Bilstein 7100 Monotube Reservoir Shock Absorber 360/80 12 Inch Travel

The Bilstein M 7100 is a 46mm monotube remote reservoir shock built for custom off-road motorsports and serious recreational builds — not street-oriented daily drivers. This is a purpose-built unit with self-adjusting deflective disc valving that reacts immediately to surface changes and a high-flow piston that keeps harshness in check under hard use.

The specs here are worth noting. This shock runs an eye-to-eye mount with 1/2-inch heims and misalignment spacers at both ends — included in the box. Collapsed length is 19.53 inches, extended length is 31.1 inches, and stroke travel is 11.57 inches. Compression is rated at 800 and rebound at 3600 (both at 52 m/s). The 14mm shaft and nickel-plated, clear powder coat finish are built to take abuse.

What we like about the M 7100 is the owner-rebuildable design. Service components are sold separately, which means this shock can be rebuilt rather than replaced — a real advantage on a motorsports-caliber build where downtime matters. Valve settings and lengths are available across a wide range, so this unit fits into a larger custom suspension program rather than being a one-size solution.

Carries a 90-day warranty. This is a motorsports-segment shock — spec it into a build accordingly.