7k Front Torsion Axle; 7k Tandem Torsion Rear Axles - 8" x 4" Heavy Wall Tubing

Introducing the Duo Lift AST42XL All-Steer Combine Head Hauler Trailer Built for Control. Built for Capacity. Designed for exceptional maneuverability, strength, and load capacity, the Duo Lift AST42XL is the ultimate solution for transporting today’s combine headers with ease and confidence. At its foundation, the AST42XL features a six-wheel all-steer design, delivering unmatched tracking and turning precision in the field and on the road. With a heavy-duty 10" x 4" rectangular tube main frame and 7,000-lb front torsion axle paired with tandem rear torsion axles, it handles up to 18,000 lbs while ensuring a smooth, wobble-free ride. This high-performance hauler is equipped with: Adjustable, pinned header supports for a secure, customized fit E-Z hook-up extension tongue for quick and efficient attachment Extended front steel fenders for protection and durability Two-wheel electric brakes for reliable stopping power Highway-speed white-spoke wheels with 235/80R16 LRE tires for safe, road-ready transport From tight farmyards to open highways, the AST42XL is engineered for precision handling, rugged reliability, and the hauling capacity today’s operators demand. Built to Last. Backed with Confidence. Duo Lift equipment is backed by a  5-Year Limited Warranty —emphasizing our commitment to quality, performance, and reliability. We stand behind our craftsmanship with industry-leading coverage on structural components and manufacturing defects. It's our promise: engineered strength, guaranteed peace of mind. To read our 5-Year Limited Warranty Statement, click  here. Duo Lift AST42XL — trusted by harvesters who move more, faster.

NP1000, Hi-Rise Wagon with Conversion for 1,000 Gallon Rocking front Bolster with 1.25" Dia. Rocker Pin 5th Wheel steering w/ 9/16" x 20" Dia. Circular Discs and 2.50" Dia. King Pin 4" x 2" Tongue with (2) 3/8" x 40" DOT Safety Chains w/ Hook and Latch Rear Hitch with Chain Hooks 4" x 4" Stringers, Conspicuity Tape 108" and 120" Tank Leg Spacing

NP1000, Hi-Rise Wagon with Conversion for 1,000 Gallon Anhydrous Ammonia "Prior" Tank Rocking front Bolster with 1.25" Dia. Rocker Pin 5th Wheel steering w/ 9/16" x 20" Dia. Circular Discs and 2.50" Dia. King Pin 4" x 2" Tongue with (2) 3/8" x 40" DOT Safety Chains w/ Hook and Latch Rear Hitch with Chain Hooks 4" x 4" Stringers, Conspicuity Tape 108" and 120" Tank Leg Spacing

N1450, Hi-Rise Wagon for 1,465 Gallon Anhydrous Ammonia Tank, Includes 783 Hub Upgrade with 16.1 x 11 x 6 - 6 Wheels (Required for 14L x 16.1 Tires) Rocking front Bolster with 1.25" Dia. Rocker Pin 5th Wheel steering w/ 9/16" x 20" Dia. Circular Discs and 2.50" Dia. King Pin 4" x 2" Tongue with (2) 3/8" x 40" DOT Safety Chains w/ Hook and Latch Rear Hitch with Chain Hooks 4" x 4" Stringers, Conspicuity Tape 108" and 120" Tank Leg Spacing

N2200, Hi-Rise Wagon, 120" Non-Adjustable Track Width for (2) 1,000 Gallon Anhydrous Ammonia Tanks Heavy Duty Rocking Front Bolster with Greased 2" Dia. Rocker Pin 5th Wheel Steering w/ 9/16" x 20" Dia. Circular Discs w/ 2" Dia. King Pin 4" x 3" Tongue with (2) 1/2" x 40" DOT Safety Chains w/ Hook and Latch, Conspicuity Tape

NP2200, Hi-Rise Wagon, 120" Non-Adjustable Track Width, With Conversion For (2) 1,000 Gallon "Prior" Anhydrous Ammonia Tanks Heavy Duty Rocking Front Bolster with Greased 2" Dia. Rocker Pin 5th Wheel Steering w/ 9/16" x 20" Dia. Circular Discs w/ 2" Dia. King Pin 4" x 3" Tongue with (2) 1/2" x 40" DOT Safety Chains w/ Hook and Latch, Conspicuity Tape

SN-2200, Hi-Rise Wagon, 120" Non-Adjustable Track Width, for (1,600 Gal. Only) Heavy Duty Rocking Front Bolster with Greased 2" Dia. Rocker Pin 5th Wheel Steering w/ 9/16" x 20" Dia. Circular Discs w/ 2" Dia. King Pin 4" x 3" Tongue with (2) 1/2" x 40" DOT Safety Chains w/ Hook and Latch, Conspicuity Tape

M2100, Super Duty Reach Pole Wagon, Non-Adjustable Track Width @ 80", For (1) 2,000 Gallon "Long" Anhydrous Ammonia Tank Heavy Duty Rocking Front Bolster with Greased 2" Dia. Rocker Pin 5th Wheel steering w/ 9/16" x 20" Diameter Circular Discs w/ 2" Dia. King Pin 4" x 3" Tongue with (2) 1/2" x 40" DOT Safety Chains w/ Hook and Latch, Reach Pole Tube CUSTOM 4" Dia. x 1/4", Wall Structural Tubing, Conspicuity Tape

M2200, Reach Pole Wagon, Non-Adjustable Track Width @ 86", For (2) 1,000 Gallon Anhydrous Ammonia Tanks Heavy Duty Rocking Front Bolster with Greased 2" Dia. Rocker Pin 5th Wheel steering w/ 9/16" x 20" Dia. Circular Discs with 2" Diameter King Pin 4" x 3" Tongue with (2) 1/2" x 40" DOT Safety Chains w/ Hook and Latch, Reach Pole Tube, 4" Dia. x 1/4" Wall Structural Tubing, Conspicuity Tape