The H&R Street Performance coilover kit for the 2021-2023 BMW M440i Convertible G23 (2WD) pairs custom-valved shocks with progressive-rate springs, and its fully threaded shock body lets the ride height be adjusted for a lower center of gravity and more control.
Each coil over shock is custom valved to work in conjunction with a precision-engineered progressive rate spring, creating a finely tuned suspension system. The fully threaded shock body allows for adjustable vehicle height. This feature helps balance vehicle weight, resulting in a lower center of gravity and improved performance and control.
Listed for 1 vehicle: the fitment table on this page shows each year, make and model it fits.
Part number: 28658-4 (286584)
H&R 21-23 BMW M440i Convertible G23 (2WD) Street Perf. Coil Over
- Canadian company, prices in CAD
- Shipping and duties shown before you pay, no surprises at the door
- Special order, final sale, see policy
Vehicle fitment
Estimated fitment — verify before purchase| Years | Make | Model | Drive |
|---|---|---|---|
| 2021–2023 | BMW | M440i | 2WD |
Specifications
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | H&R |
| Part number | HRS28658-4 |
| Category | Suspension & Lift |
Customer reviews

Worth adding
Useful in any truck — ships separately in its own box.
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