Bilstein 25-284591 | Bilstein Shock Absorber
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Bilstein 25-284591 | B8 8100 (Bypass) | Shock Absorber

SKU 25-284591
$979.00 Free Ship!
 
Typically ships in 2-3 weeks.

Bilstein B8 8100 (Bypass) is a direct fit, position sensitive, damper for light trucks and SUV's. These motorsports inspired shock absorbers utilize a dual tube externally adjustable bypass design. B8 8100 (Bypass) feature “Incremental Flow” bypass adjusters, allowing for finite and incremental changes for rebound and compression. The shocks utilize a bottom hose, remote reservoir exit port, delivering increased compression control during the full cycle.

Product Specs for Bilstein 25-284591

  • Instructions:Installation Instructions
  • SeriesB8 8100 (Bypass)
  • Warranty:Bilstein Warranty
  • UPC: 651860845913
  • MPN: 25-284591
  • Body Design: Bypass Body (Non-Coilover)
  • Body Diameter (ID): 60mm
  • Boot Included: No
  • California Proposition 65: WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov
  • Collapsed Length (IN): 14.72
  • Collapsed Length (MM): 374.0
  • Extended Length (IN): 24.09
  • Extended Length (MM): 612.0
  • Finish: Zinc Plated
  • Internal Design: Monotube
  • Lower Mount Type: Eye 19.3mm
  • Reservoir: Yes
  • Series: B8 8100 (Bypass)
  • Upper Mount Type: Stem
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Bilstein 25-284591 Details

Bilstein B8 - 8100 Bypass Shocks

The Bilstein B8 8100 Bypass shocks are a direct fit, position sensitive, damper for light trucks and SUV’s. These motorsports inspired shock absorbers utilize a dual tube externally adjustable bypass design. Bypass shock absorbers offer an excellent ride in all conditions and provide maximum bottoming out control when the road gets rough. Utilizing an adjustable external bypass shock is the easiest and most effective way to tune your suspension for ultimate performance.

Features & Benefits:
  • Dual tube external bypass offers position sensitive damping with independent adjustment for rebound and compression.
  • Incremental flow adjuster offers finite and incremental changes in damping force for precise adjustments.
  • Vehicle specific tuning with the ability to make a wide range of adjustments.
  • 60 mm large bore hard anodized aluminum piston offers a greater range of damping control and delivers exceptional long-term durability.
  • Bottom port reservoir hose provides increased bottom out control during the compression cycle.
  • 60 mm remote reservoir with machined aluminum chassis mounts.
  • 18 mm piston rod provides brute tensile strength and reduces internal gas force ramp-up providing a smoother ride.
  • Billet rod end with vulcanized mounts for an exact OE fit and long-term durability.
  • Direct fit for easy installation.
  • Owner rebuildable.
Bump Zone

The Bump Zone, located above the compression bypass tube, increases bottoming control and eliminates the need for a hydraulic bump stop.

Bilstein B8 8100

Vehicle Application Guide for Bilstein 25-284591

The 25-284591 Bilstein 25-284591 | B8 8100 (Bypass) | Shock Absorber is engineered to work with specific vehicles displayed below. Can't find your vehicle, or need assistance, please give us a call at 1-800-358-4751 or 1-989-755-0561. Browse the category Bilstein Shocks to view all vehicle makes and models.

