Shock Absorber is a mechanical or hydraulic device designed to absorb and damp shock impulses. It does this by converting the kinetic energy of the shock into another form of energy (typically heat) which is then dissipated. Most shock absorbers are a form of dashpot (a damper which resists motion via viscous friction).

TRE4x4 Nitrogen shock absorber is designed for superior performance across all terrain, the improvements vehicle’s performance of load carrying capacity and control characteristics will provide every off-roader great experience in every adventure.

TRE4x4 Nitrocharger shock absorber series utilizes significant advancements in key components and the latest valve technology to greatly improve ride, comfort and handling on all terrains.

The vehicle-specific valve ensures that the correct valve matches your spring selection, accessories and load requirements, which means that no matter what terrain or intended vehicle usage, there is a Nitrocharger shock absorber to meet Your needs.

Inside the gas-charged shock, a low-pressure charge of nitrogen gas is added in the chamber above the hydraulic oil, helping to reduce fade, minimize vibrations, extend service life and, most importantly, minimize aeration of hydraulic fluid.

Nitrocharger shock absorbers provide the most cohesive, balanced and fine-tuned valve system on the market. TRE also developed the 9", 10", 12", 14" and 16"coil over shock.


The hydraulic suspension system uses four independent dampers with hydraulic fluid. One of the biggest advantages of a hydraulic suspension for your vehicle is that it can produce a firmer ride. Hydraulics are also very responsive and can react quicker than most other suspension systems.

With test of high and low temperatures. TRE4X4 conduct high-quality analysis and pay more attention to the roughness of the shock absorber.


TRE steering stabilizer helps take the load off your steering components and keep your tires tracking straight and true. Oversized off-road tires have a tendency to seek out traction in any direction.


The TRE nitrogen bump stop providing a wide range of bottoming control. The durable construction and replaceable Delrin® strike pad are built to take the abuse while providing predictable and quiet operation. TRE bump stop available at 2”, 3” and 4” model.


TRE offering wide range of international coil springs, such as raised height and heavy duty 4wd springs, with highest quality replacement coil springs insure your off road trip safe and enjoyable.


TRE Control Arm tend to prevent the car from shaking (or more precisely, not to lean to one side or the other). This is what the swing bar does: to prevent the body from tilting


TRE Extended Shackle is made of 6082 T6 alloy to providing correct wheel positioning and larger operating clearances and further increase the ride height


Panhard rod allows excessive sideways movement between the axle and the body at the ends of the spring travel. Unless desirable on smaller cars than larger ones.


TRE brake hoses are high-quality reinforced hoses that carry fluid to transmit force in hydraulic brake systems. Double crimp joints to provide longer service life and durability.