Victorious Automotive · Discovery & Range Rover Sport · Suspension
Front Suspension Lower Control Arm Ball Joint – Discovery 3/4 & Range Rover Sport
OEM-specification replacement ball joints for Land Rover Discovery LR3, LR4, and Range Rover Sport 2005–2013. Engineered for ride comfort, steering response, and suspension geometry accuracy.
RBK500300 / RBK500280
2005–2013
LR3 / LR4 / RR Sport
Left & Right Pair
OEM Specification
Overview
The Discovery 3 (LR3) and 4 (LR4), along with the first-generation Range Rover Sport, demand precise suspension geometry to maintain Land Rover's legendary ride quality and handling. The lower control arm ball joint is the critical pivot point that connects the control arm to the steering knuckle, bearing vertical, lateral, and longitudinal loads with every mile.
This Partsmost replacement set delivers OEM-specification performance without the premium price tag. Manufactured to the original equipment design standards—including load ratings, material composition, and wear resistance—these ball joints restore factory steering feel, reduce play in the front end, and maintain the suspension geometry your Land Rover was engineered for.
Whether you're noticing clunking from the front end, uneven tire wear, or looseness in the steering, worn ball joints are often the culprit. This pair covers both left and right sides, allowing you to restore suspension integrity in one service.
What's Included
⚙️
Lower Control Arm Ball Joint (Left)
RBK500300 or RBK500230
⚙️
Lower Control Arm Ball Joint (Right)
RBK500300 or RBK500230
📋
Installation Guide
Compatible with service manuals
Product Highlights
- OEM-specification design matches Land Rover factory tolerances and load ratings
- Precision machining ensures proper steering geometry and suspension alignment
- Durable ball stud resists wear and maintains smooth articulation over time
- Direct fit—no modifications, adapter plates, or alignment work required
- Both left and right sides included in single purchase
- Improves steering response and reduces front-end clunk and play
- Restores ride comfort and handling characteristics to factory standard
- 12-month warranty against manufacturing defects
- Supports original suspension geometry for tire wear prevention
- Quick installation—typically 1–2 hours per side with basic tools
Compatibility
| Vehicle |
Year Range |
Fit Status |
Part Numbers |
| Land Rover Discovery 3 (LR3) |
2005–2009 |
Direct Fit |
RBK500300, RBK500280 |
| Land Rover Discovery 4 (LR4) |
2010–2013 |
Direct Fit |
RBK500300, RBK500280 |
| Range Rover Sport (L320) |
2005–2013 |
Direct Fit |
RBK500040, RBK500230 |
| Range Rover Sport (L494) |
2014+ |
Not Compatible |
Different suspension design |
Important: Always verify your vehicle's part number before ordering. Check the existing ball joint or consult your service manual to confirm compatibility. If unsure, contact our team at +44 203 943 9919 (Mon–Fri 9am–7pm) with your VIN.
Installation Notes
Difficulty Level: Intermediate
Recommended for experienced DIYers or professional technicians. Requires suspension dismantling, ball joint pressing tools, and wheel alignment afterward.
Estimated Time: 2–4 hours (both sides)
- Lift vehicle safely on jack stands; remove wheel and tire
- Remove brake caliper and rotor (support brake hose)
- Unbolt steering tie-rod end from steering knuckle
- Unbolt upper and lower control arms from steering knuckle
- Remove old ball joint using press tool (or heat and hammer method)
- Press new ball joint into control arm housing with proper seating tool
- Reinstall control arm and knuckle assembly; torque fasteners to spec
- Reinstall brake rotor, caliper, and wheel
- Lower vehicle and perform wheel alignment (critical for tire wear and handling)
- Test drive to confirm smooth steering and no suspension noise
⚠️ Important: Ball joint replacement requires proper pressing equipment and precise torque specifications. Improper installation may affect steering safety and suspension performance. If you lack experience or tools, professional installation is strongly recommended. Always perform wheel alignment after replacement to restore factory geometry and prevent premature tire wear.
Ready to Restore Your Suspension?
Get both left and right lower control arm ball joints for your Discovery 3/4 or Range Rover Sport. Enjoy OEM-specification performance, direct fit, and 12 months of warranty protection.
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Disclaimer: Victorious Automotive is not affiliated with Land Rover, Range Rover, Jaguar Land Rover (JLR), or any official manufacturer. All product names and references are for compatibility and identification purposes only. This product is an aftermarket replacement designed to meet OEM specifications. Always verify fitment with your vehicle's documentation or contact our team before purchase.
