Wisefab
Wisefab Rear Suspension Drop Knuckle Kit, BMW F20 / F21 / F22 / F30 / F32 / F33 / F36 (WF221)
$4,022.64
Taxes and shipping shown at checkout. Typical delivery is 3 to 7 business days across Canada.
✓ Confirmed-fit parts — add your vehicle in your Garage to check fitment.
Rear suspension kit for BMW's F-series 1, 2, 3 and 4 Series with revised kinematics for a lowered car. The knuckle has built-in bump steer and anti-squat adjustment, and the factory ABS sensor stays.
Fits
- BMW 1 Series (F20)
- BMW 1 Series (F21)
- BMW 2 Series (F22)
- BMW 3 Series (F30)
- BMW 4 Series (F32)
- BMW 4 Series (F33)
- BMW 4 Series (F36)
Before you order
- Does not fit the F87 M2.
- Factory F-series brakes do not fit. Use BMW E9x brakes: the 336 mm big-brake setup or the 350 mm M brake (both supported).
- Rear wheel bearing must be the larger BMW E90 45x85x41 unit (BMW 33416775842), with the matching E90 hub (BMW 33416760058).
- Driveshafts must be BMW E90 or E90 M3, or an aftermarket shaft that fits the E90.
- Needs lowering springs or coilovers. Minimum wheel size 17 in. Wisefab quotes the rear track at 30 mm narrower per side than factory.
Highlights
- Revised kinematics for a lowered car rather than just a dropped knuckle: higher roll centre, revised camber gain, anti-squat and bump steer
- Straight tubular top links: camber is set by changing link length
- Bump steer adjustable by moving the rod end in a slot
- Anti-squat adjustable in under 10 minutes at the track via the top forward link height (lower for more, higher for less)
- Original ABS wheel speed sensor can be reused
In the kit
- Pre-set suspension links
- Uprights with hardware
- Subframe bushings with spherical bearings
- Installation guide
