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Workhorse Custom Chassis held separate “Ride and Drive” sessions for motorhome builders and news organizations June 21-22 to introduce the company’s new 22,000-pound GVWR W22 Class A motorhome chassis at the Transportation Research Center Inc. (TRC) proving ground northwest of Columbus, Ohio.

TheW22 chassis is the heaviest yet from Workhorse and currently is the most substantial gas chassis on the market in terms of gross vehicle weight rating (GVWR).

Its gross combined weight rating (GCWR) is 26,000 pounds.

The W22 is powered by the new GM Vortec 8100, an 8.1-liter gas power plant rated at 340 hp at 4200 rpm and 455 lb.-ft of torque at 3200 rpm. It also uses the Allison Series 1000 5-speed electronic transmission with overdrive disable switch.

The suspension includes tapered multileaf springs, 8,000 pounds in front and 14,500 pounds in back. For brakes, it uses 4-wheel sensor ABS.

The wheelbases are 208 and 228 inches and 22.5-inch wheels are standard, 19.5-inch wheels are available as an option.

A 75-gallon fuel tank is included. Fill-ups are possible on either the left or right side.

Other features include: standard daytime running lights; heavy-duty (130 amp) alternator; improved cooling layout for easier front-end styling; electrical convenience center integrated into the chassis; lowered engine to minimize “doghouse” effect; dual exhaust system with turnout in front of rear axis and new steering wheel.