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The MR-3840 is a new magnetic coil strut assembly engineered for the front of 2015–2020 GM Short Wheelbase (2WD) SUVs equipped with Z95 MagneRide. This direct replacement restores proper factory ride height and maintains the performance expected from a MagneRide system. For GMs K2 platform, Arnott provides two ride height options: the MR-3840 restores the vehicle to its original height, while the MR-5358 offers an additional 1 inch lift. At the core of this assembly is an OES monotube damper filled with magnetorheological fluid, a synthetic hydrocarbon oil containing iron particles that respond instantly to magnetic fields. When the electromagnetic coil is energized, the magnetized particles alter the effective viscosity of the fluid, adjusting the stiffness of the suspension in real time. This technology delivers precise, adaptive control for a balanced ride. The strut arrives fully pre-assembled with a powder-coated coil spring, upper strut mount, bump stop, spring seat, and isolator for true plug-and-play installation. Designed and assembled in the USA, it fits either front position and comes with a detailed installation manual. Arnott recommends replacing in pairs for the best results.
This part fits the following vehicles.
| Active Or Passive Suspension | Active |
|---|---|
| Adjustable | No |
| Adjustable Compression | No |
| Adjustable Damping | No |
| Adjustable Rebound | No |
| Adjustable Ride Height | No |
| Air Adjustable | No |
| Air Bladder | No |
| Air Bladder Material | No |
| Air Ride Suspension | No |
| Bearing Plate Included | Yes |
| Bladder Heavy Duty Crimping Rings Included | No |
| Bladder Sleeve(s) Included | No |
| Bladder(s) Included | No |
| Body Diameter | 50.0 mm |
| Body End Measuring Point | Center Eye |
| Boot Color | Black |
| Boot Included | Yes |
| Coil Over Springs Included | Yes |
| Coil Spring Included | Yes |
| Compressed Length | 312.9 mm |
| Country Of Origin | USA |
| Dust Shield Included | Yes |
| Dust Shield Material | Rubber |
| Extended Length | 452.1 mm |
| Gas Charged | Yes |
| Grade Type | Standard Replacement |
| Heavy Duty Crimping Rings | No |
| Housing Material | Steel |
| Internal Construction Type | Twin Tube |
| Internal Damper Type | Magnetic |
| Lower Mount Type | Cross Pin |
| Lower Mounting Isolator Included | Yes |
| Mounting Hardware Included | Yes |
| New Or Remanufactured | New |
| Outer Housing Diameter | 50.0 mm |
| Progressive Spring Rate | No |
| Protective Aluminum Can | No |
| Shock Absorber Rod End Measuring Point | Shoulder of Stud |
| Shock Spring Assisted | Yes |
| Shock/Strut Color | Black |
| Spring Isolators Included | Yes |
| Spring Rate Type | Linear |
| Spring Seat Included | Yes |
| Springs Included | Yes |
| Street Legal | Yes |
| Travel Length | 139.2 mm |
| Upper Mount Type | Bolt |
| Upper Mounting Isolator Included | Yes |
24 Months
This part is vehicle specific - for a guaranteed fit please close this window and select your ride. Click confirm to add to your cart anyway.
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