Bilstein B8 5125 Shock Absorber 17.11" Collapsed, Eye/Stem, Zinc Plated

The Bilstein B8 5125 is built specifically for custom suspension applications where a direct Bilstein fitment doesn't exist. This is the shock to reach for when you're building a custom lift setup and need a quality monotube unit you can spec to your exact requirements — sold by length and valve rate so you can match it to your build.

The core specs tell the story: 46mm monotube construction with self-adjusting deflective disc valving, a 14mm shaft, and a 46mm piston. This unit runs a stem-to-eye mount configuration with a standard 5/8-inch hourglass bushing at the eye end. Collapsed length is 17.11 inches, extended length is 28.35 inches, and stroke travel is 11.25 inches. Compression is rated at 620 and rebound at 2495 (both at 52 m/s). The zinc plated finish and included black bellows boot are practical touches for long-term durability.

We stock this shock because it gives custom builders a genuine Bilstein monotube option when vehicle-specific applications aren't available. High gas pressure, no reservoir, smooth body — it's straightforward hardware that does what monotube shocks are supposed to do without unnecessary complexity. Comes with a limited 90-day warranty.