2026 Tiffin Motorhomes Allegro Bus 45 OPP, Key Features of the New 2026 Tiffin Motorhomes Allegro Bus 45 OPP PowerGlide® raised-rail diesel chassis with Cummins L9 450 HP engine Quad slide-outs for expansive residential living space Bath-and-a-half floorplan with walk-in closet 45' luxury Class A diesel motorhome with tag axle Residential kitchen with induction cooktop, dishwasher, and large refrigerator King bed in rear master suite with washer/dryer Heated tile floors and hydronic heating system 10.0 kW Onan Quiet Diesel generator Up to 257 cu. ft. basement storage 15,000 lb. towing capacity Discover the New 2026 Tiffin Allegro Bus 45 OPP The 2026 Tiffin Motorhomes Allegro Bus 45 OPP represents the pinnacle of luxury diesel motorhome living. At a full 45 feet long with four slide-outs, this flagship coach delivers a true residential experience combined with industry-leading performance and craftsmanship. Built on Tiffin s exclusive PowerGlide raised-rail chassis and powered by a 450-horsepower Cummins diesel engine, the 45 OPP offers smooth handling, powerful towing, and long-distance confidence for serious travelers. Expansive Living with Premium Comfort Inside, the quad slide-out design creates an open, inviting space perfect for entertaining or relaxing. High-end finishes, panoramic windows, and premium furnishings give the coach a luxury residential feel. With multiple seating options and a spacious living area, this motorhome is designed for comfort whether you're hosting guests or enjoying quiet evenings on the road. Gourmet Kitchen for True Residential Living The Allegro Bus 45 OPP features a fully equipped kitchen built for real cooking: Induction cooktop and convection microwave Dishwasher drawer for convenience Residential refrigerator Solid-surface countertops and generous pantry storage This space is ideal for everything from quick meals to full-course dinners. Private Suite and Bath-and-a-Half Luxury The bath-and-a-half layout provides added convenience for both owners and guests, while the standout walk-in closet in the master suite sets this floorplan apart. The rear suite includes a king bed, expansive wardrobe storage, and a private full bathroom creating a true retreat on the road. Built for Performance and Full-Time Travel With a tag axle, air ride suspension, and advanced driver-assist features, the Allegro Bus 45 OPP delivers exceptional stability and control. Features like hydronic heating, heated tile floors, large tank capacities, and a powerful generator make it ideal for full-time RV living or extended luxury travel. Why Buy the 2026 Tiffin Allegro Bus 45 OPP Flagship 45' luxury diesel motorhome Unique walk-in closet floorplan for maximum storage Expansive quad-slide living space