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Whiteline is a global leader in suspension and handling performance components, delivering high quality products engineered to improve vehicle balance, stability, and driver control. Designed and developed using advanced engineering and testing processes, Whiteline components are trusted by TFS, RG04 BT-50 drivers, enthusiasts, and motorsport pr... Read more
Whiteline is a global leader in suspension and handling performance components, delivering high quality products engineered to improve vehicle balance, stability, and driver control. Designed and developed using advanced engineering and testing processes, Whiteline components are trusted by TFS, RG04 BT-50 drivers, enthusiasts, and motorsport professionals around the world. With a focus on performance, durability, and precision, Whiteline products are designed to enhance the way TFS, RG04 BT-50s respond, handle, and perform in real-world driving conditions.
Upgrading TFS, RG04 BT-50 suspension components is one of the most effective ways to improve vehicle handling, stability, and overall driving performance. Over time, factory suspension components can wear or lose effectiveness, reducing steering response and vehicle control. Performance-focused suspension upgrades help maintain correct suspension geometry, improve tyre contact with the road, and reduce unwanted movement during braking, acceleration, and cornering. With the right MAZDA BT-50 components installed, drivers can experience improved confidence, responsiveness, and overall driving feel.
Selecting the right suspension components depends on the vehicle, driving style, and intended performance goals. Whiteline designs components that help drivers improve handling precision while maintaining everyday drivability. Whether the goal is improving cornering performance, reducing vehicle sway, or sharpening steering response, Whiteline TFS, RG04 BT-50 suspension components are engineered to work together as a complete handling system. Choosing the correct components helps ensure optimal balance between performance, comfort, and control.
Whiteline develops suspension and handling components for TFS, RG04 BT-50s. Products are engineered to integrate with factory suspension systems while improving performance and responsiveness. Whether a TFS, RG04 BT-50 is used for daily driving, spirited road use, or performance-focused applications, Whiteline components are designed to enhance handling characteristics while maintaining reliability and durability.
Whiteline offers a comprehensive range of suspension and handling components designed to improve TFS, RG04 BT-50 balance, control, and cornering performance. Each product is engineered to deliver consistent performance while maintaining long term reliability.
Steering and alignment components play an important role in maintaining precise vehicle control. Whiteline designs components that help improve steering accuracy, maintain proper alignment, and reduce unwanted movement within the suspension system. These upgrades help deliver sharper steering response, improved driver feedback, and greater confidence behind the wheel.
Whiteline TFS, RG04 BT-50 suspension components are engineered to improve vehicle stability, balance, and overall handling performance. By managing suspension movement and maintaining proper geometry, these components help reduce body roll, improve tyre contact, and enhance cornering performance. The result is more predictable vehicle behaviour and improved driver control across a range of driving environments.
Whiteline TFS, RG04 BT-50 suspension components can be installed by experienced DIY enthusiasts or professional workshops. Proper installation ensures components perform as intended and deliver optimal handling improvements. Professional installation is recommended to ensure correct setup, alignment, and overall system performance.
Explore Whiteline’s full range of TFS, RG04 BT-50 suspension and handling components designed to improve vehicle balance, steering response, and overall driving performance. Whether enhancing everyday driving or refining handling performance, Whiteline provides engineered solutions trusted by TFS, RG04 BT-50 drivers worldwide.
 Warranty | 3 years warranty or up to 60,000km |
|---|---|
 Installation Time | 2 Hours |
 Kits Required | 1 |
| Warranty | lifetime warranty |
|---|---|
| Installation Time | 3 Hours |
| Kits Required | 1 |
| Warranty | lifetime warranty |
|---|---|
| Installation Time | 1.5 Hours |
| Kits Required | 1 |
| Warranty | lifetime warranty |
|---|---|
| Installation Time | 2.5 Hours |
| Kits Required | 1 |
KCA514 Steering Knuckle Kit - Bump Steer Correction
Optimizing Steering Geometry for Better Handling and Safety
The KCA514 Steering Knuckle Kit is designed to improve steering geometry and reduce bump steer. It is completely legal and doesn’t require engineering certification or modification plates. This product is VSB 14 approved and ADR compliant. It functions similarly to installing an upper control arm in your vehicle.
