Rev9 Hyper-Street 3 V2 Coilovers for BMW 4 Series 430I / M440I (G22/G23) 2021-2025

Rev9 Hyper-Street 3 V2 Coilovers for BMW 4 Series 430I / M440I (G22/G23) 2021-2025

Build your BMW 4 Series 430I / M440I around a more adjustable suspension package with the Rev9 Hyper-Street 3 V2 coilover kit for BMW 4 Series 430I / M440I (G22/G23) 2021-2025. Part RST-AZE-X104_2 offers 32-level damping adjustment and separate ride-height setup, with the front and rear hardware listed in the specifications below. It gives you a useful foundation for choosing a stance and response that suit the vehicle’s wheels, tires, and driving use.

🏎️ A Setup for Your BMW 4 Series 430I / M440I

BMW applications can vary by drivetrain, front top-mount bolt pattern, chassis, and factory electronic suspension. Match those details before ordering. Once installed, use ride height to establish a usable stance and the damping adjusters to refine suspension response, with alignment and tire clearance checked as part of the same setup.

🔧 Application-Specific Damper Layout

This application uses inverted mono-tube dampers at the front and standard mono-tube dampers at the rear. The inverted layout places the damper body differently from a conventional upright arrangement. Use the actual front and rear specifications when comparing kits, because the construction and mounting details are selected by application.

🎚️ Tune Height and Damping as a Complete System

Establish a usable ride height and the specified spring preload first, then complete the alignment before comparing damping settings. Small, repeatable adjuster changes make it easier to identify the response you prefer. Keep enough travel and clearance for the roads the vehicle uses, and evaluate the setup with consistent tire pressures and normal vehicle load.

🔧 Features and Hardware

• Hyper-Street 3 V2 coilover suspension package for the listed application.
• 32-level damping adjustment listed for this application.
• Adjustable ride-height setup, independent of the spring-preload setting.
• Application-specific front and rear spring rates and mount details shown below.
• Aluminum adjustment hardware described for the Hyper-Street 3 range.
• Supplied spring rates: 12 kg/mm (672 lbs/inch) front and 14 kg/mm (784 lbs/inch) rear.
• Front top mount: Yes, Camber Plate w/ Pillow Ball. Rear top mount: Yes, Standard Type.

🔧 Spring and Mount Details for RST-AZE-X104_2

The RST-AZE-X104_2 specification lists 12 kg/mm (672 lbs/inch) at the front and 14 kg/mm (784 lbs/inch) at the rear. These are the spring rates supplied for this application, so they are more useful for comparing kits than a general “soft” or “stiff” label. Motion ratio, vehicle weight, tire construction, and damping also affect how the setup feels. The listed front camber plate provides an alignment adjustment point. Its usable range depends on the installation and vehicle clearances.

📋 Vehicle Fitment

• 2021 BMW 4 Series 430I / M440I (G22/G23)
• 2022 BMW 4 Series 430I / M440I (G22/G23)
• 2023 BMW 4 Series 430I / M440I (G22/G23)
• 2024 BMW 4 Series 430I / M440I (G22/G23)
• 2025 BMW 4 Series 430I / M440I (G22/G23)

Manufacturer application: BMW 430i / M440i (G22/G23) 2021-2025

📌 Application Notes

• Factory electronic dampers may require a compatible cancellation module or application-appropriate coding to address suspension warnings. Additional equipment or services may be needed.

📏 Technical Specifications

🏁 About Rev9 Hyper-Street 3 V2

California-based Rev9 has been serving enthusiasts since 2010. Hyper-Street 3 V2 gives builders another step to consider in the Rev9 range, combining its application-specific inverted-front damper arrangement with 32-level damping adjustment and adjustable ride-height setup. Compare the actual spring rates and mounting hardware below to choose the right package for your BMW 4 Series 430I / M440I build.

🛡️ One-Year Limited Manufacturer Warranty

Rev9 covers defects in materials and workmanship for one year from the original purchase date. Coverage applies to the original purchaser, is non-transferable, and requires proof of purchase. Manufacturer terms, exclusions, and installation/setup requirements apply. Read Rev9’s full coilover warranty terms.

❤️ Why Buy From SuspensionHouse

We started SuspensionHouse in 2014, and we’re enthusiasts just like you. We’re a small, family-owned business and an authorized Rev9 dealer, with a focus on fast shipping, helpful communication, and parts we’re excited to put on our own builds. Every order supports our family’s business. Thanks for checking us out and letting us be part of your build.

Part #: RST-AZE-X104_2

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