Product Details

This Wisefab Rear Suspension Drop Knuckle Kit fits the 2014-2020 BMW 4 Series.

The Wisefab Rear Suspension Drop Knuckle Kit for the 2014-2020 BMW 4 Series (F32) replaces the factory rear geometry with a revised, motorsport-grade layout β€” dropped knuckle, upgraded arms, and optimized roll-center, camber-gain, and anti-squat kinematics. Purpose-built for drift and time attack, this F32 rear kit delivers stronger grip, broader adjustability, and significant weight reduction over OEM components.

Engineered in Estonia and proven across Formula Drift, club-level drift, and time attack, every Wisefab kit is fabricated from high-strength steel and CrMo with all components available as spares to keep you on track. Pair with the matching F32 front angle kit for a complete Wisefab chassis overhaul.

Features

  • Dropped-knuckle geometry with revised roll center and camber gain
  • Upgraded camber, toe, and traction arm hardware
  • Bump-steer adjustability for track alignment
  • Reinforced knuckle construction for race loads
  • Significant weight reduction versus OEM
  • CrMo rod ends and spherical bearings throughout
  • Spare parts available for every component

Kit Includes

  • Left and right dropped knuckles with hardware
  • Upgraded toe, camber, and traction arms (as applicable)
  • Spherical rod ends and bearings
  • Installation guide

Helpful Links

Specifications
Part Number WF221
Part Name Wisefab Rear Suspension Drop Knuckle Kit
Vehicle 2014-2020 BMW 4 Series
Chassis Code F32
Drivetrain RWD
Placement Rear
Notes -

Vehicle fitment

This product fits the vehicles listed below.

YearMakeModelDrivetrainNotes
2014BMW428iRWD
2014BMW430iRWD
2014BMW435iRWD
2014BMW440iRWD
2015BMW428iRWD
2015BMW430iRWD
2015BMW435iRWD
2015BMW440iRWD
2016BMW428iRWD
2016BMW430iRWD
2016BMW435iRWD
2016BMW440iRWD
2017BMW428iRWD
2017BMW430iRWD
2017BMW435iRWD
2017BMW440iRWD
2018BMW428iRWD
2018BMW430iRWD
2018BMW435iRWD
2018BMW440iRWD

Customer Reviews

Questions & Answers