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Complete Pre-Runner Kit with FOX 3.0 | 2019-2024 GM Silverado/Sierra 1500 2WD

BJK1140
  • Bolt-In Install: No cutting or welding needed (unless using OE axle).
  • Extreme Durability: Built from premium aluminum for strength.
  • Enhanced Off-Road Performance: 6 inch wider track, 15.5" travel.
  • Race-Proven Shocks: Fox 3.0 IBP Coilovers with DSC for top performance.
  • Custom Axle Options: Choose Dana 60 or modify OE axle.
Pricing: $30,525.74

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Description

Dominate Any Terrain with this Pre-Runner Kit

If you’re aiming for the pinnacle of performance and want to conquer whatever Mother Nature throws your way, look no further than this pre-runner kit for the 2019-2024 Chevy Silverado and GMC Sierra 1500 2WD. From design to engineering to manufacturing, absolutely no compromises are made, ensuring that your driving experience is nothing short of transformative. This isn’t just an upgrade—it’s a full-blown overhaul that delivers more smiles per gallon and grants you absolute control both on and off the road.

This is the same high-octane technology we put into our race trucks—vehicles that devour miles of unforgiving desert terrain. With the Baja Kits Pre-Runner kit, you’re getting race-proven performance forged in the heat of competition. It’s the kind of performance that laughs at rocky trails, sandy dunes, and anything else the wilderness can dish out.

Race-Bred Engineering

Drawing from the world of professional off-road racing, we’ve crafted a suspension system that offers unmatched quality and performance. Built from race-proven materials like 6061-T6 billet aluminum for the front upper control arms and 7075-T6 aluminum for the trailing arms, these components are engineered to the same standards as those found in elite race trucks. This means you can tackle the most challenging environments with confidence, knowing your suspension system is designed to perform under the most extreme conditions, providing the stability and control you need for an unparalleled driving experience.

Unmatched Durability

Durability isn’t just a feature—it’s a promise. The kit includes internally boxed and gusseted front lower control arms made from high-strength steel, and Mevotech TTX lower ball joints with heavy-duty, greaseable designs. These components are built to withstand the most punishing off-road conditions, ensuring your suspension system remains reliable and maintenance-free for years to come. Push your vehicle harder, explore more adventurous paths, and spend less time worrying about upkeep—focus on what truly matters: the drive.

Superior Off-Road Capability

With up to 15.5 inches of usable wheel travel, this suspension system doesn’t just lift your truck—it elevates your entire off-road experience. The custom RCV CV shafts are engineered to handle the increased travel, offering a maximum angle of +/- 35 degrees for the articulation needed to conquer extreme obstacles. The kit also includes Fox 2.0 IFP bump stops, designed to manage the last 22% of wheel travel, ensuring smooth landings after every jump or impact. This advanced capability allows you to explore without limits, confidently navigating the most demanding terrains while enjoying a smoother, more controlled ride.

Precision-Tuned Performance

Performance is all about precision, and we’ve meticulously tuned every component to suit your vehicle. The Fox 3.0 Factory Race Series internal bypass shocks included in this kit have undergone nearly 200 tuning adjustments during rigorous testing in challenging environments like Ocotillo, CA, and Plaster City. The result? A ride quality that strikes the perfect balance between comfort and control, making your truck more capable, responsive, and enjoyable to drive across any terrain.

Specs and Features


True Bolt-In Design


  • Installation Type: 100% Bolt-In
  • Modification Requirements: Welding is needed when using OE axle.

Enhanced Track Width and Travel

  • Track Width Increase: 6 inches
  • Front Wheel Travel: 14.5 inches of usable travel
  • Rear Wheel Travel: 15.5 inches of usable travel

High-Performance Shocks

  • Shocks: Fox 3.0 IBP Factory Race Coil Over Shocks with Dual Speed Compression (DSC)
  • Bump Stops: Fox 2.0 IFP
  • Steering Stabilizer: Custom-designed to absorb impacts

Premium Materials

  • Upper Control Arms: Machined from 6061-T6 aluminum
  • Rear Lower Trailing Arms: Crafted from a single piece of 7075-T6 aluminum

Customizable Rear Axle Options

  • Option 1: Dana 60 rear axle with 3:73 front differential gears and installation kit
  • Option 2: Weld-on brackets to modify the OE axle

RCV CV Shafts

  • Design: Engineered to handle increased track width
  • Maximum Angle: +/- 35 degrees

Fabricated Lower Control Arms

  • Material: Fabricated steel construction
  • Installation: Bolts directly into the OE location

HD Steering Knuckle

  • Material: HD version of OE steering knuckle
  • Strength: Increased robustness for demanding off-road conditions

Development


The Pre-Runner kit for your GM truck has undergone extensive testing to ensure it meets the highest standards of performance and durability. We didn’t just simulate off-road conditions—we took this system into some of the most challenging environments to push it to its limits.

