What Kalyn Siebert does

Kalyn Siebert is a U.S.-based manufacturer of custom-engineered heavy-duty and specialty trailers, operating from a 200,000 sq ft facility on 31 acres in Gatesville, Texas. Founded in 1961 and now a subsidiary of Engineered Transportation International (EnTrans), itself owned by Canada's TerraVest Industries, the company designs and builds trailers spanning 25–250 ton capacities — including lowboys, sliding axles, removable gooseneck units, heavy-haul configurations, chip vans, ISO chassis, tactical/military trailers, and pressure pumping equipment. Proprietary product lines (VersaMAXX, MiniDECK, Diamondback, SlideMAXX, Altralite) are validated on a proprietary off-road test track, manufactured to ISO 9001/14001/18001/22000 standards, and backed by industry-leading warranty terms (5-year prorated frame, 3-year prorated paint).

The company's revenue model combines custom hardware sales (the dominant stream) with parts, service/refurbishment (20,000+ sq ft service facility), and a managed/financed component via Northland Capital. Distribution runs through a North American dealer network (including Purpose Wrecker, Kenworth of Louisiana, Midco Sales) supplemented by direct enterprise sales and an international export channel via DEGA. Pricing is quote-based and not publicly disclosed. The customer base is anchored in oil & gas servicing (4,000+ chassis delivered since 2007 to 6 world-leading service companies) and military/defense (MTTRS program, CAGE CODE 63576), with secondary verticals in construction, towing/recovery, agriculture, forestry, and — newly from late 2025 — aerospace and data center equipment transport.

Name

Kalyn Siebert

Legal name

Kalyn Siebert

Website

https://kalynsiebert.com

Company type

Private

Founded year

1961

Operating status

Operating

Headcount range

101–250 employees

Short description

Kalyn Siebert is a U.S. manufacturer of custom-engineered heavy-duty trailers (25–250 tons) serving oil & gas, military/defense, construction, towing/recovery, and emerging aerospace and data center verticals, operating from a 200,000 sq ft facility in Gatesville, Texas, as a subsidiary of EnTrans/TerraVest.

Ownership category

akta.pro rank

Product category

Heavy-Duty Trailer Manufacturing

NAICS

Truck Trailer Manufacturing (336212), Transportation Equipment Manufacturing (336), Motor Vehicle Parts Manufacturing (3363), Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing (333924)

SIC

Truck Trailers (3715), Miscellaneous Transportation Equipment (3790), Wholesale-Motor Vehicle Supplies & New Parts (5013)

akta.pro primary industry

Specialized Trailer & Heavy Transport Equipment Providers (SPMT, Lowboy, Multi-Axle) (TLADAGAM)

akta.pro secondary industries

Semi-Trailer Manufacturing (Dry Van/Reefer/Tanker/Lowboy) (IMACAGAB), Trailer Manufacturing (Utility/Enclosed/Flatbed/Car Hauler) (IMACAGAA), Heavy-duty truck, trailer & commercial vehicle parts distribution (CRAOANAJ)

Keywords

• Heavy-duty trailers
• Custom trailer manufacturing
• Military tactical trailers
• Oilfield equipment chassis
• Heavy haul transportation

Headquarters

HQ city

Gatesville

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Trailer Manufacturing and Sales: Primary revenue stream from manufacturing and selling custom heavy-duty trailers including lowboys, sliding axle, removable gooseneck, heavy haul, and specialty trailers. Products range from 25-250 ton capacity.
2. Parts Sales: Parts department offering replacement components and accessories for all Kalyn Siebert trailer models.
3. Service and Maintenance: Full service department providing maintenance, repair, and refurbishment services. Company operates a 20,000+ sqft refurbishment and service space.
4. Pressure Pumping Systems Integration: 20,000 sq ft facility strategically positioned to integrate and refurbish oil and gas equipment including pressure pumping systems.
5. Trailer Financing: Financing partnerships with Northland Capital providing financing solutions for customers purchasing trailers.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Kalyn Siebert designs, engineers, and manufactures premium custom-engineered heavy-duty trailers and specialty transportation equipment, with capacities ranging from 25 to 250 tons. The company serves the oil and gas, military/defense, construction, towing and recovery, agriculture, forestry, and heavy-haul transportation markets from its 200,000 sq ft manufacturing facility in Gatesville, Texas.

