Rough Country's M1R Rear Adjustable Reservoir Loaded Struts give your 2021-2026 Bronco a suspension upgrade built for both trail performance and daily driving comfort. The monotube design with an external reservoir keeps fluid temperatures in check during sustained off-road use, while digressive valving reacts instantly to changing surface conditions. Ride height adjustability lets you dial in lift without swapping struts, and the entire kit bolts in with basic tools in roughly 2-3 hours.
Monotube reservoir construction that runs cool. The 46mm monotube body houses an internal floating piston that separates oil from nitrogen gas, eliminating aeration and fade. The external reservoir adds fluid volume and dissipates heat faster than a twin-tube design, keeping damping consistent whether you're crawling rock gardens or running washboard at speed.
Digressive valving for the full range of conditions. Self-adjusting, deflective-disc independent rebound and compression circuits respond to surface inputs without manual intervention. The 2-inch digressive piston delivers a controlled, planted feel over rough terrain and a compliant ride on pavement, so you are not choosing between comfort and capability.
Built to take punishment. The strut body uses 2-inch seamless extruded tubing and a 16mm centerless-ground, case-hardened, chromed, and super-polished rod. Durable vulcanized natural rubber bushings absorb noise and vibration, and a powder-coated silver finish protects against corrosion. Multiple spring perch grooves allow ride height adjustment across available lift heights.
Product Benefits
- External Reservoir: Adds fluid volume and dissipates heat faster for fade-free performance.
- Digressive Valving: Instantly adapts rebound and compression to changing terrain.
- Ride Height Adjustable: Multiple spring perch grooves allow lift customization without swapping struts.
- 46mm Monotube Design: Consistent damping in all conditions with no aeration.
- 16mm Polished Rod: Centerless-ground, case-hardened, and chromed for long-term durability.
- 2-Inch Seamless Extruded Tube: Heavy-duty construction handles the demands of off-road use.
- Vulcanized Rubber Bushings: Absorb vibration and reduce noise transfer into the cabin.
- Powder-Coated Silver Finish: Resists corrosion from trail exposure and harsh elements.
- Bolt-On Installation: Installs with basic hand tools in approximately 2-3 hours.
- 3-Year Manufacturer Warranty: Covers structural and workmanship defects from the date of purchase.
Note: Fits 2021-2026 4WD Bronco (2-Door and 4-Door). Available in configurations for 2-inch, 3.5-inch, and 5-inch lift heights.
About Rough Country: Rough Country designs and manufactures lift kits, suspension components, and off-road accessories for trucks and SUVs. The brand focuses on delivering capable, tested solutions at accessible price points, with fitment-specific engineering across a wide range of popular platforms.
WARNING: California Residents: Cancer and Reproductive Harm;
www.p65warnings.ca.gov
Product Specifications & Vehicle Fitment
Review the product details and confirm compatibility with your vehicle before ordering.
| Specification | Details |
|---|---|
| Vehicle Fitment | 2021, 2022, 2023, 2024, 2025, 2026 |
