B8 Performance Plus is Bilstein's firmer, application-valved damper for cars sitting on aftermarket lowering springs or a factory sport suspension, where a standard damper is working outside the travel it was designed for. The monotube construction separates gas from oil so damping stays consistent as heat builds during hard driving, and the valve settings are chosen per vehicle to tighten body control and steering response without making the ride brittle. Each shock is tested to meet or exceed OE standards and is sold individually, so the rear axle needs two.
Specifications
| Type | B8 Performance Plus monotube shock absorber |
| Position | Rear |
| Intended Use | Lowering spring sets and production sport suspensions |
| Damping | Non-adjustable, vehicle specific ride tuning |
| Quantity | 1, sold individually |
| Warranty | Limited lifetime, non-transferable from the original purchaser |
| Part Number | 24-178525 |
Documents: Installation Instructions (PDF) | Safety Data Sheet (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011-2016 | BMW | 528i | Base |
| 2017 | BMW | 530i | Base |
| 2014-2016 | BMW | 535d | Base |
| 2011-2016 | BMW | 535i | Base |
| 2011-2016 | BMW | 550i | Base |
| 2012-2017 | BMW | 640i | Base |
| 2013-2019 | BMW | 640i Gran Coupe | Base |
| 2012-2017 | BMW | 650i | Base |
| 2013-2019 | BMW | 650i Gran Coupe | Base |
| 2012-2016 | BMW | ActiveHybrid 5 | 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