Product overview

Kalyn Siebert is a manufacturer of premium, custom-engineered heavy-duty trailers and specialty equipment serving the military/defense, energy (oil & gas), construction, agriculture, forestry, and transportation markets. The product portfolio centers on specialized trailers ranging from 25–250 ton capacity and includes VersaMAXX™ (50T/60T bus and vehicle transport/recovery), VersaMAXX EXT™ (extendable versions), MiniDECK Detachable Gooseneck Lowboy (lightweight 3-beam design), Diamondback Series (oil & gas), Sliding Axle/Siebert Phoenix/SlideMAXX™ (40–55 ton towing & recovery), VersaDECK (40T step-deck for oilfield), Fixed Neck Low Boy Oilfield, Removable Gooseneck Trailers (mechanical/hydraulic), Scissors Neck Oilfield, Platform Deck, Step Deck, Heavy Haul (including 6-axle and industry-first 8-axle steer dollies), Altralite Steel End Dump, Lightweight 50T (construction), AG Chip Van (agriculture double drop), Chip Van (forestry/open top, closed top, live floor), Oilfield Equipment Chassis, Pressure Pumping Systems, O&G Integration services, Tactical Trailers, Vans, ISO Systems and Extendable ISO Chassis (aerospace/data center), Data Center Trailer, KS Fueling Systems, and RESET/RECAP refurbishment services. Products are engineered and manufactured in Gatesville, Texas with ISO 9001, ISO 14001, and ISO 18001 certification, backed by a 5-year frame warranty, 3-year paint warranty, and 1-year comprehensive warranty.

