Rock Solid 4x4 shop

4x4 Suspension & Drivetrain Specialists

Serving Denver Area 4x4 & Off Road Market

Custom Truck and 4x4 Shop




Financing Available


Rock Solid 4x4 Shop Home

Carli Suspension Rough Country lift kits Fabtech Kelderman Air Warn Jeep ARB Lockers Ox Lockers Yukon gears
Chevy trucks
Ford Truck


Jeeps


Toyota Trucks


Dodge Trucks

Custom Wheels and Tires
Fuel wheels

Black Rhino wheels

4x4 Suspension & Drivetrain Specialists

Rock Solid 4x4 specializes in suspension and drivetrain service, repair, and upgrades for Jeeps, trucks, SUVs, and four-wheel-drive vehicles. From daily drivers and tow vehicles to overland builds and dedicated trail rigs, our experienced team can help you create a capable, dependable setup built around how you use your vehicle.

Suspension Service & Upgrades

Your suspension affects much more than ride height. It plays an important role in handling, steering, stability, tire clearance, ride quality, and off-road performance. We evaluate the complete suspension system and recommend components that work together properly.

  • Leveling & Lift Installation
  • Leveling Kits
  • Shocks, Struts & Coilovers
  • Springs & Control Arms
  • Track Bars
  • Steering Components
  • Suspension Inspection & Repair
  • Suspension Geometry
  • Ride Height & Tire Clearance
  • Off-Road Suspension Upgrades
  • Handling & Drivability Diagnosis
  • 4x4 Wheel Alignments

  • 4x4 Drivetrain Service & Upgrades

    The drivetrain transfers power to your vehicle's wheels and includes critical components such as the axles, differentials, gears, driveshafts, and transfer case. Larger tires, suspension lifts, towing, and off-road use can place additional demands on these components. Rock Solid 4x4 can help diagnose drivetrain problems and recommend repairs or upgrades suited to your vehicle.

  • Axle Repair
  • Differential Service & Repair
  • Ring & Pinion Installation
  • Gear Ratio Changes
  • Axle Bearings & Seals
  • Lockers & Limited-Slip
  • Driveshaft Service & Upgrades
  • Transfer Case Diagnosis
  • Driveline Vibration Diagnosis
  • 4-Wheel-Drive System
  • Heavy-Duty Drivetrain Upgrades
  • Gearing for Larger Tires

  • A Complete-System Approach

    A successful 4x4 build involves more than installing individual parts. Suspension height, steering geometry, tire size, wheel fitment, axle strength, gearing, and driveline angles all affect how your vehicle performs. Our goal is to build a balanced system that delivers the capability you want while maintaining dependable and predictable operation.

    Whether you are repairing worn factory components, correcting a drivability problem, or planning a complete off-road build, Rock Solid 4x4 will help you determine what your vehicle needs without pushing unnecessary upgrades.

    Built Around How You Drive

  • Daily-Driven Jeeps & Trucks
  • Tow Vehicles
  • Work Trucks
  • Street & Show Builds
  • Overland Vehicles
  • Weekend Trail Rigs
  • Rock Crawlers
  • Custom Off-Road Builds

  • Talk to Rock Solid 4x4 About Your Vehicle

    Not sure which lift, shocks, gears, or drivetrain upgrades are right for your vehicle? Tell us what you drive, how you use it, and what you want to improve. Our team will help you choose a suspension or drivetrain solution that fits your goals.


    Competitive Pricing — Call Rock Solid 4x4 for a Quote

    Ask about package pricing for lift kits, wheels, and tires.