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Mini Cooper Suspension Stage 3 Kit Bilstein Sport Gen3 F56 F55 thru 2019

Mini Cooper Suspension Stage 3 Kit Bilstein Sport Gen3 F56 F55 thru 2019

Mini Cooper Suspension Stage 3 Kit Bilstein Sport Gen3 F56 F55 thru 2019
Selected: Stage 3 with Bilstein B8 Sport thru 2019
Part No: G3NMK4031
This item is currently not available.
Expected back in stock after Aug-31-2022
Specially Priced. Discounts Do Not Apply.
Fits the following:
MINI (2002-Current)
Alternate Products
Mini Cooper Suspension Stage 3 Kit KW w/o Dynamic Damper Gen3 F56 thru 2019
$2595.99 Mini Cooper Suspension Stage 3 Kit KW w/o Dynamic Damper Gen3 F56 thru 2019

This Stage 3 Suspension Upgrade kit blends the racing performance experience of Mini Mania with the demands of the enthusiastic MINI street and track driver. Based on the Bilstein B8 Sport Series Struts and Shocks , this kit is intended for the more performance oriented drivers.

Lowered center of gravity with correct dampening and a larger rear bar provides:

  • Improved turn-in response
  • Flatter cornering
  • Neutral cornering without understeer

Fits the following models:

2014-2019 F56 MINI Cooper and Cooper S Hardtop
2015-2019 F55 MINI Cooper and Cooper S Hardtop 4-Door

NOTE: NOT for Minis with Dynamic Damper Control.

The Stage Kits vary depending on the type of Bilstein Struts & Shocks:

  • Stage 3 with Bilstein HD - for improved handling and ride control without sacrificing comfort
  • Stage 3 with Bilstein Sport - for lowered cars delivering a sport ride with remarkable comfort
  • Stage 4 with Bilstein PSS - allows adjustable vehicle ride height without the expense of a fully adjustable damping system
  • Stage 4 with Bilstein PSS10 - manually adjustable damping feature 10-stage precise compression and rebound settings, from comfort to competition

Select accordingly.


This Kit includes:

  • Bilstein B8 Sport Struts & Shocks
  • NM Lowering Springs
  • NM Engineering 25mm Rear Anti-Sway Bar
  • NM Engineering Adjustable Rear Sway Bar Drop Links
  • NM Engineering Adjustable Rear Control Arms

MINI did a wonderful job with the handling on the new 3rd generation F-series MINI, but their design is on the conservative side to appeal to the widest segment of the market. This leaves room for improvement for the 'enthusiast' type driver.

When we talk about 'improving' the suspension, we always begin with a larger rear sway bar. This upgrade reduces the inherent 'understeer' built into the car for safety and provides a more 'balanced' car. This allows you to carry more speed into and out of the corner while keeping the car 'flatter' in the corners. The Adjustable Drop Links replaces the factory 'plastic' units for reliability and adjustability.

The Bilstein Shocks with Lowering Springs lower the center of gravity and keeps the tires planted on the road.

Anytime the MINI is lowered, the rear negative camber is greatly increased and needs to be corrected. This is the reason for the Adjustable Rear Control Arms included in this kit. This kit includes one pair of the adjustable rear control arms which will allow you to correct the rear camber.


If you’re looking for a performance lowering shock absorber or strut, the BILSTEIN B8 Sport Series is up to the task.  Designed to enhance your car’s lowered suspension, BILSTEIN’s monotube gas pressure technology features delivers a sport ride with remarkable comfort.

Features and Benefits:

  • Monotube gas pressure construction
  • High-performance shock absorbers and struts designed specifically for lowering springs and production sport vehicle
  • Sport-tuned with a high level of comfort
  • Precision handling and optimized vehicle control
  • Road-tested and fine-tuned by BILSTEIN


NM Engineering's RS Alpha progressive rate spring kits provide a responsive ride, sharper handling characteristics and lowered ride height. Using exacting spring rates and precision manufacturing techniques, RSa springs provide a more pleasurable motoring experience.

Lowering Rate:

B46/48 (2.0T)
Front: 33mm (1.30")
Rear: 31mm (1.22")

B38 (1.5T)
Front: 30mm (1.2")
Rear: 30mm (1.2")

Drop rates may slightly vary depending on transmission type and fuel level.


Front wheel drive cars naturally understeer from the factory, even the MINIs. The NM Engineering 25mm Rear Anti Sway Bar improves your F-chassis MINI by improving rotation and increasing the car handling predictability.

NM Eng Anti Sway Bar features:

  • mandrel bent solid chromoly bar providing consistent diameter through out for precise torsioning motion
  • forged ends (not cheaply welded plate) with two adjustment mounting holes
  • billet 7075-T6 aerospace grade sway bar bracket
  • 90° Zerk fitting for ease of re-greasing
  • graphite impregnated urethane bushing
  • glossy blue powder coat finish
  • 3-way adjustable preload


MINI cuts cost by equipping the new F55/56 with links made from plastic. It may be sufficient for factory 17-18mm hollow bar but it will not perform optimumly when paired with the larger 22mm Solid Anti Sway Bar. NM ALL METAL Sway Bar Links are far more superior by providing these following benefits:

  • Replacement of factory weak plastic links
  • Provide direct sway bar feedback
  • Adjustable to 15mm shorter than factory length to accomodate extreme suspension drop
  • Can compensate sway bar pre-load from poorly manufactured sway bars (uneven arms)

Key features includes:

  • Heavy duty ball joints with Teflon® lining
  • Stainless Steel Spacers
  • Grade 10.9 Trailing Arm Bolts


Introducing the newly redesigned NM Engineering Control Arm kit. While others use 1" diameter 6061 aluminum material, NM machines our control arms utilizing aerospace grade 7075-T6 1 1/4" hex aluminum bars, finished with titanium tint Type III / Mil-Spec Anodize. The use of larger material provides rigidity and strength of steel bar but without the weight.

NM Control Arm Kit also features precision heavy duty rod ends made from heat treated hardened steel with self lubricating nylon race. The threaded rod ends allow user to dial the suspension camber to desired specs, crucial for the weekend track enthusiasts and professional racers. T-303 stainless steel is used for the spacers to avoid any flexing and crushing caused by suspension load.

Optional Rubber Rod End Boot Kit protects the rod ends against dirt and grime that may cause performance noise. Available separately.