Differentiator

Problem solved

Functional benefit

Products and services

• VersaMAXX™ Low-profile bus and large vehicle transport and recovery trailer with 100,000 lb capacity, adjustable hydraulic removable gooseneck (HRG), and two 20,000 lb wireless winches for single-operator loading. Available in 50T and 60T models with lengths from 53' to 58'. California-legal extendable versions available.
• VersaMAXX EXT™ Extended-length version of the VersaMAXX for towing and recovery operations. California-legal version expands from 48' to 53'; extended model expands from 53' to 58'. Designed for hauling construction equipment, buses, RVs, fire trucks, boats, and trash trucks.
• MiniDECK Detachable Gooseneck Lowboy Lightweight yet exceptionally strong detachable gooseneck lowboy with three-beam center box beam design. Features 12" loaded deck height with 4" ground clearance. Maximizes payload and delivers optimum versatility for crane, rigging, breakbulk, towing, recovery, and energy industries.
• Diamondback Series Specialty trailer series for oil and gas applications, part of Kalyn Siebert's diverse line of heavy-duty trailers serving the energy sector.
• Fully Galvanized Sliding Axle Trailer Top-to-bottom corrosion-resistant sliding axle trailer available in 48', 50', and 53' lengths. Features 7-degree approach angle for low-clearance maneuvering and a 20,000-pound neck-mounted winch. Designed for towing and recovery in harsh road and sea salt environments.
• Siebert Phoenix Sliding Axle Specialized sliding axle trailer for the towing and recovery industry, featuring robust design and corrosion protection.
• SlideMAXX™ Slide axle product line for the towing and recovery industry.
• VersaDECK 40-ton, 2-axle, 48' step-deck trailer designed for hauling sandbox equipment around oilfield locations. Configurable for general freight, cargo, oilfield pipe, and other applications.
• Fixed Neck Low Boy Oilfield (LBO) Fixed-neck lowboy trailer designed for oilfield equipment transport.
• Removable Gooseneck Trailers Hydraulic removable gooseneck trailers for heavy equipment transport. Lower deck heights reduce center of gravity for easier loading and unloading. Available in mechanical or hydraulic configurations.
• Scissors Neck Oilfield (SNO) Scissors-style neck oilfield trailer for specialized heavy equipment transport in the energy sector.
• Heavy Haul Trailers Specialized heavy-haul trailers designed for complicated industry rules and requirements, including state-specific configurations for oversized and specialized loads. Over 50 years of experience in heavy-haul transport.
• Platform Deck Platform deck trailers for heavy equipment and machinery transport across various industries.
• Step Deck Step-deck trailers for equipment transport with lower deck sections for taller loads.
• Oilfield Equipment Chassis Specialized chassis trailers designed for oilfield equipment transport, with over 4,000 oil and gas chassis trailers produced for 6 world-leading oil and gas servicing companies since 2007.
• O&G Integration Integration and customization services for oil and gas equipment, utilizing Kalyn Siebert's Pressure Pumping System's 20,000 sq ft facility for equipment integration and refurbishment.
• Pressure Pumping Systems Pressure pumping system trailers and equipment integration solutions for the oil and gas industry.
• Lightweight 50T Lightweight 50-ton capacity trailer for construction equipment transport, engineered for maximum strength at low tare weights.
• Altralite Steel End Dump Lightweight steel end dump trailer launched in 2013 for aggregate and material transport applications.
• AG Chip Van Agricultural chip van trailer for hauling combines, tractors, and implements. Available with mechanical or hydraulic removable goosenecks. Double drop and double drop extendable configurations available.
• Chip Van Trailers Forestry chip van trailers including 45' Open Top, 42' Closed Top In-Woods with top-hinge doors for tipper unloading, and 45' Open Top with Hallco live floor. Available in 96" and 102" widths.
• Tactical Trailers Specialty trailers for military defense applications, part of Kalyn Siebert's defense sector product line.
• Vans Military-style van trailers for defense sector applications.
• ISO Systems ISO container chassis and systems for intermodal transport, including extendable configurations for aerospace and data center applications.
• Extendable ISO Chassis Extendable ISO chassis for transporting ISO containers and oversized loads in aerospace, data center, and intermodal applications.
• Data Center Trailer Specialized trailers designed for data center equipment transport, expanding Kalyn Siebert's portfolio into the data center infrastructure sector.
• KS Fueling Systems Fueling system trailers and equipment for field operations in defense, construction, oil and gas, and other specialized sectors.
• RESET/RECAP Projects Trailer refurbishment and recapitalization services, part of Kalyn Siebert's full-service refurbishment garage with over 20,000 sq ft of service space.
• 6 Axle Steer Dolly Industry-leading 6 axle steer dolly developed in 2010 for heavy-haul and specialized transport applications.
• Heavy Haul 8 Axle Steer Dolly Industry-first heavy haul 8 axle steer dolly introduced in 2015, setting a standard in the heavy-haul trailer market.

Quantifiable outcome

• 5-year prorated warranty on frame, 3-year prorated warranty on paint, 1-year on remainder of trailer
• +2 more outcomes

Named customers6 records

Segments7 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Five partnerships are on record, tiered core and flagship.

