Bilstein B8 5125 (5100 Series) Rear 46mm Monotube Shock Absorber for Select Chevrolet & GMC 1969-1991

Fits select 1969-1991 Chevrolet and GMC K-Series trucks and SUVs, including K10, K20, K30, Blazer, Jimmy, and Suburban models.

The Bilstein B8 5125 shock absorber is a high-performance 46mm monotube gas pressure shock designed for custom applications and lifted vehicles. These shocks provide consistent, fade-free performance by utilizing a large-diameter piston and a nitrogen-charged monotube design that dissipates heat more effectively than traditional twin-tube shocks. Equipped with Bilstein’s patented digressive valving, the self-adjusting deflective disc system reacts instantly to changing surface conditions, delivering superior control on technical terrain while maintaining a smooth ride on the pavement.

Built for durability and ease of installation, the B8 5125 series features industry-standard 5/8-inch hourglass bushings and is tuned specifically for the demands of heavy-duty 4WD applications. Whether you are restoring a classic K10 or building a custom off-road rig, these shocks offer the reliability and damping precision required for rugged use.

• Manufacturer Part Number: 33-185569
• 46mm monotube design for consistent, fade-free performance
• Patented digressive valving for immediate reaction to terrain changes
• High-pressure nitrogen gas charged construction
• Self-adjusting deflective disc valving
• Includes industry-standard 5/8 inch hourglass bushings
• Zinc-plated finish for corrosion resistance
• Made in the USA