Our engineering team has rigorously tested the aftermarket front knuckle (KCA514) to VSB 14 load standards using FEA analysis, assessing it for a front axle rating of 1650kg. The tests confirm that the product exceeds strength requirements. It is compatible with any GVM upgrade.
VSB 14 outlines legal requirements for aftermarket modifications. The KCA514 knuckle is classified as owner-certified, meaning no engineer or certification is needed once installed. This is similar to installing legal modifications such as upper control arms, shocks, or lift kits.
The Australian Design Rules (ADRs) set national safety, anti-theft, and emissions standards for vehicles. While there are no specific ADRs for steering knuckles (similar to control arms or shocks), the KCA514 steering knuckle meets OE (Original Equipment) design standards. As there are no ADRs governing the "robustness of a vehicle," VSB 14 is the primary standard for in-service modifications.
Other similar in-service bolt-on modifications that don’t require engineering or mod plates include:
Whiteline products undergo extensive testing to ensure compliance with relevant engineering standards, offering peace of mind regarding quality.
These vehicles experience chronic bump steer, which leads to significant tire wear. This issue is apparent in both standard-height and lifted versions, but becomes more severe with lift modifications.
The KCA514 steering knuckle provides a direct replacement, replicating all original features and mounting provisions. Made from hot-forged 4140 AISI steel, it’s heat-treated and finished with black e-coat for optimal corrosion resistance.
Pairing KCA514 steering knuckles with upper control arms resolves premature tire wear, improves alignment, and restores proper handling.
No. While wheel alignments may temporarily reduce tire wear, they don’t fix the underlying problem. Alignments are a band-aid solution, not a permanent fix.
After extensive testing, we’ve learned that while an upper control arm may slightly improve bump steer, it doesn’t provide a full solution. Adjusting the steering rack pickup point is necessary to properly address bump steer. Using an upper control arm to fix bump steer would cause other issues, such as tire clearance problems.
The Whiteline steering knuckle is engineered to correct bump steer without introducing new complications.
Bump steer refers to changes in the vehicle’s toe as its ride height changes, especially when driving over bumps. This is particularly problematic when towing, carrying heavy loads, or using a suspension lift. Excessive bump steer causes premature tire wear, as demonstrated in real-world field tests and R&D.
The Whiteline steering knuckle relocates the tie-rod pickup point to optimize the steering geometry and reduce bump steer across different ride heights. Testing shows a 75% reduction in bump steer when these knuckles are installed in lifted vehicles. When installed in standard-height vehicles, bump steer is reduced to nearly zero.
Combining the KCA514 knuckles with offset upper control arms can reduce bump steer by an additional 10-15%.
| Warranty | 3 years warranty or up to 60,000km |
|---|---|
| Installation Time | 4 Hours |
| Kits Required | 1 |
| Warranty | 3 years warranty or up to 60,000km |
|---|---|
| Installation Time | 1.5 Hours |
| Kits Required | 1 |
| Warranty | lifetime warranty |
|---|---|
| Installation Time | 1.5 Hours |
| Kits Required | 2 |
| Warranty | lifetime warranty |
|---|---|
| Installation Time | 3 Hours |
| Kits Required | 1 |
| Warranty | lifetime warranty |
|---|---|
| Installation Time | 1.5 Hours |
| Kits Required | 1 |
| Warranty | lifetime warranty |
|---|---|
| Installation Time | 1 Hour |
| Kits Required | 1 |
| Warranty | lifetime warranty |
|---|---|
| Installation Time | 1 Hour |
| Kits Required | 1 |
| Warranty | 3 years warranty or up to 60,000km |
|---|---|
| Kits Required | 1 |
| Warranty | 3 years warranty or up to 60,000km |
|---|---|
| Kits Required | 1 |
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