The KW Variant 1 (V1) INOX-LINE coilover kit is a complete height-adjustable suspension system for the 2001-2006 BMW M3 (E46), developed specifically for this chassis on the Nurburgring Nordschleife and KW 7-post rig. Damping is fixed, with vehicle-specific spring rates and a factory-tuned setup that balances street comfort with sporty handling. Ride height is adjustable across an approved lowering range of roughly 0.8-1.5 in. (20-40 mm) front and rear via the threaded INOX-LINE stainless-steel strut housings, which resist corrosion for the life of the kit. Each kit is hand-built and serialized in Fichtenberg, Germany, and every damper is dyno-tested before shipping.
Specifications
| Type | Variant 1 (V1) coilover kit, fixed damping |
| Adjustability | Height adjustable; damping non-adjustable (pre-configured) |
| Lowering Range | Approx. 0.8-1.5 in. (20-40 mm) front & rear |
| Construction | INOX-LINE stainless-steel strut housings, composite spring perches |
| Contents | Complete 4-corner coilover kit (struts, springs, bump stops) |
| Part Number | 10220023 |
| Warranty | Limited lifetime, unlimited mileage |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2006 | BMW | M3 | 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
