Rail Refrigeration
Cold Chain on Rails
Temperature-controlled rail transport solutions powered by Thermo King. Protect your perishable cargo across thousands of miles with proven reliability and advanced monitoring.
Rail Refrigeration Lineup
Find the right unit for your operation — explore each model and request a quote.
Coming soon: Bigger impact, slim profile
Advancer S-DRC
The Advancer S-DRC is a slimline transport refrigeration unit built on Thermo King’s proven S-Series engine platform, meeting new CARB ULETRU requirements with improved performance, boosted connectivity, and increased operational efficiency.
Unsurpassed reliability and double-digit fuel savings for rail refrigeration.
Precedent C-600RR
The Precedent C-600RR is a rail-ready refrigeration unit designed for double-digit fuel savings and outstanding temperature control, offering compliance choices without compromising performance.
Unsurpassed reliability and double-digit fuel savings for rail refrigeration.
Precedent S-600RR
The Precedent S-600RR offers CARB Evergreen compliance, outstanding durability, and double-digit fuel savings for rail-ready refrigeration applications.
CARB Evergreen and customizable for deep-frozen capability
S-700RR
The Precedent S-700RR brings deep-frozen capability and CARB Evergreen compliance to the Precedent rail-ready refrigeration platform, delivering double-digit fuel savings.
Maximize your rail cargo capacity with the slim-profile SLXi-DRC.
SLXi-DRC
The SLXi-DRC is a slim-profile refrigerated container unit designed for domestic rail transport, allowing for increased cargo capacity with an additional pallet row.
Built for Performance. Backed by Sonsray Fleet Services.
Every Thermo King unit we sell is backed by the largest service network in North America — engineered to protect your cargo, reduce operating costs, and keep you compliant.
Intermodal Containers
Temperature-controlled container units designed for seamless rail-to-truck intermodal transport.
Railcar Refrigeration
Dedicated railcar refrigeration systems for bulk temperature-sensitive cargo transport.
Remote Monitoring
Real-time temperature monitoring and GPS tracking throughout the rail journey.
Multi-Temperature
Multi-zone temperature control for mixed cargo shipments on a single railcar.
Lower Carbon Footprint
Cost-effective, environmentally friendly transport for long-haul perishables.
Sonsray Service Network
Thermo King reliability backed by Sonsray Fleet Services support.
The Sonsray Fleet Services Advantage
When you partner with Sonsray Fleet Services, you get more than equipment — you get North America's largest Thermo King dealer network.
Thermo King Authorized
Factory-authorized sales, service, parts, and warranty support nationwide.
13+ Locations
Coverage across the Western US with on-site and mobile service teams.
24/7 Emergency Service
Round-the-clock roadside support to keep your cold chain moving.
Genuine TK Parts
Massive in-stock inventory of Thermo King OEM parts ready to ship.
Request a Quote
Tell us what you're looking for and a local Sonsray representative will reach out to you promptly with pricing and availability.
- No obligation — just honest answers from equipment experts.
- Fast response from your nearest Sonsray location.
- Factory pricing, financing options, and trade-in evaluation available.
- We carry new, used, and demo equipment across all brands.
Prefer to Talk?