2015 Cornerstone

In a class of its own

You'll rule the road thanks to the 2015 Cornerstone's Cummins ISX 600 HP turbocharged engine. And with Cornerstone's well-appointed interiors, you'll rule it like a king: Enjoy quartz countertops, heated porcelain bathroom flooring, a cedar-lined walk-in wardrobe and gourmet kitchen. 

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Ward = wardrobe

Lav = bathroom sink

Med = medicine cabinet

Ohc = overhead cabinets

Fridge = refrigerator

Micro = microwave

Exterior Graphics

Standards & Options


Air Connection Remote air connection
Alternator 210-amp alternator
Braking System Air Disc brakes on front and rear; All-wheel ABS brakes; Three-stage Jake brake; Pre-wired for electric brake controller
Chassis Spartan K3 chassis
Chassis Battery 2
DEF Tank 15-gallon DEF tank
Engine Cummins 15 liter ISX turbocharged 600 HP engine 1,950 lb-ft torque at 1,200 RPM
Engine Block Heater Yes
Front Axle Reyco Granning front axle 20,000-lb. wide track
Front Suspension Reyco Granning IFS independent front air suspension
Fuel Tank 150-gal. fuel tank (dual fill)
Hitch 20,000-lb. hitch with 7-pin plug
Radiator Side-mounted radiator
Rear Axle Rear axle 20,000-lb., tag axle 14,000-lb.
Rear Axle Ratio 4.30 "Quiet-Gear" rear axle ratio
Rear Suspension Ridewell 246 rear air suspension
Shocks Front/Rear; 60 mm heavy duty
Tag Axle Tag axle auto weight release