Legendary Adventure

The all-new Allegro Bay packs luxury amenities, diesel power and a spirit for adventure into a rugged Super-C class coach. Freightliner Custom Chassis’ revolutionary S2RV chassis, the first front-engine diesel chassis designed and built exclusively for the RV market, makes the perfect foundation for a spacious, well-appointed interior. If youre ready for adventure, theres an adventure-ready coach waiting for you the Allegro Bay.

Freightliner Custom Chassis Corporation
Born to Build: The RV Experience You've Been Waiting For; S2RV

Red Bay, Alabama and Gaffney, South Carolina may be hundreds of miles apart, but they are bound by a rich southern heritage, a strong work ethic and legacies of excellence. Red Bay is the home of Tiffin Motorhomes. Gaffney is the home of Freightliner Custom Chassis. For years, these proud names have built a following of loyal fans who demand more from their RV experience.

Now, these two legends have joined forces to build a distinctly superior RV experience. Built on Freightliners exclusive S2RV chassis, the all-new Allegro Bay blends generous luxury with rugged durability and performance.

Allegro Bay Features

longer line of sight and reduced blind spot on S2RV

The S2RVs large windshield and ergonomic dash design maximize driver line of sight and reduce blind spots. A premium noise abatement and insulation package keeps road noise at a minimum.

Cummins B6.7 engine

Cummins B6.7 delivers quiet, clean power and 800 lbs/ft torque at 1800 RPM, giving the Allegro Bay impressive towing capacity and high performance on even the steepest grades.

Full-time traction control with no-spin differential

The Allegro Bay S2RV features TracTech – full-time traction control with no-spin differential, eliminating wheel-spin in wet, snowy and muddy conditions.

The ingenious, no-maintenance AirLiner air ride suspension works in concert with custom-tuned Sachs shocks to tame rough roads for complete comfort, mile after mile.

All tanks are equipped with automatic drain valves with heaters to eliminate the need to manually pull drain cords, and prevent drain water from freezing.

A convenient manual dump valve for the rear suspension provides the freedom to dump all, some, or none of the air, for complete control when hitching or unhitching a trailer.

LED headlights generate a wider, longer beam path for maximum nighttime visibility. They are also virtually maintenance-free and last up to 50x longer than traditional halogen bulbs.

Oasis Service Network


Freightliners chassis is backed by more than 450 Freightliner-branded service locations, including Oasis Network dealers specifically designed to service RVs. The 24/7 Direct mobile app provides factory-direct concierge service, connecting RV owners with experienced factory service advisors, maintenance information and more for the life of the RV.

Get the app for your Apple or Android device.

Google Play
App Store