BMW

BMW Strut Tower Reinforcement Kit - F2X/F3X (31302285700KT)

Name: BMW Strut Tower Reinforcement Kit - F2X/F3X (31302285700KT)
Brand: BMW

Medium installMPN: 31302285701

Set your vehicle to confirm fitment — see full vehicle fitment

From $314.50

Where to buy

FCP Euro$314.50
In Stock
Free shipping over $49Price confirmed Aug 27, 2026View (opens FCP Euro in a new tab)

Overview

Genuine BMW strut tower reinforcement kit sourced from the F8X M3/M4, designed for F2X 2-Series and F3X 3-Series vehicles with x3 M10 bolt top strut mounts. This bolt-on kit reduces chassis flex and improves handling response when running upgraded suspension with higher spring rates, reduced suspension travel, or performance tires. Kit includes two reinforcement plates (left/right), six M10x30 bolts with flange, and two M10x20 radiator support tie bar bolts.

Vehicle Fitment
33 configurations

BMW 228i(F22)
N20
2014–2016
BMW 228iLikely fits — confirm with retailer(F23)
N20
2015–2016
BMW 228i xDrive(F22)
N20
2015–2016
BMW 228i xDriveLikely fits — confirm with retailer(F23)
N20
2015–2016
BMW 320iLikely fits — confirm with retailer(F30)
N20
2013–2015
BMW 320i xDriveLikely fits — confirm with retailer(F30)
N20
2013–2015
BMW 328dLikely fits — confirm with retailer(F30)
N47
2014–2015
BMW 328d xDriveLikely fits — confirm with retailer(F30)
N47
2014–2015
BMW 328iLikely fits — confirm with retailer(F30)
N20
2012–2016
BMW 328i GT xDriveLikely fits — confirm with retailer(F34)
N20
2014–2016
BMW 328i xDriveLikely fits — confirm with retailer(F30)
N20
2013–2016
BMW 335iLikely fits — confirm with retailer(E92)
N55
2012–2013
BMW 335iLikely fits — confirm with retailer(E93)
N55
2012–2013
BMW 335iLikely fits — confirm with retailer(F30)
N55
2012–2015
BMW 335i xDriveLikely fits — confirm with retailer(E92)
N55
2013
BMW 335i xDriveLikely fits — confirm with retailer(F30)
N55
2013–2015
BMW 428iLikely fits — confirm with retailer(F32)
N20
2015–2016
BMW 428iLikely fits — confirm with retailer(F33)
N20
2015–2016
BMW 428i Gran CoupeLikely fits — confirm with retailer(F36)
N20
2015–2016
BMW 428i xDriveLikely fits — confirm with retailer(F32)
N20
2015–2016
BMW 428i xDriveLikely fits — confirm with retailer(F33)
N20
2015–2016
BMW 428i xDrive Gran CoupeLikely fits — confirm with retailer(F36)
N20
2015–2016
BMW 435iLikely fits — confirm with retailer(F32)
N55
2014–2015
BMW 435iLikely fits — confirm with retailer(F33)
N55
2014–2015
BMW 435i Gran CoupeLikely fits — confirm with retailer(F36)
N55
2015
BMW 435i xDriveLikely fits — confirm with retailer(F32)
N55
2014–2015
BMW 435i xDriveLikely fits — confirm with retailer(F33)
N55
2014–2015
BMW 435i xDrive Gran CoupeLikely fits — confirm with retailer(F36)
N55
2015
BMW ActiveHybrid 3Likely fits — confirm with retailer(F30)
N55
2013–2015
BMW M235iLikely fits — confirm with retailer(F22)
N55
2014–2016
BMW M235iLikely fits — confirm with retailer(F23)
N55
2015
BMW M235i xDriveLikely fits — confirm with retailer(F22)
N55
2015–2016
BMW M235i xDriveLikely fits — confirm with retailer(F23)
N55
2015

Installation summary

This medium difficulty suspension upgrade can be successfully tackled by experienced DIY mechanics who have the proper tools and workspace. Preparation requires a professional-grade spring perch tool if adjusting coiling settings, along with a standard socket set to access the top strut mounts and radiator support tie bar locations. The most critical thing to watch out for is ensuring proper torque on all six M10x30 flange bolts while maintaining your target ride height, as a complete wheel alignment is strictly required immediately following the installation to prevent abnormal tire wear and restore factory handling geometry.

AI-generated overview — always verify against the official install instructions.

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