Landing Gear

Drop Legs

Drop Leg Product Line

Drop leg landing gear products are perfect for a variety of commercial trucking applications looking to save operator time and overhead costs. Here’s a look at the complete line of JOST’s landing gear drop leg products:

AD500 Series

K400 Series

AX100 Series

A400 Series

AX103 Series

AD500 Drop Legs

The only JOST landing gear product without a gearbox, the AD500 Series Landing Gear is a drop leg product with a 25″ drop length. Perfect for smaller loads and for fleets and drivers looking for a fast, efficient way to speed up coupling and uncoupling, the AD500 Series landing gear product is lightweight, economical, and exceptionally quick.

  • No Gearbox Needed
  • 25″ Drop Length
  • Height Adjustable Every 1″
  • 8 bolt mounting flange reinforced to add mounting rigidity
  • Double reinforcing strap for strength

K400 Drop Legs

JOST’s K400 Series drop legs features all of the design benefits of our standard duty series. Complete with spring assisted drop leg retraction that allows for easy use, and an easy twist handle that offers quick drop leg extension and retraction, the K400 drop legs are perfect for a variety of commercial trucking applications.

  • Down stop prevents over extension.
  • Sealed cover and bushings keep moisture out.
  • Optional 10 bolt mounting pattern for mounting rigidity.

Capacities & Ratings

K400 Series

Single Leg Only

Combined Set

Max Static Load Rating*

12,500 lbs

25,000 lbs

Rated Lift Capacity

10,000 lbs

25,000 lbs

Max Static Load Rating*

Single Speed Leg Only:  12,500 lbs

Combined Set:  25,000 lbs

Rated Lift Capacity**

Single Speed Leg Only:  10,000 lbs

Combined Set:  25,000 lbs

* When properly braced on a trailer.

Gear Ratio

  • 5.3 turns = 1″ Travel

AX100 Drop Legs

JOST International’s lightest series of landing gear, the AX100 series drop legs can offer weight savings of at least 50 lbs per set! Ideal for any commercial trucking application looking to increase payload without sacrificing functionality, the AX100 series drop legs features all the same, trusted JOST components, with a significant weight reduction.

  • Lightweight and corrosion resistant.
  • Spring assisted drop leg retraction
  • Convenient down stop preven over extension.
  • Twist handle allows quick extension and retraction of drop leg.
  • Cover and bushings sealed to keep moisture out.

Capacities & Ratings

AX100 Series

Single Speed Leg Only

Two Speed Leg Only

Combined Set

Max Static Load Rating*

12,500 lbs

12,500 lbs

25,000 lbs

Rated Lift Capacity**

10,000 lbs

12,500 lbs

25,000 lbs

Max Static Load Rating*

Single Speed Leg Only:  12,500 lbs

Tow Speed Leg Only:  12,500 lbs

Combined Set:  25,000 lbs

Rated Lift Capacity**

Single Speed Leg Only:  10,000 lbs

Tow Speed Leg Only:  12,500 lbs

Combined Set:  25,000 lbs

* When properly braced on a trailer.

** Not to exceed 40ft lbs of torque.

Gear Ratio

  • High Gear:  3.5 turns = 1″ Travel
  • Low Gear:  32 turns = 1″ Travel

A400 Drop Legs

The JOST A400 Series Drop Leg landing gear offers all of the benefits and features of our standard A400 series with drop leg functionality. Ideal for lighter applications looking to improve efficiency.

  • Spring assisted drop leg retraction.
  • Down stop prevents over extension.
  • Twist handle allows quick extension and retraction of drop leg.
  • Continues to have all the benefits of our standard A400 series.
  • Cover and bushings sealed to keep moisture out.
  • 10 bolt mounting pattern adds mounting rigidity

Capacities & Ratings

A400 Series

Single Speed Leg Only

Two Speed Leg Only

Combined Set

Max Static Load Rating*

12,500 lbs

12,500 lbs

25,000 lbs

Rated Lift Capacity**

10,000 lbs

12,500 lbs

25,000 lbs

Max Static Load Rating*

Single Speed Leg Only:  12,500 lbs

Tow Speed Leg Only:  12,500 lbs

Combined Set:  25,000 lbs

Rated Lift Capacity**

Single Speed Leg Only:  10,000 lbs

Tow Speed Leg Only:  12,500 lbs

Combined Set:  25,000 lbs

* When properly braced on a trailer.

** Not to exceed 40ft lbs of torque.

Gear Ratio

  • High Gear:  3.5 turns = 1″ Travel
  • Low Gear:  32 turns = 1″ Travel

AX103 Drop Legs

JOST International’s lightest series of landing gear, the AX100 series drop legs can offer weight savings of at least 50 lbs per set! Ideal for any commercial trucking application looking to increase payload without sacrificing functionality, the AX100 series drop legs features all the same, trusted JOST components, with a significant weight reduction.
  • Lightweight and corrosion resistant.
  • Spring assisted drop leg retraction
  • Down stop preven over extension.
  • Twist handle allows quick extension and retraction of drop leg.
  • Cover and bushings sealed to keep moisture out.

Capacities & Ratings

AX103 Series

Single Speed Leg Only

Two Speed Leg Only

Combined Set

Max Static Load Rating*

12,500 lbs

12,500 lbs

25,000 lbs

Rated Lift Capacity**

10,000 lbs

12,500 lbs

25,000 lbs

Max Static Load Rating*

Single Speed Leg Only:  12,500 lbs

Tow Speed Leg Only:  12,500 lbs

Combined Set:  25,000 lbs

Rated Lift Capacity**

Single Speed Leg Only:  10,000 lbs

Tow Speed Leg Only:  12,500 lbs

Combined Set:  25,000 lbs

* When properly braced on a trailer.

** Not to exceed 40ft lbs of torque.

Gear Ratio

  • High Gear:  3.5 turns = 1″ Travel
  • Low Gear:  32 turns = 1″ Travel

Download Our Trailer Products Catalog

A complete guide to the full JOST International product line.

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Warranty Statements

Claims should be filed with JOST or any authorized sales or service outlet within 60 days of product failure.

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JOST International is a world market leader for the commercial trucking industry. As a pioneer of efficient, safe, and innovative systems for trucks and trailers, we proudly supply fifth wheel couplings, trailer landing gear, kingpins, turntables, and more.

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