How to Determine Correct Replacement Landing Gear

Updated 08/13/2025 | Published 06/15/2022

Products Featured in This Question

Lippert Manual Landing Gear Set w/ Handle - 37" Lift - 6,000 lbs

(8)

$562.26

Stromberg Carlson Electric Landing Gear Set - Weld On - 34-7/8" Lift - 6,500 lbs

(218)

$900.12

Question:

I HAVE A 1997 H/R 5TH WHEEL IT SEAMS THAT I CANT FIND JUST THE GEARS I NEED .. A 15TX15T GEARS, I HAVE BEEN TOLD,LONG GONE !!! SO MY LEGS ON MY TRL HAS A 33.75 IN LONG CASE !! YES SHE HAS LONG LEGES LOL...AND THERE ELEC, AND HAVE WHAT LOOKS LIKE NOW A STROMBURG/CARLSON MOTOR AND GEAR BOX.. SO I THINK I CAN GET A MANUAL SET, AND USE MY MOTOR !! BUT YOUR LEG CASE IS ONLY 29.5 IN.. A CONCERN IS HOW LONG IS THE SHAFY ON THE LEAD LEG ?? I HAVE A 2 IN FRAME BETWEEN LEG AND GEAR BOX !! SO IM KINDA LOST ON WHAT LEG WILL WORK !! HELP !!! ??? AND IN I CAN USE MY MOTOR AND GEAR !! MY LEGS ARE 37.75 IN LONG !! I SEE MOST ARE ONLY 29.5 LONG... SO MINE HAVE 8 IN ADDED ?? WELDED ON !!! SO I NEED A LONGER LEG, ????!!!!???? BUT ONE OF THE ?? IS WILL THE SHAFT BE LONG ENOUGH TO FIT THE SPACE ON FRAME THAT MY OLD SET WAS.. I WILL SEND A PIC OF THAT SO THE FRAME IS THAT SPACE BETWEEN LEG AND BOX !! OTHER ?? 33.75 IN LONG ??? AND THAT ENDS JUST AT BOTTOM OF SKIRTING.. SO ANY THOUGHTS ????? ON SHAFT AND LENGTH ???

asked by: Wayne

Expert Reply:

What I think you are saying is that you need new landing gear for a 1997 5th wheel and the currently installed set is 33-3/4" in length. To determine the correct replacement landing gear for your 5th wheel trailer, you will need to measure the mounting brackets on your trailer from the underside of the top bracket to the top of the lower bracket as shown in the diagram. From there you will be able to choose the amount of lift and weight capacity that will work for you.

For the length you listed, once you discover the weld stop measurement, take a look at the Stromberg Carlson Electric Landing Gear Set, # LG-3.

expert reply by: Michael R

How To Measure landing Gear
(click to enlarge)

Colton

8/13/2025

I ordered a replacement landing leg for my 2009 Forrest River sierra 335QBQ. It was the correct size lev and fits perfectly. It looks exactly like the old one. But I just saw where it may only be rated for 4,000lbs. Is that enough? Do I need a 6,000lb leg? The leg that said 6,000lbs shows that it is wider than the older leg (and new one). Just not sure if I ordered the wrong leg and need a stronger one but also don’t want to order one that won’t fit…

Jameson C.

8/13/2025

@Colton You'll be fine with what you have. I am sure your RV weighs more than 4,000 lbs but the landing gear only carries about 15-20 percent of the total weight of the trailer and even that much is split on either side of the two landing gear.

Colton

8/13/2025

@JamesonC thank you! I was hoping so, but got mixed answers. Really appreciate the reply!