Authorized Dealer
Kalyn Siebert
Precision-engineered heavy haul from Gatesville, Texas
Kalyn Siebert builds premium heavy haul trailers in Gatesville, Texas. Their Diamondback hydraulic RGN series and modular heavy haul platforms are trusted by the largest heavy haul carriers in the country. From lightweight 50-ton units to 90-ton multi-axle combinations, Kalyn Siebert delivers when the load demands the best.
Kalyn Siebert Models
Representative lineup. Call for configuration options and current availability.
Diamondback HRG
Premium hydraulic removable gooseneck lowboy. Multiple axle and capacity configurations from 50 to 90 tons.
HSA Sliding Axle
Hydraulic sliding axle trailer. Available in California-legal and standard configurations for maximum versatility.
RGN Mechanical
Mechanical removable gooseneck in standard, extendable, and paver configurations. Proven simple design.
HHL Heavy Haul
Modular multi-piece heavy haul platform system. Configurable for the heaviest and most oversized loads in the industry.
SDK Step Deck
Fixed, extendable, low-profile, and Versadeck step deck configurations for flatbed and overdimensional freight.
LBO / SNO Oilfield
Fixed neck and scissors neck oilfield lowboys. Purpose-built for oilfield equipment transport.
Ready to talk Kalyn Siebert?
Unit off the yard or custom factory order — we can help either way.