E46 xDrive rear shock absorber Bilstein B8 24-068666 for 325xi, 330xi, 330xd, ALPINA B3

The Bilstein B8 rear shock (24-068666) is the monotube gas-pressure damper enthusiasts fit to E46 xDrive chassis - specifically 325xi, 330xi, 330xd Saloon/Touring/Coupe and ALPINA B3 - when they want fast-road compliance without sacrificing track-day control.

• Chassis-specific: Designed for E46 xDrive geometry - not a generic 'BMW' part. Fits all E46 xi/xd variants with standard or mildly lowered suspension (up to ~35mm drop).
• Stage 1 & stage 2 ready: Works seamlessly with Eibach Pro-Kit, H&R OE Sport, or similar lowering springs; no revalving needed for fast-road or track-day use.
• Not an OEM replacement: It’s a performance damper - stiffer rebound, progressive damping curve, monotube design for consistent response under repeated load.
• Search terms this actually matches: E46 rear shock, 330xi rear damper, 325xi B8, ALPINA B3 E46 rear shock, E46 xDrive decat + coilover-ready setup, fast-road E46 rear, track-day E46 rear damper.