1. Introduction
This manual provides detailed instructions for the proper installation, operation, and maintenance of the BST BSSP Heavy Duty Rear Upper and Lower Control Arm Kit. This kit is specifically designed for Jeep Gladiator JT models manufactured from 2019 onwards, and is compatible with vehicles equipped with a 2-5 inch lift kit.
The control arms are engineered to optimize caster and axle positioning on lifted vehicles, utilizing the factory mounting locations for a precise fit. Adherence to these instructions will ensure correct functionality and longevity of the product.
2. Product Features
- Heavy Duty Construction: Manufactured from powder-coated solid carbon steel for enhanced durability and resistance to corrosion.
- Adjustability: Features 1-1/4"-12 threads, providing significant strength and fine-tune adjustability for precise suspension geometry.
- Polyurethane Bushings: Equipped with polyurethane bushings at the non-adjustable ends for quiet operation and reduced maintenance.
- Improved Clearance: CNC formed design ensures proper clearance for tires, frame, and axle mounts.
- Enhanced Articulation: Designed to allow for greater articulation, improving off-road performance.
- Rebuildable Ends: Carbon steel ends are fully rebuildable and greaseable for extended service life.
3. What's in the Box
Upon unpacking, verify that all components are present and undamaged. If any items are missing or damaged, contact customer support immediately.
- 2 x Rear Upper Control Arms
- 2 x Rear Lower Control Arms
- 1 x Hardware Kit
- 1 x Digital Installation Guide (available online or via QR code)
4. Setup and Installation
Estimated Installation Time: Approximately 1-2 hours.
Safety Precautions:
- Always ensure the vehicle is securely supported on jack stands or a lift before beginning work.
- Wear appropriate personal protective equipment, including safety glasses and gloves.
- It is recommended that installation be performed by a qualified professional.
- Refer to your vehicle's service manual for specific torque specifications for all fasteners.
Installation Steps:
- Park the vehicle on a level surface and engage the parking brake.
- Safely lift the rear of the vehicle and support it using jack stands under the frame. Allow the axle to hang freely.
- Carefully remove the factory rear upper and lower control arms. Note the orientation of the original arms for reference.
- Install the new BST BSSP rear upper and lower control arms into the factory mounting locations. Do not fully tighten hardware at this stage.
- Adjust the length of the adjustable control arms as needed to achieve desired caster and axle positioning. The 1-1/4"-12 threads allow for fine-tuning.
- Once the desired length and positioning are achieved, fully tighten all control arm hardware to the vehicle manufacturer's specified torque values.
- Lower the vehicle to the ground.
- After installation, it is critical to have a professional wheel alignment performed to ensure proper vehicle handling and prevent premature tire wear.
Figure 4.1: Overview of the four control arms included in the kit.
Figure 4.2: Detail of a control arm end, highlighting the greaseable design.
5. Operating Considerations
Once installed and properly aligned, these control arms will contribute to maintaining correct suspension geometry on your lifted Jeep Gladiator JT. This is particularly important for vehicles used in off-road conditions, as it helps preserve handling characteristics and component longevity.
The design allows for increased articulation, which is beneficial for navigating uneven terrain. Always operate your vehicle within its design limits and be aware of changes in handling characteristics after suspension modifications.
6. Maintenance
Regular maintenance is crucial for the performance and lifespan of your BST BSSP control arms.
- Inspection: Periodically inspect all control arms, bushings, and mounting hardware for signs of wear, damage, or looseness. This should be done during routine vehicle maintenance or after severe off-road use.
- Greasing: The carbon steel ends are greaseable. Apply appropriate grease to these points at regular intervals (e.g., every oil change or 5,000 miles) to ensure smooth operation and prevent premature wear.
- Fastener Torque: Re-check the torque of all mounting bolts periodically. Loose fasteners can lead to noise, premature wear, and unsafe driving conditions. Refer to your vehicle's service manual for specific torque values.
- Bushing Condition: Inspect polyurethane bushings for cracks, tears, or excessive play. Replace worn bushings to maintain optimal performance and prevent noise.
7. Troubleshooting
| Symptom | Possible Cause | Solution |
|---|---|---|
| Noise (clunking, squeaking) from suspension | Loose mounting hardware, worn bushings, insufficient greasing of rebuildable ends. | Inspect and re-torque all fasteners. Grease rebuildable ends. Inspect and replace worn bushings. |
| Poor vehicle handling, uneven tire wear | Incorrect wheel alignment after installation or adjustment. | Have a professional wheel alignment performed immediately. |
| Difficulty adjusting control arm length | Threads are dirty, corroded, or seized. | Clean and lubricate threads. Do not force adjustments; if seized, professional assistance may be required. |
8. Specifications
- Brand: BST BSSP
- Model Number: BS-101-315
- Fit Type: Vehicle Specific Fit (Jeep Gladiator JT 2019+)
- Auto Part Position: Rear (Upper and Lower)
- Material: Heavy Duty Powder Coated Solid Carbon Steel
- Bushings: Polyurethane
- Thread Size: 1-1/4"-12 (for adjustability)
- Lift Compatibility: Designed for 2-5 inch lift kits
9. Warranty Information
This BST BSSP product comes with a 1-Year Manufacturer Warranty.
The warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from improper installation, abuse, neglect, accidents, or unauthorized modifications. For specific warranty terms, conditions, and claim procedures, please refer to the official BST BSSP website or contact their customer support.
10. Support
For technical assistance, product inquiries, or support regarding your BST BSSP Heavy Duty Rear Upper and Lower Control Arm Kit, please utilize the following resources:
- Online Resources: Refer to the digital installation guide provided with your purchase or visit the official BST BSSP website for additional information and FAQs.
- Customer Service: Contact BST BSSP customer support directly through their official channels for personalized assistance.