  • Lexus
  • Toyota
YearMakeModelVehicle OptionInstallation Notes
2003 Toyota 4Runner LimitedFits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
Without X-REAS Suspension
2003 Toyota 4Runner LimitedFits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
Without X-REAS Suspension
2003 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
2003 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
2004 Toyota 4Runner LimitedFits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
Without X-REAS Suspension
2004 Toyota 4Runner LimitedFits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
Without X-REAS Suspension
2004 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
2004 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
2006 Toyota 4Runner LimitedFits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
Without X-REAS Suspension
2006 Toyota 4Runner LimitedFits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
Without X-REAS Suspension
2006 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
2006 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
2007 Toyota 4Runner LimitedFits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
Without X-REAS Suspension
2007 Toyota 4Runner LimitedFits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
Without X-REAS Suspension
2007 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
2007 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
2005 Toyota 4Runner LimitedFits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
Without X-REAS Suspension
2005 Toyota 4Runner LimitedFits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
Without X-REAS Suspension
2005 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
2005 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
2008 Toyota 4Runner LimitedFits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
Without X-REAS Suspension
2008 Toyota 4Runner LimitedFits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
Without X-REAS Suspension
2008 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
2008 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
2009 Toyota 4Runner LimitedFits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
Without X-REAS Suspension
2009 Toyota 4Runner LimitedFits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
Without X-REAS Suspension
2009 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0.9-2.3"
2009 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 1.7-2.5"
2010 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2010 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2010 Toyota 4Runner Trail
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2011 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2011 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2011 Toyota 4Runner Trail
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2012 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2012 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2012 Toyota 4Runner Trail
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2014 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2014 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2014 Toyota 4Runner Trail
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2015 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2015 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2015 Toyota 4Runner Trail
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2015 Toyota 4Runner TRD Pro
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2018 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2018 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2018 Toyota 4Runner SR5 PremiumFits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2018 Toyota 4Runner SR5 PremiumFits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2018 Toyota 4Runner TRD Pro
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2018 Toyota 4Runner TRD Off-Road
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2018 Toyota 4Runner TRD Off-Road Premium
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2019 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2019 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2019 Toyota 4Runner SR5 PremiumFits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2019 Toyota 4Runner SR5 PremiumFits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2019 Toyota 4Runner TRD Pro
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2019 Toyota 4Runner TRD Off-Road
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2019 Toyota 4Runner TRD Off-Road Premium
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2013 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2013 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2013 Toyota 4Runner Trail
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2016 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2016 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2016 Toyota 4Runner Trail
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2016 Toyota 4Runner TRD Pro
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2020 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2020 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2020 Toyota 4Runner SR5 PremiumFits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2020 Toyota 4Runner SR5 PremiumFits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2020 Toyota 4Runner TRD Pro
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2020 Toyota 4Runner TRD Off-Road
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2020 Toyota 4Runner TRD Off-Road Premium
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2020 Toyota 4Runner Venture
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2017 Toyota 4Runner SR5Fits 4 Wheel Drive
Position: Rear Right
Drive Type: 4WD
For Rear Lifted Height: 0-1.5"
2017 Toyota 4Runner SR5Fits Rear Wheel Drive
Position: Rear Right
Drive Type: RWD
For Rear Lifted Height: 0.9-2"
2017 Toyota 4Runner TRD Pro
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2017 Toyota 4Runner TRD Off-Road
Position: Rear Right
For Rear Lifted Height: 0-1.5"
2003 Lexus GX470 Base
Position: Rear Right
For Rear Lifted Height: 0-1.5"
Without Kinetic Dynamic Suspension System (KDSS)
Requires Rear Coil Spring Conversion
2009 Lexus GX470 Base
Position: Rear Right
For Rear Lifted Height: 0-1.5"
Without Kinetic Dynamic Suspension System (KDSS)
Requires Rear Coil Spring Conversion
2006 Lexus GX470 Base
Position: Rear Right
For Rear Lifted Height: 0-1.5"
Without Kinetic Dynamic Suspension System (KDSS)
Requires Rear Coil Spring Conversion
2007 Lexus GX470 Base
Position: Rear Right
For Rear Lifted Height: 0-1.5"
Without Kinetic Dynamic Suspension System (KDSS)
Requires Rear Coil Spring Conversion
2008 Lexus GX470 Base
Position: Rear Right
For Rear Lifted Height: 0-1.5"
Without Kinetic Dynamic Suspension System (KDSS)
Requires Rear Coil Spring Conversion
2005 Lexus GX470 Base
Position: Rear Right
For Rear Lifted Height: 0-1.5"
Without Kinetic Dynamic Suspension System (KDSS)
Requires Rear Coil Spring Conversion
2004 Lexus GX470 Base
Position: Rear Right
For Rear Lifted Height: 0-1.5"
Without Kinetic Dynamic Suspension System (KDSS)
Requires Rear Coil Spring Conversion
2010 Lexus GX460 Base
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2011 Lexus GX460 Base
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2019 Lexus GX460 Base
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2019 Lexus GX460 Premium
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2015 Lexus GX460 Base
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2015 Lexus GX460 Premium
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2016 Lexus GX460 Base
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2016 Lexus GX460 Premium
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2013 Lexus GX460 Base
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2012 Lexus GX460 Base
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2018 Lexus GX460 Base
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2018 Lexus GX460 Premium
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2020 Lexus GX460 Base
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2020 Lexus GX460 Premium
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2017 Lexus GX460 Base
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2017 Lexus GX460 Premium
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2014 Lexus GX460 Base
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"
2014 Lexus GX460 Premium
Position: Rear Right
For Rear Lifted Height: 0.5-1.5"

Customer Q&A - Bilstein 25-284591

Ask A Question

Bilstein

Proven design technology, a superior manufacturing process and a commitment to quality control characterize the Bilstein shock absorber production process. At Bilstein over 40% of the production personnel are involved with quality control to maintain their industry-leading level of shock absorber efficiency and long life performance.

In this pursuit of excellence, Bilstein has received worldwide acclaim for quality shock absorbers that have set new industry standards. Setting high standards has always been a top priority with Bilstein and a consistent set of parameters and performance guidelines go into the development of each Bilstein shock application.

For more information on Bilstein shock absorbers and struts, or call us at 1-800-358-4751.

Bilstein Warranty

If a shock/strut malfunctions and BILSTEIN determines it to be defective, Bilstein will either replace it or repair it, depending on the term of the warranty based on the assembly's model type.


2 Year Limited Warranty - On B4 OE Replacement (Air) / Steering Racks.

Lifetime Limited Warranty - On gas pressure shock absorbers and struts for as long as you, the original purchaser, own your car. This covers B4 OE Replacement, B6 and B6 Performance, B8 Performance Plus, B12 Series, B14, B16, B6 4600, B8 5100, B8 5100 (Ride Height Adjustable), B8 5112, and B8 6112.

90 Day Limited Warranty - On B8 5125, B8 5150, B8 5160, B8 5165, M 7100 Series, B8 8125, M 9100 Series, M 9300 Series, BILSTEIN Club sport series.

What the warranty does not cover

Original equipment shock absorbers: if your vehicle was equipped with BILSTEIN from the factory (original equipment) warranty claims must be directed to the vehicle manufacturer.*

Improper installation, racing, driving competition or off-road use, modified use or applications other than Bilstein recommended vehicles, commercial vehicles, bent or broken rods showing abuse or abnormal wear, surface finish, boot or mounting hardware, rubber bushings are not covered.

Labor charges are not covered by any of the foregoing limited warranties.

You can view the full details of Bilstein’s warranty here.

How to get service

If a Bilstein product fails as a result of a manufacturer defect, contact us at Michigan Truck Spring for support. You can contact us by phone at 1-800-358-4751 or by using our contact form.

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