XT AUTOMOTIVE SHOCKS, MADE IN ITALY with the highest quality standards, iso9001:2015 certified,THE ADVANTAGES OF XT AUTOMOTIVE SHOCKS:-exclusively Hydraulic, special high quality and high strenght fluid mainteins viscosity in extreme situations-double effect-twin tube design for protection from stone damage-velocity sensitive valving for fine tuning the suspension control-61mm body diameter -38mm piston, this allow an oil quantity increased than other shocks, to not allow over temperatures and fading.-20mm ROD-all around welded steam and increased weld on loop to improve strenght-high strengh rubber bushes-INTERNAL LOCK tested to 5000kg!...this LOCK prevents topping out!-REBUILDABLE!!! It's possibile rebuld it or change setting damper with rebuildingMADE IN ITALY!!!FOR OPEL FRONTERA FROM 99 REAR (FRONTERA B - FOR +4CM AND +6CM LIFT)