• Purpose WreckercoreChannel Partner/ Reseller/ Distributor · 12 December 2019Partnership with Purpose Wrecker, a provider of top-quality tow trucks, carriers and heavy-duty wreckers for the towing and recovery industry. Founded in 1981, headquartered in Wentzville, Missouri with 200-unit inventory on 10 acres. Plans to sell 100 Kalyn Siebert trailers per year. The VersaMAXX trailer is their number-one-selling trailer.
• Kenworth of LouisianacoreChannel Partner/ Reseller/ Distributor · 21 October 2019Partnership with Kenworth of Louisiana, a full-line trailer dealer serving oilfield, heavy-haul and construction markets. Family-owned operation for over 50 years, headquartered in Gray, Louisiana. Team of 330+ employees across eight locations serving all major metropolitan areas of Louisiana.
• Midco SalescoreChannel Partner/ Reseller/ Distributor · 17 September 2019Partnership with Midco Sales, a full-service trailer dealer for over-the-road, aggregate, construction, equipment and light/medium-duty transport markets. Founded in 2012, headquartered in Chandler, Arizona serving Phoenix metro and Southwestern U.S. Has 20,000+ sq ft service bays and retail parts store.
• DEGAcoreChannel Partner/ Reseller/ Distributor · 1 January 1995Established export sales partnership with DEGA in 1995 for international distribution of Kalyn Siebert products outside North America.
• Engineered Transportation International (EnTrans)flagshipOthersKalyn Siebert is a subsidiary of Engineered Transportation International (EnTrans), a leading manufacturer of tank trailers, oilfield capital equipment, and related components. EnTrans is owned by TerraVest Industries, Inc., a leading North American manufacturer of transportation and industrial energy equipment.

Scale indicators5 records

Recent moves7 records

Expansion highlights4 records

Direct peers

• Fontaine Modification: Manufacturer of heavy-haul lowboy trailers, drop decks, and trailer modifications for commercial and government customers. Directly comparable engineering and customer base in heavy-haul and government/defense adjacent to Kalyn Siebert's MTTRS-style programs.
• Landoll Corporation: Manufacturer of specialized trailers including heavy-haul lowboys, hydraulic sliding axles, and detachable goosenecks. Comparable product engineering approach and overlap with Kalyn Siebert in towing/recovery, military, and heavy-haul segments.
• Talbert Manufacturing: Manufacturer of heavy-haul specialized trailers (lowboys, drop decks, hydraulic detachables) for construction, heavy equipment, and wind energy. Most direct functional comparable to Kalyn Siebert; notably, Kalyn Siebert's incoming President Troy Geisler joined from Talbert in 2025, underscoring the operational similarity.
• Trail King Industries: Manufacturer of heavy-haul, construction, agriculture, and specialized trailers including lowboys and detachables. Competes head-to-head with Kalyn Siebert in the heavy-haul segment across North America with similar product breadth and customer verticals.
• XL Specialized Trailers: Manufacturer of heavy-duty and specialized trailers including lowboys, hydraulic detachables, and sliding axles. Direct competitor in the heavy-haul and equipment transport niche that Kalyn Siebert serves with its lowboy and removable gooseneck lines.
• Witzco Trailers: Specializes in heavy-haul lowboy trailers and detachables for oversized equipment transport. Closely comparable niche manufacturer serving construction, oilfield, and heavy-haul customers similar to Kalyn Siebert's core end markets.
• Pitts Trailers: Manufacturer of lowboy and heavy-haul trailers serving construction, oilfield, and equipment transport customers. Direct competitor in the lowboy/equipment transport niche with comparable product line breadth to Kalyn Siebert.
• Doonan Specialized Trailer: Specialty manufacturer of heavy-haul and specialized trailers for construction, oilfield, and agricultural equipment transport. Similar customer profile to Kalyn Siebert with comparable product focus on drop-deck and specialized lowboys.
• Load King (Custom Equipment Holdings): Manufacturer of specialized heavy-haul trailers including custom engineered and lowboy models. Part of the Custom Equipment family alongside Trail-Eze and Rogers; competes with Kalyn Siebert in heavy-haul, construction, and oilfield transport.

Broad incumbents

• Heil Trailer International: Sister company under Engineered Transportation International (EnTrans) and the historical acquirer of Kalyn Siebert in 2000. While Kalyn Siebert focuses on heavy-haul/oilfield/defense trailers and Heil on tank trailers and refuse bodies, both share the EnTrans parent and adjacent commercial trucking customers.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

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Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Kalyn Siebert