Bilstein B8 5100 Rear Shock

2018–2026 Jeep Gladiator

Part #: 33-305288

Overview

The Bilstein B8 5100 Rear Shock is engineered specifically for Jeep Gladiator models from 2018 through 2026 equipped with a 1.5 to 2.5-inch rear lift. Designed as a direct-fit replacement, this shock absorber enhances the vehicle’s suspension performance, delivering improved ride quality, handling, and comfort on and off-road. Ideal for Gladiator owners who have lifted their trucks and demand consistent, fade-free damping, the B8 5100 provides a reliable upgrade that maintains factory ride height characteristics while accommodating suspension modifications.

Built to meet the rigorous demands of lifted trucks and SUVs, the B8 5100 rear shock is a trusted choice for enthusiasts seeking enhanced control without sacrificing daily drivability. Its monotube design and application-specific tuning ensure optimal performance tailored to the Gladiator’s unique suspension geometry and weight distribution.

Key Features

The Bilstein B8 5100 Rear Shock incorporates advanced technology and design elements to deliver superior suspension performance:

• Monotube shock design for consistent, fade-free damping under all conditions
• Velocity-sensitive, digressive piston that adapts to changing road surfaces for improved control
• Application-specific tuning to optimize ride quality and handling for lifted Jeep Gladiators
• Zinc-plated finish for enhanced corrosion resistance and durability
• Non-adjustable damping calibrated for rear suspension with 1.5 to 2.5-inch lift
• Smooth body design (non-coilover) with a 46mm body diameter for robust construction
• Direct bolt-on fitment requiring no modifications for easy installation
• Limited lifetime warranty providing long-term peace of mind

Construction & Design

The Bilstein B8 5100 Rear Shock features a high-strength monotube construction that allows for superior heat dissipation and consistent damping performance. The smooth body design ensures compatibility with lifted suspension setups without interference. The shock’s internal digressive piston is velocity sensitive, meaning it adjusts damping force dynamically based on road conditions, providing a balanced ride that is both comfortable and controlled.

Finished with a durable zinc plating, the shock resists corrosion and wear, extending its service life even in harsh environments. The 46mm body diameter offers a sturdy platform capable of handling the increased stresses associated with lifted Jeep Gladiators, ensuring reliable performance on rugged terrain and daily driving alike.

Installation & Fitment

The Bilstein B8 5100 Rear Shock is designed as a direct replacement for the rear shocks on 2018–2026 Jeep Gladiator models with a 1.5 to 2.5-inch rear lift. Installation is straightforward and requires no special modifications or additional components. It is recommended to replace both rear shocks simultaneously to maintain balanced suspension performance. The shock’s length specifications—17.91 inches collapsed and 28.41 inches extended—are engineered to accommodate lifted suspension geometry while preserving proper ride height and articulation.

What's Included

• Two Bilstein B8 5100 Rear Shock Absorbers (for both rear sides)
• Limited lifetime warranty documentation

Ideal For

This shock absorber is ideal for Jeep Gladiator owners who have installed a 1.5 to 2.5-inch rear lift and seek to enhance their vehicle’s suspension performance. It suits off-road enthusiasts, daily drivers, and anyone looking to improve ride comfort, handling, and durability without compromising the factory suspension characteristics. The B8 5100 is perfect for those who demand reliable, fade-free damping on a lifted Gladiator, whether tackling rugged trails or cruising on pavement.

Bilstein is a cornerstone name in performance suspension, known for high-quality dampers and suspension systems tuned for everything from street handling to aggressive off-road use. With dedicated Street Performance offerings and motorsport-inspired development, Bilstein shocks and coilovers are built to deliver consistent control, better ride quality, and confidence when you’re pushing the pace—on-road or off.