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Tiffin Motorhomes Allegro Bay Motor Home Super C - Diesel RVs For Sale

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Make room for more comfort, performance, and longer stays in an Allegro Bay Super C diesel coach by Tiffin Motorhomes. The Freightliner custom chassis features a full-time NoSPIN differential single rear axle so you can navigate tougher terrain, and the 12,000 lb. towing capacity means larger cargo can come along!


Each Allegro Bay is dry camp ready thanks to the 150-gallon fresh water tank, and you'll enjoy more power provided by the AGM extended cycle house batteries, or the optional Lithium Ion house batteries. Handcrafted cabinetry will add to the luxury you'll find throughout the Allegro Bay, and the Spyder Multiplex system with app compatibility puts you in control of all your coach's functions. An all-electric option is also available on this coach and features an AquaHot ultra compact hydronic heating system and an induction cooktop, removing the need for a propane tank. 


Adventure is just a step away with the Allegro Bay Super C diesel coach by Tiffin Motorhomes. Choose a luxurious floorplan today!

Allegro Bay Features:

Standard Features 


Chassis and Drivetrain 

  • Freightliner® S2RV Chassis
  • Two-wheel Drive
  • Cummins® B6.7 360 HP Diesel Engine with 800 lb-ft Torque 1
  • 185-Amp Alternator
  • Allison® 3000 MH 6-speed Automatic Transmission with Lock-up Torque Converter
  • Front and Rear 275/80R 22.5 Tires
  • (2) 12-Volt Flooded Lead Acid Chassis Batteries
  • Hydraulic Leveling Jacks
  • Taper Leaf Front Suspension
  • Freightliner® Airliner® Rear Suspension with Manual Dump Valve
  • Custom Tuned Sachs® Shock Absorbers
  • Eaton Tractech NoSPIN® Differential
  • Front Radiator
  • Full Air Brake System with Automatic Slack Adjusters
  • Heated Air Tanks with Auto Drain Valve
  • Single Stage Variable Geometry Turbocharger (VGT) Engine Brake
  • Manual Parking Brake
  • Automatic Traction Control
  • Cruise Control
  • Rear Stabilizer Bar
  • Tire Inflation Kit with Quick Disconnect Fitting

Wheel Options

  • Aluminum Wheels (Standard)
  • Black Aluminum Wheels (Optional)


  • Seamless One-piece Gel-coat Fiberglass Molded Roof Cap
  • 5 1/4" Formed Roof Insulation
  • Tubular Aluminum Roof Skeleton Frames
  • One-piece Molded Gel-coat Fiberglass Front and Rear Caps
  • Gel-coat Fiberglass Outside Wall Panel
  • Tubular Aluminum Wall Skeleton Frames
  • High-performance Thermal Insulation in Sidewalls
  • Steel Floor Skeleton
  • Engineered Wood Sub-flooring
  • 1 1/2" Thick Thermal Insulation in Floor
  • Steel Basement Construction
  • Rust Protective Undercoating


  • Spyder Controls Multiplex System Featuring App Compatibility
  • 8.0-Kilowatt Onan® Quiet Diesel Generator
  • 2,000-Watt Pure Sine Wave Inverter with Auto-Gen Start
  • (2) 15,000-BTU Air Conditioners with Heat Pumps
  • Extraordinaire™ Air Conditioning System
  • 50-Amp Shore Power with Powered Retract Reel
  • Prep for Satellite
  • HD Over-the-air Antenna
  • Park Cable and Ground Satellite Hook-up
  • Blu-ray™ Player
  • Satellite Receiver
  • 12-Volt Breaker Panel
  • 12-Volt Disconnect Switch
  • Rotary Disconnect Switches for House Batteries, Chassis Batteries, and Inverter
  • Ground Fault Circuit Interrupter (GFCI) Outlets at Galley, Lavatories, and Sewer Bay
  • 110-Volt Exterior Receptacle
  • Surge Guard® Transfer Switch
  • USB Receptacles Throughout Coach

Heating and Cooktop Power Source Options

  • Liquid Propane (LP) Coach (Standard)
  • All-Electric Coach (Optional)

House Battery Options

  • (4) 6-Volt Extended Cycle AGM House Batteries (Standard)
  • (2) 12-Volt Lithium House Batteries (Optional)

Solar Panel Options

  • Prep for Solar Panels (Optional)
  • (3) Solar Panels (Optional)

