High pressure monotube gas shock absorber completely Made in Italy, customizable in every part, from length to setting.
Once the purchase has been made with advance payment, just write an email to info@hm4x4.com to indicate the measurements and characteristics of the desired calibration. If you have any doubts you can also contact us by telephone.
Since these are made-to-measure items, the times for making them will be communicated to you after completing the purchase.
The high pressure gas monotube shock absorbers have the following characteristics:
- head in C45 steel machined from solid;
- pin on the stem and on the body with hexagonal head to facilitate assembly
- professional grade silicone valve;
- T.I.G. welding where necessary for maximum resistance and refined aesthetics;
- internally ground mechanical steel tube, with an external diameter of 52mm and a thickness of 3mm to resist shocks and guarantee the absence of twisting;
- electrolytic zinc plating with iridescent white finish and subsequent trivalent chromium-based passivation with surface hardness 80 HV;
- steel rod diam.20mm coated in CrVI free hard chrome with tolerance according to EN ISO 286-2
- polyurethane bushings highly resistant to deformation and wear, they are molded with 80 shore thermoplastic polyurethane specific for automotive use, resistant to grease, oil and fuel;
- sintered internal components for maximum wear-free calibration control;
- sealing band in graphited Teflon to improve the smoothness of the suspension;
- double limit switch in polyurethane and steel to stop the extension stroke in a controlled way and not weigh on the bindings;
- ROTHEN Fork oil with very high viscosity index (Viscosity DIN 51562 40°C:13) specifically designed for off-road use which guarantees regular calibration up to 200°C which is essential for intense use such as races or raids in the desert;
- double adjustment of the rebound and compression calibration (double effect shock absorber), both at high and low speeds with translation reed valves;
- linear piston with reed valve and adjustable double bypass for maximum comfort at low speeds;
- high pressure pressurization with inert gas;
- calibration on test bench at 10 speeds, from 5 to 500 m/s to have the perfect calibration in all conditions.
The HM4X4 shock absorbers can be re-calibrated and revised in each of their components, the revision of the HM4X4 shock absorbers is guaranteed at a cost of 50 euros each for the entire life of the shock absorber.
In the first year after the purchase, the recalibration, upon request, is carried out free of charge in order to adapt the shock absorbers to the use you make of the vehicle.
