 unit.

THE SPECS

Length44.9 ft

Height (incl. A/C)12.9 ft

Width8.4 ft

Interior height7.0 ft

GVWR54,000 lb

Dry weightnot published

Sleeps7

Slide-outs4

Fresh water100 gal

Grey water62 gal

Black water41 gal

Air conditioning45,000 BTU

Fuel150 gal

Engine / chassisCummins X15 605 HP diesel pusher / Allison 4000 MH / Spartan K3

GeneratorOnan 12,500W diesel with auto-start

A missing row means the maker never published that figure — unknown, not zero.

WHERE PEOPLE SLEEP

1× Walk-around king in rear bedroom(Permanent)72×80
3× Convertible sofa/hide-a-bed seating in main living area(Convertible)—

HOW IT'S BUILT — 4/5

WallsLaminated fiberglass

FrameAluminum

RoofWalk-on

UnderbellyEnclosed

Entegra Coach (Better tier): Thor Industries (Jayco / Entegra Coach, Middlebury IN)

YEAR BY YEAR — WHAT CHANGED

YEARS	GVWR	DRY	MSRP
2018	54,000 lb	—	$692,646
2019–21	54,000 lb	—	$749,730

2018Introduced
2021Last model year

FINDING ONE

Scarce — months of watching; be ready to fly and drive it home. Why: priced at the top of its maker’s range. Estimated from build volume and production span — not a count of live listings.

THE READ

Highest-capacity pre-2021 Cornerstone; superseded by the 45R bunkhouse.

OTHER CORNERSTONE FLOORPLANS

45A · 54,000 lb · sleeps 6 45B · 54,000 lb · sleeps 4 45D · 54,000 lb · sleeps 4 45F · 54,000 lb · sleeps 6 45J · 54,000 lb · sleeps 6 45K · 54,000 lb · sleeps 6 45R · 54,000 lb · sleeps 7 45V · 54,000 lb · sleeps 4 45W · 54,000 lb · sleeps 4 45Y · 54,000 lb · sleeps 4 45Z · 54,000 lb · sleeps 4 the whole line →

Is the 45X your #1 — or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about — set your priorities as sliders and watch the whole market re-rank around them. Nothing gets hidden, everything gets explained.

Rank it against your setup →

Data compiled from dealer and aggregator listings, retrieved 2026-07.