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28mm length
Helper Springs are used in the rear to maintain proper suspension operation under droop conditions
Less brake fade during heavy use
The Dinan rear Anti-roll bar is 118% stiffer than the stock 13mm rear bar (please see listing below for full breakdown of Dinan rear anti-roll stiffness ratings)
Drivers wanted the visceral feel of being connected to the road as the road-racing heritage of BMW M demanded
Dinan Supplemental Ride Quality & Handling Kit - 2020-2025 Toyota GR Supra A90 / A91 BMW X4 M F98 28mm lengthInstallation labor time is 7. 9 hrs (includes alignment) if the supplemental ride quality & handling kit is installed by itself. Installation labor time will be negligible if installed at the same time as the corresponding Dinan Spring Set. A90 A91 To fully enjoy Dinan performance spring sets we highly recommend pairing them up with our supplemental ride quality and handling kits. This additional kit includes tuned, progressive rate bump stops that