Step into luxury beyond your wildest dreams in the Cornerstone Reserve, the most exquisite diesel pusher to date from Entegra Coach. With a limited production run of only 20 coaches, the Cornerstone Reserve builds upon the legendary Cornerstone by adding upgraded features and styling to deliver an exclusive masterpiece unlike anything you’ve ever seen before. Designed for those who demand the extraordinary, the Cornerstone Reserve redefines what it means to travel in style and comfort.

Like the Cornerstone, the Cornerstone Reserve is built upon your choice of the Spartan K3 chassis or Freightliner SL chassis. Both chassis features a Cummins 605HP engine, side-mounted radiator, custom-tuned Koni shocks and the Valid™ Truline air leveling system for a powerful and smooth ride you won't find anywhere else. Two incredibly intricate paint schemes, Darknite Blue or Darknite Red, create an awe-inspiring look and make the Cornerstone Reserve stand out in a crowd.

Inside the cockpit, our cab-forward design features a 120-inch windshield, the largest in the industry, for an immersive view of the road. With a heads-up design, the newly updated Safe View dash features a 15-inch digital dash, 15-inch center console infotainment center and tri-pod steering wheel to keep everything at your fingertips while keeping your eyes on the road and hands on the wheel. Safety features include a collision mitigation system with blind-spot monitoring and the Delta Mobile Systems® aiDARS™ 1X active 360° surround view system. These amenities allow the Cornerstone Reserve to deliver the best driving experience in the industry.

Signature features of the Cornerstone Reserve include 50% larger windows for breathtaking views, premium quartz countertops, upgraded tile, and striking ceiling features. Custom Villa Italian leather furniture and upscale Café™ appliances complete the opulent living space, delivering a seamless blend of sophistication and functionality.

With residential hung-wall construction, 5-inch-thick wood floors, cabinets laid before tile installation and three layers of insulation, the true beauty of the Cornerstone is the incredible quality of its hand-built construction. These construction features add to the quiet ride of the Cornerstone and allow us to offer our customers the best warranty in the industry. With a two-year limited and 5-year structural warranty, you will feel true confidence and security in your Entegra Coach Cornerstone Reserve.

The Cornerstone Reserve is more than a motorhome—it’s an exclusive invitation to experience luxury at its finest.

Interior

2026 Cornerstone Reserve - MY25 Cornerstone Reserve FTB WEB

Cornerstone Reserve 45D Interior

2026 Cornerstone Reserve | Cornerstone Reserve 45D Interior

Cornerstone Reserve 45D Interior

2026 Cornerstone Reserve | Cornerstone Reserve 45D Interior

Interior

Exterior

2026 Cornerstone Reserve - MY25 Cornerstone Reserve back WEB

Cornerstone Reserve 45D Rear Exterior

2026 Cornerstone Reserve | Cornerstone Reserve 45D Rear Exterior

Cornerstone Reserve 45D Rear Exterior

2026 Cornerstone Reserve | Cornerstone Reserve 45D Rear Exterior

2026 Cornerstone Reserve - MY25 Cornerstone Reserve dark WEB

Cornerstone Reserve 45D Exterior in Darknite Blue

2026 Cornerstone Reserve | Cornerstone Reserve 45D Exterior in Darknite Blue

Cornerstone Reserve 45D Exterior in Darknite Blue

2026 Cornerstone Reserve | Cornerstone Reserve 45D Exterior in Darknite Blue

2026 Cornerstone Reserve - MY25 Cornerstone Reserve front WEB

Cornerstone Reserve 45D Front Exterior

2026 Cornerstone Reserve | Cornerstone Reserve 45D Front Exterior

Cornerstone Reserve 45D Front Exterior

2026 Cornerstone Reserve | Cornerstone Reserve 45D Front Exterior

2026 Cornerstone Reserve - MY25 Cornerstone Reserve LOGO WEB

Cornerstone Reserve 45D

2026 Cornerstone Reserve | Cornerstone Reserve 45D

Cornerstone Reserve 45D

2026 Cornerstone Reserve | Cornerstone Reserve 45D

2026 Cornerstone Reserve - MY25 Cornerstone Reserve profile WEB

Cornerstone Reserve 45D Exterior

2026 Cornerstone Reserve | Cornerstone Reserve 45D Exterior

Cornerstone Reserve 45D Exterior

2026 Cornerstone Reserve | Cornerstone Reserve 45D Exterior

2026 Cornerstone Reserve - MY26 Cornerstone Reserve 3 4 WEB

Cornerstone Reserve 45D Exterior

2026 Cornerstone Reserve | Cornerstone Reserve 45D Exterior

Cornerstone Reserve 45D Exterior

2026 Cornerstone Reserve | Cornerstone Reserve 45D Exterior

Exterior

Product Videos

ALL-NEW 2025 Cornerstone Reserve Luxury Diesel Pusher

ALL-NEW 2025 Cornerstone Reserve Luxury Diesel Pusher

Premium luxury diesel pusher with meticulous attention to detail throughout every design element representing a new level of coach luxury.

FLOORPLANS

2026 Cornerstone Reserve - 45D

45D

2026 Cornerstone Reserve | 45D

45D

2026 Cornerstone Reserve | 45D

FLOORPLANS

EXTERIOR GRAPHICS

2026 Cornerstone Reserve - Darknite Blue

Darknite Blue

2026 Cornerstone Reserve | Darknite Blue

Darknite Blue

2026 Cornerstone Reserve | Darknite Blue

2026 Cornerstone Reserve - Darknite Red

Darknite Red

2026 Cornerstone Reserve | Darknite Red

Darknite Red

2026 Cornerstone Reserve | Darknite Red

EXTERIOR GRAPHICS

STANDARDS & OPTIONS

Chassis
Spartan® K3 raised-rail chassis
Engine
Cummins® 15 liter X15 turbocharged 605 HP engine with 1,950 lb. ft. torque at 1,150 RPM
Transmission
Allison® 4,000 MH 6-speed transmission
Radiator
Side-mounted, parallel-airflow radiator
Alternator
210 amp alternator
Engine Block Heater
1,500W engine block heater
Engine Brake
Three-stage engine brake
Front Axle
20,000 lb. rating front axle with independent front suspension, integrated anti-sway bar and custom-tuned shocks.
Rear Axle
Dana® rear axle - 20,000 lb. rating
Tag Axle
Reyco® Granning® passive-steer tag axle with onee-touch manual air dump - 14,000 lb. rating
Braking System
All-wheel ABS disc brakes
Rear Axle Ratio
4.30 rear axle ratio
Tires
Michelin® 365/70R 22.5 in. tires (front) and 315/80R 22.5 in. tires (rear)
Tire Pressure Monitoring
Tire pressure monitoring system (TPMS) with temperature monitoring
Traction Control
Automatic traction control
Leveling System
Equalizer™ hydraulic automatic coach leveling
Air Leveling
Valid™ Truline air leveling system with auxiliary air compressor
Air Connection
Remote air connection
Chassis Battery
(2) 12V chassis batteries
Fuel Tank
175 gal. fuel tank with dual fills
DEF Tank
15 gal. DEF tank with dual fills
Tow Air Brake System
Spartan® Safehaul tow vehicle air brake system
Hitch
20,000 lb. hitch with 7-pin plug

Décor Options

2026 Cornerstone Reserve - Luxe

Luxe

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Wood Options

2026 Cornerstone Reserve - Stonewall Matte Grey Maple

Stonewall Matte Grey Maple

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