B8 5125 Universal Road Shock - for 11-12" Travel Stem to Eyelet - (Single)

Features:

• Supports 11-12" travel stem to eyelet 
• Monotube gas pressure design
  
• Self-adjusting disc valving
• High-flow piston smooths out bumps
• Precise rebound and compression control
• Designed for large tire performance
• Custom fit based on travel length
• Built for fade-free performance
• Ideal for off-road and overland use
• Engineered for long-term durability

Gain Confidence on Any Trail

If your build calls for more travel and serious control, the Bilstein 33-230399 5125 Series shock delivers the kind of performance you can count on when things get rough. With 11.5 inches of travel, it’s built for custom lifted setups that demand flexibility without giving up handling. Whether you’re crawling over rocks or blasting through washouts, this shock keeps your suspension dialed in with Bilstein’s trusted monotube gas pressure technology. The consistent performance it offers isn’t just about smoother rides, it’s about protecting your rig and maintaining control when the trail starts fighting back. You get that solid, predictable feel even during long days in the backcountry or under a load on uneven ground.

Smooth Response, Rugged Build

What really makes this shock shine is how well it reacts under pressure. Thanks to a self-adjusting deflecting disc valve system, it adapts on the fly to changing surfaces, absorbing impacts without transferring harshness into the cab. The high-flow piston keeps things moving smoothly, while the larger piston area helps fine-tune damping to match your truck’s weight and tire size. It’s especially useful if you’re running oversized tires and need that extra control through corners, over ruts, or coming down from ledges. Plus, with tuning that separates rebound and compression characteristics, the shock handles aggressive terrain changes with precision. Since it’s sold by travel length, you have the flexibility to match it perfectly to your build. It’s a solid choice if you're piecing together a capable off-road setup and want something that won’t let you down when it matters most.

Fits: Universal

Notes:

• Universal shock for custom applications. Verify measurements before ordering.
• Designed for vehicles without a direct Bilstein fitment.
• Confirm your suspension uses a stem upper mount and 5/8 inch eye lower mount.
• Check collapsed and extended lengths before installation.
• Sold individually. Order two for a complete axle replacement.
• Factory valving is non-adjustable.
• Includes standard 5/8 inch hourglass bushings and a black bellows boot.
• No reservoir or spring seat is included.
• Replacement mounting kit is Bilstein part number B4-KT1-Z103A02.
• Made for custom suspension builders and lifted truck applications.
• Fits by shock dimensions, not by vehicle application.
• Covered by Bilstein's 90-day manufacturer warranty against defects.
• Product images may be representative.

Install Instructions