AST Adjustable Lowering Spring Kit for BMW G29 Z4 & Toyota A90 Supra (Non-EDC) | ALS Kit

With this set of Height Adjustable Lowering Springs, you’re not limited to a fixed lowering range. Thanks to the precision-engineered AST height adjuster, you can fine-tune your ride height even after installation, providing full flexibility and control. The AST Adjustable Lowering Springs lower your car’s centre of gravity while maintaining the comfort and composure of the factory suspension. Developed as a direct OEM replacement, each kit is purpose-built for the BMW Z4 and Toyota Supra platform, crafted from premium materials using advanced Wafios coiling machines. The progressive spring design ensures the perfect balance between a sportier stance, improved handling, and refined ride comfort. Proudly made in the Netherlands, Europe.

Key Features

• Adjustable ride height for precise tuning post-installation

• Progressive spring rate ensures comfort and performance balance

• Direct OEM replacement for seamless integration

• Produced using state-of-the-art Wafios coiling technology

• Made in the Netherlands from high-quality spring steel

Fitment Notes

• Lowering range may vary depending on model specification

• For Non-EDC (non-electronic damping control) vehicles only

Compatibility

• BMW Z4 (G29) – 2019–Present, non-EDC models including sDrive20i, sDrive30i, and M40i

• Toyota Supra (A90) – 2019–Present, non-EDC models

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.