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Radius Arms & Castor & Camber – Restore Stability & Steering After a Lift
Radius Arms & Castor correction parts bring back factory-like steering feel and tyre wear after fitting a suspension lift. Correcting castor angle improves straight-line stability, self-centring and braking control—especially with larger tyres and added accessories.
In this section: Browse all categories • Radius Arms & Castor – Quick Comparison • How to Choose & Install • Related Sections • FAQ
Geometry Correction Options
- Corrected/Offset Bushes: Cost-effective caster gain for mild lifts (≈ +2° to +3° typical).
- Adjustable Radius Arms: Fine-tune castor and wheelbase; heavy-duty joints and bushes for durability.
- Fixed-Correction Arms: Pre-set geometry for common lift heights—quick, bolt-in stability.
- Drop Brackets/Arm Mounts: Reposition arm angle for big lifts while retaining OE arms (platform dependent).
- Hardware & Bush Kits: HD bushes, bolts and washers to refresh worn mounting points.
Radius Arms & Castor – Quick Comparison
| Solution | Best For | Key Benefits | Considerations |
|---|---|---|---|
| Corrected Bushes | ≈ 40–60 mm lifts | Low cost, simple install | Limited adjustment range |
| Fixed-Correction Arms | Common lift heights | Strong, bolt-in geometry | One setting; choose lift-specific |
| Adjustable Arms | Custom setups/tyre sizes | Precise castor & wheelbase tuning | Higher cost; setup required |
| Drop Brackets | Taller lifts | Improves arm angle/ride | Reduced clearance; platform-specific |
How to Choose & Install
- Measure lift & alignment: Confirm current castor, camber and toe after your lift kit.
- Pick a correction path: Use corrected bushes for mild lifts; choose fixed or adjustable arms for heavier builds or fine-tuning.
- Consider pinion angle: On solid-axle rigs, castor changes affect diff pinion angle—balance against driveline vibration.
- Finish with alignment: After installation, perform a professional wheel alignment and road test for self-centring and stability.
Example: A wagon with a 50 mm lift and 33" tyres can run corrected bushes for +2–3° castor, while a heavier build with bar/winch benefits from fixed-correction radius arms for consistent geometry.
Fitment & Compatibility Guide
- Bush quality: Use high-quality rubber or performance bushes to limit NVH and maintain alignment.
- Clearance: Check tyre/wheel clearance on full bump and lock, and verify brake hose routing.
- Fasteners: Torque bolts at ride height to avoid preloading bushes.
- Complementary parts: A steering damper and matched shocks sharpen stability.
Upgrade Sequence Roadmap
| Stage | Focus Area | Why It Matters |
|---|---|---|
| 1 | Baseline Alignment | Identify castor loss from lift height. |
| 2 | Correction Install | Fit bushes/arms to restore geometry. |
| 3 | Road Test & Fine Tune | Assess self-centred, wander and tyre wear. |
| 4 | Complementary Upgrades | Add lift kit accessories as needed (panhard correction, brake lines). |
Related Sections
Frequently Asked Questions
- How much castor do I need after a 2" (≈50 mm) lift?
- Many solid-axle 4x4s drive best with total castor around +3° to +4.5°. Check platform specs and tyre size.
- Will correcting castor fix the steering wobble?
- It helps stability and self-centring, but also inspects bushes, wheel balance and the steering damper.
- Do adjustable arms change wheelbase?
- They can. Small length changes fine-tune axle position. Verify tyre clearance and prop shaft angles.
- Are corrected bushes enough for heavy accessories?
- Often for mild lifts. With bar/winch/dual batteries, fixed-correction or adjustable arms hold geometry better under load.
- Do you ship radius arms & bush kits across Europe?
- Yes. OFM4x4 supplies and ships castor correction bushes, radius arms and hardware throughout the UK and Europe, with local stock options for faster delivery.