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Designed and engineered in-house in the UK, the MMR differential insert kit for the BMW F2x and F3x chassis is designed to limit movement in the factory diff mounts to maintain proper suspension geometry when cornering and improve the responsiveness of the rear suspension and diff. Installation is very simple, can be performed in under an hour, and is completely reversible.
By filling small voids in the four factory mounts as well as limiting vertical movement, the insert set eliminates the associated slop to ensure that you experience a more refined, connected driving experience, especially when driving at the limit. The billet aluminum parts will not wear over time and offer a lasting performance improvement.
Worried about noise? NVH is a measurement of how much noise, vibration, & harshness gets transmitted into a vehicle's cabin. Based on feedback, MMR inserts transfer little to none NVH into the cabin. NVH is subjective, so some users may find NVH to be increased or decreased from our rating. If you are experiencing higher than quoted NVH with this product, please evaluate the installation to ensure the components are installed correctly.
The BMW F2x and F3x series use rubber diff mounts that deflect under load, causing the rear end to feel vague and loose, as well as leading to less-than-optimal suspension geometry and increased understeer. These precision-machined billet aluminum inserts are designed to fill voids in the factory diff mounts, and limit diff movement without sacrificing ride quality or introducing any perceivable additional noise, vibration, or harshness into the cabin. The result is a more refined, connected driving experience, as well as improved effectiveness of aftermarket rear sway bar upgrades and suspension components.
These inserts were tested extensively by MMR and independent BMW enthusiasts before release on multiple F2x and F3x vehicles. Our diff inserts fit diesel, petrol, manual and auto variants.
Features:
Fitment:
By filling small voids in the four factory mounts as well as limiting vertical movement, the insert set eliminates the associated slop to ensure that you experience a more refined, connected driving experience, especially when driving at the limit. The billet aluminum parts will not wear over time and offer a lasting performance improvement.
Worried about noise? NVH is a measurement of how much noise, vibration, & harshness gets transmitted into a vehicle's cabin. Based on feedback, MMR inserts transfer little to none NVH into the cabin. NVH is subjective, so some users may find NVH to be increased or decreased from our rating. If you are experiencing higher than quoted NVH with this product, please evaluate the installation to ensure the components are installed correctly.
The BMW F2x and F3x series use rubber diff mounts that deflect under load, causing the rear end to feel vague and loose, as well as leading to less-than-optimal suspension geometry and increased understeer. These precision-machined billet aluminum inserts are designed to fill voids in the factory diff mounts, and limit diff movement without sacrificing ride quality or introducing any perceivable additional noise, vibration, or harshness into the cabin. The result is a more refined, connected driving experience, as well as improved effectiveness of aftermarket rear sway bar upgrades and suspension components.
These inserts were tested extensively by MMR and independent BMW enthusiasts before release on multiple F2x and F3x vehicles. Our diff inserts fit diesel, petrol, manual and auto variants.
Features:
- Black Anodized 6061-T6 Billet Aluminum with stainless setter retaining
- Designed to reduce differential movement while keeping NVH to a minimum
- Reduces differential movement under acceleration, gear shift and deceleration
- Fills OE bushes voids to minimize component movement
- Simple installation with differential remaining installed
- Helps maintain correct suspension geometry under dynamic loading
Fitment:
- BMW 1 Series F20 2012-2018
- BMW 2 Series F22/F23 2014-2021
- BMW 3 Series F30/F31 2012-2018
- BMW 3 Series Gran Turismo F34
- BMW 4 Series F32/F33 2014-2019
- BMW 4 Series Gran Coupe F36 2018
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| Vehicle Make/Model | Year | Trims |
|---|---|---|
| BMW 118i | 2012-2015, 2018 | Sport Line |
| BMW 118i | 2012-2015 | Base |
