Bilstein B8 5125 Shock Absorber, Eye/Stem, 14.23 Collapsed, Zinc Plated Monotube

The Bilstein B8 5125 is built specifically for custom suspension applications where a direct Bilstein fitment doesn't exist. This is the shock custom builders reach for when they're engineering something outside the catalog — a reliable, high gas pressure monotube in a stem-to-eye configuration with a 46mm piston and self-adjusting deflective disc valving.

The specs here are worth knowing. Collapsed length comes in at 14.32 inches with a 22.91-inch extended length, giving you 8.59 inches of stroke travel. Compression is rated at 755 at 52 m/s, rebound at 3,775 at 52 m/s. The 14mm shaft and 5/8-inch hourglass bushing are industry-standard sizing, which makes integration into custom setups straightforward. Zinc plated finish. Ships with a black bellows boot included. No reservoir.

We recommend this shock to builders who are sourcing components for a custom lift or one-off suspension design and need a monotube unit with known, documented valve rates. The B8 5125 series gives you consistent, fade-free damping without the guesswork of off-spec sourcing. It carries a limited 90-day warranty. If you're building to spec, this is a legitimate Bilstein solution for applications where the standard fitment catalog ends.