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Trail Master 4.0 Inch Lift Kit with NGS Shocks - TM3640-20013


  • Trail Master | Part Number: T/MTM3640-20013
  • Suspension Type:Leaf Spring
  • Rear Lift Method:Leaf Springs
  • Lift Height Range:3 to 4.99 Inches
  • Shocks Included:Yes
  • Fitment:Direct Fit


Trail Master suspension systems are uniquely designed to allow vehicles to take on the most extreme off-road trails, yet remain quiet and dependable for everyday driving. To do this, we design our systems to limit excessive wear and tear on factory ball-joints, steering components and reduce noise and vibrations. Making sure everything is durable and reliable is why our suspension systems include items such as, high-grade alloy steel- tube control arms, Flex-joint bushing technology, precision laser cut bolt-holes, CNC machined spindles, CNC press-brake formed brackets, and much more. Our suspension systems also come complete with everything required to properly raise your vehicle without having to order or purchase extra components. Find out why more people prefer a quality Trail Master Suspension, than other suspension kits on the market.



i bought this for my CJ7 and was a little worried that it was going to be super stiff due to the fact that i was one of the least expensive kits i could find. installation: Everything went on super smooth extended brake lines are needed. the only problem i had was it came with a drop pit man arm for a power steering box and not the manual as requested. I called 4wd and they shipped me out the right pitman arm that day for free. i even got to keep the other pitman arm. i am running on stock shackles so you may be able to get more from this kit by upgrading the shackles. riding: I rode on it for about 4 weeks with the sway bar and the ride was smother than my 30 year old springs. flex: this past weekend i took the sway bar off and tried her out. well i was pretty impressed the wheels were moving up and down more than I could tell. we hit a few part where i was able to take some sweet pictures. i never got stuck and maintained pretty good traction all the way through.

from Alabama |
I liked the Trailmaster Lift

I installed the 4" lift kit. With the existing sagging springs I actually got 5 inches of lift. At the Redneck Garage I did a complete video series on the install.

from Frankin TN |


Question & Answers

7 Answered questions

Does this kit come with sway bar quick disconnects? Also the description of the product says that it has a lifetime warranty. Is there a catch? Is the warranty really lifetime? Thanks, Bryan

Asked by Bryan BOJO from Monument, CO on

Hi Bryan, This Trail Master 4.0 Inch Lift Kit with NGS Shocks comes with extended versions of the sway bar end links, however they are not the disconnect style. This kit does indeed have a lifetime coverage against defects in parts and workmanship from the manufacturer, thanks for your inquiry.

Answered by Jim G Ext 4806 from Monument, CO on

1979 CJ7. You mention extended brake line recommended. I was told the stock length is ok for a 4in but a must do for a 6in lift. Was I misinformed?

Asked by Pete from Lodi,ca on

Hello Pete, The Trail Master 4.0 Inch Lift Kit with NGS Shocks will need to add extended brake lines. I would recommend using RUS695910. Thanks for the inquiry.

Answered by Adam from Lodi,ca on

Does this lift kit or either Trailmaster 4 inch lift kit come with shock boots? Does this kit require front and rear brake line extensions?

Asked by Jeepy from on

Hi Jeepy, This Trail Master suspension kit does not include shock boots. We do have them available in several different colors. We recommend the extended, braided brake lines, here they are and thank you for your inquiry.

Answered by Jim G Ext 4806 from on

See all questions & answers


Since the late 1980's Trail Master Suspension has been a trusted name in the off-road industry for suspension components that will get the job done at a reasonable price. Trail Master produces off-roading full suspension systems, shock absorbers, leveling kits, steering stabilizers and accessories for a variety of trucks, Jeeps and SUVs. Trail Master designs its products for the hardcore off-roader but at a price point for the weekend-warrior. Each complete suspension system is designed for and tested on each individual vehicle application, as are the leveling kits. To accompany its lift kits and leveling kits Trail Master has its own line of SSV shock absorbers meant for off-road use with extra wheel travel and fade free performance. Shop Trail Master Now

This Product Fits the Following:

  • 1986 Jeep CJ7 Base  
  • 1986 Jeep CJ7 Laredo  
  • 1986 Jeep CJ7 Renegade  
  • 1985 Jeep CJ7 Base  
  • 1985 Jeep CJ7 Laredo  
  • 1985 Jeep CJ7 Renegade  
  • 1984 Jeep CJ7 Base  
  • 1984 Jeep CJ7 Renegade  
  • 1983 Jeep CJ5 Base  
  • 1983 Jeep CJ5 Laredo  
  • 1983 Jeep CJ5 Limited  
  • 1983 Jeep CJ5 Renegade  
  • 1983 Jeep CJ7 Base  
  • 1983 Jeep CJ7 Laredo  
  • 1983 Jeep CJ7 Limited  
  • 1983 Jeep CJ7 Renegade  
  • 1982 Jeep CJ5 Base  
  • 1982 Jeep CJ5 Laredo  
  • 1982 Jeep CJ5 Limited  
  • 1982 Jeep CJ5 Renegade  
  • 1982 Jeep CJ7 Base  
  • 1982 Jeep CJ7 Laredo  
  • 1982 Jeep CJ7 Limited  
  • 1982 Jeep CJ7 Renegade  
  • 1981 Jeep CJ5 Base  
  • 1981 Jeep CJ5 Laredo  
  • 1981 Jeep CJ5 Renegade  
  • 1981 Jeep CJ7 Base  
  • 1981 Jeep CJ7 Laredo  
  • 1981 Jeep CJ7 Renegade  
  • 1980 Jeep CJ5 Base  
  • 1980 Jeep CJ5 Golden Eagle  
  • 1980 Jeep CJ5 Laredo  
  • 1980 Jeep CJ5 Renegade  
  • 1980 Jeep CJ7 Base  
  • 1980 Jeep CJ7 Golden Hawk  
  • 1980 Jeep CJ7 Laredo  
  • 1980 Jeep CJ7 Renegade  
  • 1979 Jeep CJ5 Base  
  • 1979 Jeep CJ5 Golden Eagle  
  • 1979 Jeep CJ5 Renegade  
  • 1979 Jeep CJ7 Base  
  • 1979 Jeep CJ7 Golden Eagle  
  • 1979 Jeep CJ7 Renegade  
  • 1978 Jeep CJ5 Base  
  • 1978 Jeep CJ5 Golden Eagle  
  • 1978 Jeep CJ5 Renegade  
  • 1978 Jeep CJ7 Base  
  • 1978 Jeep CJ7 Golden Eagle  
  • 1978 Jeep CJ7 Renegade  
  • 1977 Jeep CJ5 Base  
  • 1977 Jeep CJ5 Golden Eagle  
  • 1977 Jeep CJ5 Renegade  
  • 1977 Jeep CJ7 Base  
  • 1977 Jeep CJ7 Golden Eagle  
  • 1977 Jeep CJ7 Renegade  
  • 1976 Jeep CJ5 Base  
  • 1976 Jeep CJ5 Renegade  
  • 1976 Jeep CJ7 Base  
  • 1976 Jeep CJ7 Renegade  
  • 1975 Jeep CJ5 Base  
  • 1975 Jeep CJ5 Renegade