| BMW 118i | 2012-2015 | Urban Line |
| BMW 118i | 2013-2015 | M Sport |
| BMW 120i | 2012, 2016-2017 | Base |
| BMW 120i | 2012, 2016-2018 | M Sport |
| BMW 120i | 2012 | Style |
| BMW 120i | 2012 | Dynamic |
| BMW 120i | 2016-2017 | Urban Line |
| BMW 120i | 2016-2018 | Sport Line |
| BMW 125i | 2012-2013 | Base |
| BMW 125i | 2013 | M Sport |
| BMW 128i | 2012-2013 | Base |
| BMW 128i | 2013 | M Sport |
| BMW 135i | 2012-2013 | Base |
| BMW 135i | 2012-2013 | M Sport |
| BMW 135is | 2013 | Base |
| BMW 220i | 2014-2018 | Sport Line |
| BMW 220i | 2014-2017 | Base |
| BMW 220i | 2016 | Active Tourer |
| BMW 220i | 2017-2018 | Gran Tourer Luxury |
| BMW 220i | 2018 | Executive |
| BMW 228i | 2014-2016 | Base |
| BMW 228i xDrive | 2015-2016 | Base |
| BMW 230i | 2017-2018 | Base |
| BMW 230i xDrive | 2017-2018 | Base |
| BMW 320i | 2012, 2016-2018 | Base |
| BMW 320i | 2016 | Luxury |
| BMW 320i | 2016 | Sport |
| BMW 320i | 2016, 2018 | M Sport |
| BMW 320i | 2017-2018 | Sport Line |
| BMW 320i | 2018 | Executive |
| BMW 320i xDrive | 2016-2018 | Base |
| BMW 325i | 2012 | Exclusive |
| BMW 325i | 2012-2013 | Base |
| BMW 325i | 2012 | Progressive |
| BMW 325i | 2012 | Premium |
| BMW 325i | 2012-2013 | Edition Exclusive |
| BMW 325i | 2012 | Navi |
| BMW 325i | 2012 | Sport |
| BMW 325i | 2012-2013 | M Sport |
| BMW 325i | 2012 | Business |
| BMW 328d | 2016-2017 | Base |
| BMW 328d xDrive | 2016-2017 | Base |
| BMW 328i | 2012, 2016 | Base |
| BMW 328i | 2012 | Sport |
| BMW 328i | 2012 | Luxury |
| BMW 328i | 2012 | Modern |
| BMW 328i GT xDrive | 2016 | Base |
| BMW 328i xDrive | 2012, 2016 | Base |
| BMW 330e | 2016 | Base |
| BMW 330e | 2017 | iPerformance |
| BMW 330i | 2016, 2018 | M Sport |
| BMW 330i | 2016 | Luxury |
| BMW 330i | 2016 | Sport |
| BMW 330i | 2017-2018 | Base |
| BMW 330i | 2017 | Luxury Line |
| BMW 330i | 2017-2018 | Sport Line |
| BMW 330i GT xDrive | 2017-2018 | Base |
| BMW 330i xDrive | 2017-2018 | Base |
| BMW 335i | 2012 | Modern |
| BMW 335i | 2012 | Luxury |
| BMW 335i | 2012 | Sport |
| BMW 335i | 2012 | Base |
| BMW 335i | 2012 | M Sport |
| BMW 335i | 2012 | Exclusive |
| BMW 335i GT xDrive | 2016 | Base |
| BMW 335i xDrive | 2012 | Base |
| BMW 335is | 2013 | Base |
| BMW 340i | 2016-2018 | M Sport |
| BMW 340i | 2016 | Luxury |
| BMW 340i | 2016 | Sport |
| BMW 340i | 2016-2018 | Base |
| BMW 340i GT xDrive | 2017-2018 | Base |
| BMW 340i xDrive | 2016-2018 | Base |
| BMW 420i | 2016-2017 | Base |
| BMW 420i | 2017 | Gran Coupe Base |
| BMW 420i | 2018-2019 | Sport Line |
| BMW 420i | 2018-2019 | Executive |
| BMW 420i Gran Coupe | 2016 | Base |
| BMW 420i Gran Coupe | 2018-2019 | Executive |
| BMW 420i Gran Coupe | 2018-2019 | Sport Line |
| BMW 428i | 2014 | Sport Line |
| BMW 428i | 2014-2016 | Sport |
| BMW 428i | 2014-2016 | Luxury |
| BMW 428i | 2014 | Luxury Line |
| BMW 428i | 2014-2016 | Base |
| BMW 428i Gran Coupe | 2015-2016 | Sport |
| BMW 428i Gran Coupe | 2015-2016 | Luxury |
| BMW 428i Gran Coupe | 2015-2016 | Base |
| BMW 428i xDrive | 2014-2016 | Base |
| BMW 428i xDrive Gran Coupe | 2015-2016 | Base |
| BMW 430i | 2017 | Gran Coupe Sport Line |
| BMW 430i | 2017-2019 | Base |
| BMW 430i | 2017-2019 | Sport Line |
| BMW 430i Gran Coupe | 2017-2019 | Base |
| BMW 430i Gran Coupe | 2018-2019 | Sport Line |
| BMW 430i xDrive | 2017-2019 | Base |
| BMW 430i xDrive Gran Coupe | 2017-2019 | Base |
| BMW 435i | 2014-2016 | Base |
| BMW 435i | 2014-2016 | M Sport |
| BMW 435i Gran Coupe | 2015-2016 | M Sport |
| BMW 435i Gran Coupe | 2015-2016 | Base |
| BMW 435i xDrive | 2014-2016 | Base |
| BMW 435i xDrive Gran Coupe | 2015-2016 | Base |
| BMW 440i | 2017-2019 | M Sport |
| BMW 440i | 2017-2019 | Base |
| BMW 440i | 2017 | Gran Coupe M Sport |
| BMW 440i Gran Coupe | 2017-2019 | Base |
| BMW 440i Gran Coupe | 2018-2019 | M Sport |
| BMW 440i xDrive | 2017-2019 | Base |
| BMW 440i xDrive Gran Coupe | 2017-2019 | Base |
| BMW ActiveHybrid 3 | 2013-2015 | Base |
| BMW ActiveHybrid 3 | 2015 | Luxury |
| BMW ActiveHybrid 3 | 2015 | Sport |
| BMW M135i | 2013-2016 | Base |
| BMW M140i | 2017-2018 | Base |
| BMW M235i | 2014-2016 | Base |
| BMW M235i | 2016 | M Sport |
| BMW M235i xDrive | 2015-2016 | Base |
| BMW M240i | 2017-2018 | Base |
| BMW M240i | 2017-2018 | Sport |
| BMW M240i | 2018 | M Performance Edition |
| BMW M240i xDrive | 2017-2018 | Base |
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