Bilstein 25-294125 B8 8100 DSA Remote Reservoir Shock for 2007-21 Toyota Tundra

Vehicle Fitment

• 2007-2021 Toyota Tundra (Rear, 0-1.5" lift)

Features

• 60 mm large-bore monotube design for high oil volume and control
• Remote or piggyback reservoir for heat management
• Dual Speed Adjustment (DSA) - separate click knobs for low and high-speed compression
• Digressive-valving for responsive damping over varied terrain
• Bilstein's EVO grey finish for durability
• Designed for lifted trucks (0-1.5" rear lift)
• Direct-fit for Tundra - no custom brackets needed
• Limited 2-Year warranty from Bilstein

Specifications

• Collapsed Length: 15.60 in
• Extended Length: 25.12 in
• Internal Design: Monotube
• Lower Mount: Eye (12.4 mm)
• Upper Mount: Stem
• Body Diameter (Outer): 2.65 in (~67 mm)
• Piston Diameter: 60 mm
• Shaft Diameter: 18 mm
• Adjustable Damping: Yes - click adjuster for both low & high-speed compression
• Boot: No

Included Components

• 1x Bilstein B8 8100 reservoir shock (25-294125)
• DSA adjustment knobs (pre-installed)
• Installation instructions and warranty documentation

Product Description

The Bilstein 25-294125 is a high-performance rear shock absorber from the B8 8100 series, designed for lifted Toyota Tundra trucks. With its 60 mm large-bore monotube construction and remote reservoir, it offers superior oil capacity and better heat dissipation, making it ideal for both daily driving and off-road use.

Thanks to Dual Speed Adjustment (DSA), you can fine-tune damping characteristics independently for low-speed and high-speed compression, giving you customizable ride firmness according to your driving conditions. The digressive valving and remote reservoir help maintain control and comfort over rough terrain or when carrying heavy loads.

This is a direct-fit design for the rear of 2007-2021 Tundra models, supporting up to 1.5" of lift. The durable EVO-grey finish adds longevity, and the shock is backed by Bilstein's 2-year warranty. Whether you're leveling your truck or running mild rear lift, this shock provides a reliable, tunable solution.