Bilstein 25-288155 B8 8100 Bypass Rear Left Shock 2007-2014 Toyota FJ Cruiser4WD

Vehicle Fitment

• 2007-2014 Toyota FJ Cruiser Base (4WD, 4.0L V6, 0-2" Rear Lift)
• 2007 Toyota FJ Cruiser TRD Special Edition (4WD, 4.0L V6, 0-2" Rear Lift)
• 2008 Toyota FJ Cruiser Trail Teams Special Edition (4WD, 4.0L V6, 0-2" Rear Lift)

Fitment Notes

• Position: Rear Left (Driver Side) - sold individually. A matching rear right bypass shock (25-288162) is required for a complete rear axle installation.
• Fits vehicles at factory ride height or with up to 2" of rear lift.
• All Toyota FJ Cruiser models sold in the US (2007-2014) are 4WD - this shock fits the full model run.
• Remote reservoir chassis mount is included - uses a bolt-on aluminum anodized bracket for a clean, no-fabrication installation.

Features

• Bilstein B8 8100 (Bypass) series - motorsport-derived dual-tube externally adjustable bypass design purpose-built for serious off-road performance on light trucks and SUVs.
• "Incremental Flow" bypass adjusters allow finite, independent tuning of both rebound and compression damping, enabling precise suspension setup for any terrain, trail condition, or load.
• Position-sensitive damping: bypass ports are strategically placed along the shock body to deliver softer damping in mid-stroke for maximum wheel travel and compliance, automatically stiffening near full compression for outstanding bottom-out control.
• Bottom-port remote reservoir hose exit delivers increased compression control during the full suspension cycle, while the external reservoir provides dramatically improved heat dissipation for sustained fade-free performance on long off-road runs.
• 60mm large-bore hard-anodized aluminum piston offers a greater range of damping control and exceptional long-term durability under heavy off-road abuse.
• 18mm piston rod provides maximum tensile strength and reduces internal gas force ramp-up for a smoother, more predictable ride feel.
• Billet rod end with vulcanized mounts ensures an exact OE-quality bolt-in fit and long-term vibration resistance.
• Made in the USA and German TUV-certified for quality and performance.

Specifications

• Series: B8 8100 (Bypass)
• Position: Rear Left (Driver Side)
• Rear Lift Compatibility: 0-2"
• Drivetrain: 4WD
• Internal Design: Dual-Tube Bypass (Externally Adjustable)
• Piston Diameter: 60mm
• Piston Rod Diameter: 18mm
• Collapsed Length: 14.72 in.
• Extended Length: 24.09 in.
• Upper Mount Type: Stem
• Lower Mount Type: Eye 19.25mm
• Reservoir: Yes (Remote, with bolt-on aluminum anodized chassis mount)
• Adjustability: Dual - Independent Rebound and Compression
• Boot Included: No
• Spring Seat Included: No
• Origin: Made in USA, TUV-Certified
• Quantity Sold: Individually (1x per listing)
• Warranty: 2-Year Limited Bilstein Warranty

Included Components

• 1x Bilstein B8 8100 (Bypass) Rear Left Shock Absorber (25-288155)
• 1x Bolt-On Aluminum Anodized Reservoir Chassis Mount
• Hardware: Necessary washers, bushings, and nuts

Product Description

The Bilstein 25-288155 is a B8 8100 (Bypass) rear left shock absorber engineered specifically for the 2007-2014 Toyota FJ Cruiser 4WD across all trims, supporting factory ride height and up to 2" of rear lift. This is a motorsport-derived, externally adjustable bypass damper - not a traditional monotube or twin-tube shock - bringing race-level tunability to a direct-fit bolt-on package. The dual-tube bypass design with Incremental Flow adjusters allows for independent tuning of rebound and compression damping, enabling drivers to precisely configure their suspension for the trail ahead. Position-sensitive bypass ports are calibrated to provide compliant, supple damping through mid-stroke for better wheel articulation and trail feel, while automatically delivering firm bottom-out control as the suspension approaches full compression - the same behavior found in purpose-built desert race vehicles.

The remote reservoir increases oil volume capacity and heat dissipation far beyond what a traditional shock can manage, preventing damping fade on sustained off-road runs. The included bolt-on aluminum anodized chassis mount keeps the reservoir installation clean and professional without requiring custom fabrication. Sold individually as the rear left (driver side); the matching rear right bypass shock is 25-288162. Made in the USA, TUV-certified, and backed by Bilstein's 2-Year Limited Warranty.