Dinan's Performance Spring Set replaces the factory coils on the G42 M240i xDrive with two front dual rate springs and two rear linear rate springs, calibrated for a 24% increase in stiffness front and rear. The set lowers the car 7/8 inch (22mm) at both ends for improved suspension geometry and a more aggressive stance, while staying compatible with the factory electronic Adaptive M Suspension. Each spring is CNC wound from high tensile chrome silicon wire and shot-peened for stress relief, then preset to prevent sag, reducing body roll and sharpening steering response. The Ride Quality and Handling Kit is sold separately.
Specifications
| Type | Performance lowering spring set |
| Quantity | Set of 4 (2 front dual rate, 2 rear linear rate) |
| Material | CNC-wound chrome silicon steel wire, shot-peened |
| Spring Rate | +24% front and rear |
| Drop Height | 7/8" (22mm) front and rear |
| Shock Compatibility | Factory electronic Adaptive M Suspension |
| Part Number | D100-0939 |
Documents: Installation Instructions (PDF) | Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2022-2026 | BMW | M240i xDrive | Base |
Shipping
- Orders placed before 3 PM ET typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