Electric Add-On Options

  • In-Motion Satellite Dish
  • Cellular Signal Booster
  • Wi-Fi Booster

Liquid Propane Coach Features

  • (1) 35,000-BTU Ducted Furnace (DEP)

All-Electric Coach Option

  • Aqua-Hot 250D Heat Exchanger (DEP)


  • Aqua View Showermiser™
  • Water Filter
  • Water Pump
  • Water Pump Switch Access from Spyder System and Sewer Bay Board
  • Low-point Water Drain Lines
  • Black Holding Tank Flush System
  • Gravity Water Fill
  • Heated Water and Holding Tank Compartment
  • Tank Level Monitor System
  • Exterior Sewer Bay with Winterization System and Gravity Black and Grey Evacuation Ports
  • Exterior Rinse Hose with Shower Head
  • Fresh Water Hookup for City Water and Tank Fill

Liquid Propane Coach Features

  • Water Heater Bypass System (DEP)
  • Truma AquaGo Comfort Instant Water Heater (DEP)

All-Electric Coach Option Features

  • Aqua-Hot 250D Heat Exchanger (DEP)


  • Full-body Paint with (3) Layers of Clear Coat
  • High Performance Protective Film on Front Cap and Select Areas
  • (1) Girard® Side-mounted Powered Patio Awning with Integrated LED Lighting
  • Girard® Slide-out Toppers
  • Side-swinging Exterior Storage Doors with Gas Shocks
  • Lockable Handles on Compartment Doors
  • Motion-sensor Lights in Cargo Bay
  • Pass-through Basement Storage
  • Frameless Style Tinted Windows
  • Exterior Patio Light
  • Driver and Passenger Side Front Cap Exterior Entry Light
  • Daytime Running Lights
  • Heated Power Side-view Mirrors
  • Exterior TV with Soundbar
  • Fast Charge USB ports within Exterior TV Compartment
  • Manual Exterior TV Compartment Door
  • Entry Door Grab Handle
  • Deadbolt Front Entrance Lock
  • Automatic Double Entry Step
  • Front Door Entry System via Key Fob 15
  • Mud Flaps
  • Concealed Air Horn
  • Single-colored Slide-out Endwalls
  • Limited Edition 50th Anniversary Decal

Exterior Color Package Options

  • Barcelona
  • Fire Opal
  • Frosted Granite
  • Glacier Blue
  • NASA
  • White Mahogany
  • Limited Edition 50th Anniversary

Exterior Add-On Options

  • Lippert On-The-Go Telescoping Ladder


  • Carpeted Step Well with Composite Steps
  • Handcrafted Cabinet Fascias and Doors with Concealed Hinges
  • (2) Flat-panel Televisions
  • Solid Surface Galley Countertop
  • Treated Carpet in Slide-out Floors
  • Handcrafted Slide-out Fascia
  • Soft Touch Vinyl Ceiling
  • LED Lighting
  • Prep for Washer and Dryer
  • Carbon Monoxide Detector
  • LPG Leak Detector
  • Fire Extinguisher
  • Solar and Privacy Shades
  • Soft-closing Drawer Slides
  • Powered Roof Vents

Treated Fabric Suite Options

  • Soft Suede
  • Stoney Creek

Ultraleather Options

  • Taupe Hill
  • Trail

Cabinetry Stain Options

  • Sandstone
  • Shadow

Floor Tile Options

  • Sea Grass Luxury Vinyl Tile (Standard)

Interior Add-On Options

    • Stacked Washer and Dryer Bedroom Egress Door Central Vacuum System

Driver's Compartment

    • Adjustable Driver and Passenger Seats
    • Adjustable Tilt and Telescoping Steering Column
    • Leather Wrapped Steering Wheel
    • Backlit Instrument Cluster
    • Generator Start/Stop Rocker Switch
    • Woodgrain Driver and Center Instrument Panel with Back-Lit Switches
    • USB Dash Receptacles
    • Cupholders on Driver and Passenger Side
    • Forward Roof-Mounted Console with Upper Storage Compartments
    • Driver and Passenger Map Lights
    • Single-motor Intermittent Windshield Wipers
    • Automatic LED Headlights
    • Trailer Marker Light Switch Integrated with Headlight Switch
    • AM/FM Stereo with Bluetooth, Dual USB Ports, Navigation, Apple Carplay/Android Auto
    • Colored Multi-Function Touch Screen Stereo with Rear Camera View Activated by Reverse and Side Camera View Activated by Turn Signal
    • Side-view Cameras
    • Color Back-up Camera with Monitor
    • In-dash Navigation System
    • Front Overhead Bunk with Privacy Curtains 1
    • Auxiliary Start Switch
    • Pull-cord for Air Horn
    • Powered Windows
    • Powered Door Locks
    • Privacy Curtain

