Measurements (mm)× 2in kit
- Outer diameterOD70 mm
- Inner diameterID23.9 mm
- Length89 mm
- Flange thicknessFLDI36mmDII25.5mm
- Flange outer diameterFLOD75.9 mm
Centre tubeOD × ID × length, mm24 × 12.3 × 95× 2
SuperPro front lower caster bush kit
Key specs
- PositionFront axle
- Install time3 hours
- Supplied as1 kit2 radius arm bushings, tubes & 1 spacer
- AlignmentNeeded after fitting
- Engineering-grade polyurethane
- Unaffected by heat, oils, water and coolant
- Designed in Australia
Before you fit
- A wheel alignment is needed after fitting.
About this lower caster bush kit
The SuperPro SPF4306K front lower caster bush kit adjustable is designed to hold vehicle alignment, boosting performance, a complete, premium upgrade. It is a superior alternative to rubber, providing higher quality, quieter, longer lasting bushings. SuperPro says its polyurethane bushings provide corrected or maintained steering geometry, better handling, increased safety and improved tyre wear.
Note - Bush OD 70mm & Tube length 95mm
- does not replace Hydro Bearing with a tube length of 80mm
SuperPro SPF4306K
Alignment
- Alignment affectedCaster
- Adjustment typeEccentric
- Adjustable on the carYes
A wheel alignment is needed after fitting.
SuperPro SPF4306K
Specifications
Kit
| Kit type | Front Lower Caster Bush Kit - Adjustable |
|---|---|
| Kits required | 1 |
| Includes | 2 Radius Arm Bushings, Tubes & 1 Spacer |
Fitting
| Fitting position | Front |
|---|---|
| Install time | 3 hours |
| Wheel alignment required | Yes |
Identifiers
| SKU | SPF4306K |
|---|---|
| EAN | 9317745043065 |
SuperPro SPF4306K
Bush dimensions
All sizes in millimetres. The letters on each drawing match the letters on the measurements beside it.
SuperPro warranty
Lifetime warrantyBall joints, tie rod ends, Duroballs and links: 3 year / 60,000kmThis SuperPro part is covered by a lifetime warranty against manufacturing defects, for on-road, off-road, track and competition use. The warranty covers replacement of the original component only. Ball joints, tie rod ends, Duroballs and links are covered for 3 year / 60,000km.
This product: SPF4306K is protected by a lifetime warranty
Our warranty is in addition to your rights under the Australian Consumer Law.
Proof of purchase
Proof of purchase is required, such as your order number. Keep the part and any related components until your claim is finalised.
Common exclusions
- Finish, corrosion and normal wear
- Damage from installation, installation error or not aligning the wheels after fitting
- Labour and consequential costs
- Not fitted to the catalogue-listed application
- Not purchased from Northman
How to make a claim
Fill in the Warranty Request form with your order number, the product, your vehicle details, how the vehicle is used and a description of the problem.
We'll reply within 3–5 business days and ask for clear photos or videos of the part, the problem area and how it's fitted.
Most claims are diagnosed from photos or videos.
SPF4306K
Vehicle fitment
4 vehicles
Choose your vehicle to check fitmentWe’ll tell you if this fits and where it goes.
One position: FrontNo vehicle-specific notes
Applies to every vehicle unless flagged
- Performance Alignment
- Adds +/- 0.5deg caster
| Vehicle | Years | Position |
|---|---|---|
| BMW 1 SeriesF20, F21 | 2011–2019 | Front |
| BMW 2 SeriesF22, F23, F87 (Excl M2) | 2012–2021 | Front |
| BMW 3 SeriesF30, F31, F34, F80 sDrive (Excl. M3) | 2011–2019 | Front |
| BMW 4 SeriesF32, F33, F36, F82, F83 (Excl. M4) | 2013–2020 | Front |
No vehicles match.
Does this fit my car?
Your vehicle
Pick any vehicle. If it is not on this product's fitment list, we cannot guarantee fitment.
Questions about fitment? Call 1800 292 911 before you order.
