Superpro

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Product Specification:

SKU:SPRSPF3946K

MPN: SPF3946K

UPC: 9317745039464

Weight: 6.9 lb

Inventory: 4

Type: Bushing Kits

Description

Vehicle Fitment

• 2003-2012 BMW 1 Series E87/E81 RWD
• 2007-2013 BMW 1 Series E82/E88 RWD
• 2010-2019 BMW 1 Series F20/F21 RWD
• 2013-2018 BMW 2 Series F22/F23 RWD
• 2004-2013 BMW 3 Series E90/E91/E92/E93 RWD/AWD
• 2013-on BMW 4 Series F32/F33/F36 RWD

Features

• High-quality polyurethane bushings replace worn factory rubber mounts in rear sub-frame front and rear positions.
• Restores subframe stiffness, improving chassis stability and handling precision.
• Includes steel insertion tubes for accurate fitment and optimal load distribution.
• Resistant to oil, water, coolant, and extreme temperatures for durability.
• Reduces sub-frame movement, enhances drivetrain feel, and maintains tyre wear consistency.
• Lifetime manufacturer warranty against defects.
• Direct-fit replacement while retaining proper suspension geometry.
• Installation time approximately 5 hours; full rear wheel alignment required post-installation.

Specifications

• Material: SuperPro proprietary polyurethane
• Fitting position: Rear axle - sub-frame front & rear bush kit
• Kit includes full set of bushings plus steel insertion tubes
• Installation difficulty: High - specialist tools required; alignment mandatory

Included Components

• Multiple polyurethane bushings (complete sub-frame kit)
• Steel insertion tubes/sleeves
• Installation instructions

Product Description

The SuperPro SPF3946K Rear Subframe Front & Rear Bush Kit upgrades or replaces critical sub-frame mounts on BMW 1, 2, 3, and 4 Series vehicles with rear-wheel-drive configurations. Factory rubber mounts can degrade over time, causing sub-frame movement that negatively affects alignment, handling, and tyre wear. This kit restores structural integrity with engineered polyurethane bushings and steel inserts for improved chassis control and driving dynamics.

Installation requires removal or access to the rear sub-frame mounts to press out old rubber and fit new polyurethane components. Because these mounts affect rear geometry, a full rear wheel alignment is required after installation. Fitment is confirmed for the listed model years and platforms. Verify compatibility with your specific trim, engine, and drivetrain before purchase.