Driver's Compartment Add-On Options

  • Overhead Bunk TV (Optional) (38 CB Only)

Dinette and Living Area

Drivers Side Dinette Options

  • Ultraleather Booth Dinette-Sleeper (38 AB Only)
  • Dinette Bar (Optional) (38 AB Only)
  • Dinette Computer Workstation (Optional) (38 AB Only)
  • Ultraleather Booth Dinette-Sleeper with Lift TV (38 BB, 38 CB Only)
  • Dinette Bar with Lift TV (Optional) (38 BB, 38 CB Only)
  • Dinette Computer Workstation with Lift TV (Optional) (38 BB, 38 CB Only)
  • Overhead Cabinets (38 AB Only)

Driver Side Furniture Options

  • Ultraleather DE Sofa Bed (38 AB Only)
    Theater Seating (Optional) (38 AB Only)
  • Bunk Beds (28" x 70") (38 CB Only)

Passenger Side Furniture Options

  • Ultraleather Air Coil Sofa Bed with Lift TV (38 AB Only)
  • Ultraleather Air Coil Sofa Bed (38 BB, 38 CB Only)
  • Theater Seating (Optional) (38 BB, 38 CB Only)


  • Stainless Steel Residential Refrigerator
  • Stainless Steel Convection Microwave with Exterior Venting
  • Double Bowl Kitchen Sink with Single Lever Faucet and Pull-down Sprayer
  • Galley Overhead Cabinets
  • Panoramic Galley Window
  • Expand-An-Island (N/A 38 CB)
  • Flip and Fold Countertop Extension (38 CB Only)
  • Full Tile Backsplash
  • Solid Surface Galley Countertop, Sink, and Cooktop Cover

Kitchen Add-On Options

  • Drawer-style Dishwasher (Optional)

Liquid Propane Coach Features (standard with LP coach option)

  • Three-Burner Liquid Propane Cooktop (DEP)

All-Electric Coach Option Features

  • Two-Burner Induction Cooktop (DEP)


  • Overhead Cabinets with Headboard (N/A 38 CB)
  • Overhead Cabinets (38 CB Only)
  • Under Bed Storage (N/A 38 AB)
  • Bedside Windows
  • Bed Comforter with Throw Pillows
  • Strategically Placed, Handcrafted Privacy Door
  • LED Reading Lights
  • Nightstand with Solid Surface Tops
  • Mounted Flat-panel TV
  • Centralized Entertainment Center 29
  • Ceiling Fan
  • Floor-to-ceiling Closet Space (38 CB Only)
  • Wardrobe with Drawers Underneath (N/A 38 CB)

Mattress Options

  • Memory Foam King Mattress (72" x 80")
  • Memory Foam Queen Mattress (60" x 80") (Optional)

Available with No Bedroom Egress Door Features

  • Window at Head of Bed (DEP) (38 CB) (No available with optional bedroom egress door)
  • Bedroom Egress Door Option Features
  • Mounted Headboard (DEP) (38 CB) (Standard with optional bedroom egress door)


  • (1) Bathroom (N/A 38 BB)
  • (1) Bathroom and (1) Half-bath (38 BB Only)
  • (1) Porcelain Master Bathroom Sink
  • Solid Surface Lavatory Top
  • One-Piece Molded Fiberglass Shower
  • Shower Skylight
  • Shower LED Light with Sliding Cover
  • (1) Gravity Flush Toilet (N/A 38 BB)
  • (1) Electric Gravity Flush Toilet and (1) Macerator Toilet (38 BB Only)
  • Towel and Toilet Paper Holders
  • Mirrored Medicine Cabinet
  • Roof Vent Fan
  • Base Cabinet

See us for a complete list of features and available options!

All standard features and specifications are subject to change.

All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.

Due to the current environment, our features and options are subject to change due to material availability.


Tiffin Motorhomes Logo

Tiffin Motorhomes is proud to be one of the few family-owned manufacturers in the industry, and it makes a significant difference in how our company operates versus our competitors. For starters, with the Tiffin name on every coach, building a superior motorhome isn’t just our occupation. It’s a matter of personal pride, a pursuit we have committed our lives to perfecting.