Testing Locations:

  • Ocotillo, CA: Known for its rough, varied terrain, Ocotillo offers a real-world testing ground that mimics the harsh conditions you might face in extreme off-road situations.
  • Plaster City, CA: This desert region is famous for its high-speed, high-impact environments, perfect for testing the durability and performance of off-road suspension systems.

Comprehensive Testing Metrics

  • Total Miles Logged: Over 16,000 miles of real-world testing, including both on-road and off-road scenarios.
  • Off-Road Durability Miles: More than 9,465 miles logged in rigorous off-road conditions.
  • On-Road Testing: Over 6,535 miles of on-road testing to ensure balanced performance in all driving conditions.
  • Hours Logged: A total of 185 hours of active testing time was spent pushing this suspension system to its limits.

Validation Through Real-World Testing

  • Issue Identification and Resolution: During testing, 96 line items were identified as potential issues, all of which were addressed and resolved before finalizing the product.
  • High-Stress Testing: The suspension system was subjected to high-stress scenarios, including jumps, sharp turns, and rough landings, to ensure it could handle extreme impacts without compromising performance.
  • Component Durability: Each component, from the control arms to the steering knuckles, was tested for durability under continuous use, validating their ability to withstand harsh conditions without degradation.

Real-World Performance

The comprehensive testing and validation process ensures that your new suspension setup isn’t just capable in theory—it’s proven in practice. From tackling rocky trails to gliding over sandy dunes, this system delivers consistent, reliable performance.

Key Validation Points:

  • Shock Absorption: Tested to handle the most aggressive off-road scenarios with minimal impact to the driver, ensuring a smoother, more controlled ride.
  • Durability: Proven to withstand continuous high-impact use, making it a reliable choice for serious off-road enthusiasts.
  • Handling and Stability: Validated across a variety of terrains to ensure superior handling and stability, even in the most demanding conditions.

What's Included


Items for BJK11403FRS (with Dana 60 Ultimate Option)

  • Front Box Kit with Bump Stops
  • Front Upper Control Arms (UCA)
  • Front Lower Control Arm (LCA) - Driver Side (DS)
  • Front Lower Control Arm (LCA) - Passenger Side (PS)
  • Trailing Arm Mount Box Kit - 1
  • Trailing Arm Mount Box Kit - 2
  • Rear Upper Control Arm (UCA)
  • Rear Trailing Arm
  • Rear Axle Components
  • Steering Knuckle - Driver Side (DS)
  • Steering Knuckle - Passenger Side (PS)
  • Dana Ultimate 60 Replacement Rear Axle 3.73 Ratio
  • BDS Front Coilover, Internal Bypass, 8.22”, 3.0 Series, Recirc R/R, DSC, Left
  • BDS Front Coilover, Internal Bypass, 8.22”, 3.0 Series, Recirc R/R, DSC, Right
  • BDS Rear Coilover, Internal Bypass, 11.47”, 3.0 Series, Recirc R/R, DSC, Left
  • BDS Rear Coilover, Internal Bypass, 11.47”, 3.0 Series, Recirc R/R, DSC, Right
  • FOX Rear Bump Stop 2.0 Series, IFP, 2.00" Travel, 10.00" EXT
  • Bump Stop, Eyelet Ends, 2.0 Series, IFP, 1.30" Travel, 10.19" EXT
  • FOX Steering Damper

Included items for BJK11404FRS (OE Axle Option)

  • Front Box Kit with Bump Stops
  • Front Upper Control Arms (UCA)
  • Front Lower Control Arm (LCA) - Driver Side (DS)
  • Front Lower Control Arm (LCA) - Passenger Side (PS)
  • Trailing Arm Mount Box Kit - 1
  • Trailing Arm Mount Box Kit - 2
  • Rear Upper Control Arm (UCA)
  • Rear Trailing Arm
  • Steering Knuckle - Driver Side (DS)
  • Steering Knuckle - Passenger Side (PS)
  • Weld On Rear Axle Components
  • BDS Front Coilover, Internal Bypass, 8.22”, 3.0 Series, Recirc R/R, DSC, Left
  • BDS Front Coilover, Internal Bypass, 8.22”, 3.0 Series, Recirc R/R, DSC, Right
  • BDS Rear Coilover, Internal Bypass, 11.47”, 3.0 Series, Recirc R/R, DSC, Left
  • BDS Rear Coilover, Internal Bypass, 11.47”, 3.0 Series, Recirc R/R, DSC, Right
  • FOX Rear Bump Stop 2.0 Series, IFP, 2.00" Travel, 10.00" EXT
  • Bump Stop, Eyelet Ends, 2.0 Series, IFP, 1.30" Travel, 10.19" EXT
  • FOX Steering Damper

