034Motorsport Billet Rear Subframe Insert Kit – BMW F2x / F3x

This billet aluminum insert kit from 034Motorsport is designed to reduce rear subframe movement on BMW F2x and F3x chassis vehicles. By filling the voids in the factory rubber mounts, the rear end remains more stable under load, improving overall handling consistency.

Benefits

• Limits unwanted rear subframe movement
• Helps maintain suspension geometry during cornering
• Improves rear axle and differential response
• Minimal or no noticeable increase in NVH during normal driving

Construction and features

• Machined from 6061 billet aluminum
• Precision CNC-machined for accurate fitment
• Anodized finish for long-term durability
• Designed to work in conjunction with factory rubber bushings
• Fully reversible upgrade

OEM References (Part Number Exchange)

• Front subframe bushing: BMW OEM 33 31 6 792 509
• Rear subframe bushing: BMW OEM 33 31 6 792 511

Kit includes

• (2) Upper front inserts
• (2) Upper rear inserts
• (2) Lower front inserts
• (2) Lower rear inserts

Installation

The inserts install at the factory rear subframe mounting points without permanent modification. Installation is straightforward with basic tools and the vehicle can be returned to stock if desired.

034Motorsport part number: 034-601-0052