HARDRACE BMW Z4 G29/Toyota Supra A90 Rear Knuckle Bushing - Q1383

The HARDRACE Rear Knuckle Bushing (part no. Q1383) is a direct-fit, performance upgrade over the OEM part for the BMW Z4 (G29) and Toyota Supra (Mk5) (A90). Precision-engineered to tighten suspension geometry, sharpen steering response and improve durability under hard road and track use.

Built to a higher standard than the OEM component, it delivers a measurable improvement in feel, longevity, and feedback.

Key Features

• Direct-fit replacement for the OEM component — no chassis modification required

Vehicle Compatibility

• BMW Z4 (G29), 2018–present
• Toyota Supra (Mk5) (A90), 2019–present

What's in the Box

• 1 piece per set

Why HARDRACE?

HARDRACE is a motorsport-developed suspension and chassis brand trusted worldwide for hardened bushings, arms and mounts that outlast and outperform OEM parts. Supplied and supported in the UK by R44 Performance.

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.