FAQ

1. Does this kit include detailed installation instructions?

Yes, the kit comes with detailed installation instructions. These instructions cover all the necessary steps to ensure proper installation, guiding you through the process from start to finish. It is highly recommended that the installation is carried out by a professional to ensure everything is fitted correctly and functions as intended.

2. What maintenance is required for this suspension system?

The suspension system is designed to be low-maintenance, with high-quality components such as Mevotech TTX lower ball joints, which are heavy-duty and greaseable. Regular inspections and greasing of the joints are recommended to maintain optimal performance. The materials, such as 6061-T6 aluminum and 7075-T6 aluminum, are selected for their durability and long life, reducing the need for frequent maintenance.

3. How does the installation of this suspension system affect the vehicle’s on-road performance?

While the suspension system is engineered for off-road performance, it also maintains excellent on-road drivability. The system's components, including the Fox 3.0 IBP Factory Race Coil Over Shocks with DSC, have been tuned to offer a balance between comfort and control, ensuring stable handling on highways and city streets without compromising the vehicle’s off-road capabilities.

4. Can I use this suspension system with the stock axle, or do I need to upgrade?

This kit offers customizable options depending on your needs. You can use the stock axle with the weld-on bracket option, or upgrade to the high-performance Dana 60 rear axle with 3.73 front differential gears and an installation kit for enhanced off-road performance. This flexibility allows you to tailor the system to your specific requirements.

5. What are the key durability features of this suspension system?

The suspension system includes several durability-focused features such as internally boxed and gusseted front lower control arms made from high-strength steel, and fabricated lower control arms bolted directly into the OE location for enhanced strength. The system's premium materials, including the 6061-T6 and 7075-T6 aluminum components, are designed to withstand extreme off-road conditions while remaining maintenance-free for extended periods.

6. What testing has been done to ensure the reliability of this suspension system?

The Pre-Runner kit has undergone rigorous testing in extreme off-road conditions, including over 16,000 miles of real-world testing, with more than 9,465 miles logged in off-road scenarios. The system has also undergone nearly 200 shock tuning adjustments to achieve the optimal balance between on-road comfort and off-road performance, ensuring it can handle the most demanding environments.

7. Can I use this suspension system for competitive off-road racing?

Yes, this suspension system is crafted from race-proven materials and engineered to the same standards as those found in professional race trucks. With components like the Fox 3.0 IBP Factory Race Coil Over Shocks and RCV CV Shafts, the system is built to handle the rigors of competitive off-road racing while providing durability and performance in extreme conditions.

8. How is my Pre-Runner kit going to be shipped?

The kit is shipped on multiple pallets via LTL (Less Than Truckload) freight. This method ensures that all components are securely packaged and delivered to you in optimal condition. Due to the size and weight of the shipment, it is important to have adequate space and equipment available to receive the delivery.

Warranty

Baja Kits Chase it or Race it Warranty

Whether you are driving to work, or you are blasting across the desert, racing your buddies, or chasing the pro’s, you are covered by our warranty. The breakdown of the warranty is below.

Lifetime warranty on all components and fabricated products

All our Baja Kits products are designed to handle serious abuse on-road and off. Because of that, we offer a lifetime warranty on all components and fabricated products. You didn’t buy the best to baby it, play hard, we have your back!

All bushings, uni-balls, and Heim’s are 12 month warranty

Racecar parts make racecar noises. You have bought some serious hardware, bred in racing and developed for dual-purpose street and play. Hearing a squeak might not be an indication of a worn product. That can simply be an indication of a dry joint. Movement and “play” are the key indicators for a worn part. Our tech team is standing by to help answer the question, educate on maintenance and operation, and take care of you if parts are needed.

Product finish is a 12-month warranty

It must look as good as it performs. We take pride in building quality products and making sure their finish reflects the time and effort it took to create them. Because of this, we offer a 12-month warranty on the finish of all our products based on workmanship. Damage caused by use and abuse is appreciated and approved, but we cannot cover it on warranty.

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