Bilstein B8 8100 Bypass Rear Right Shock Absorber 25-284591 for Toyota 4Runner and Lexus GX460

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. The remote reservoir is supplied with a bolt-on aluminum anodized chassis mount for an easy fitment. BILSTEIN B8 8100 (Bypass) will maximize the driver experience, offering unparalleled ride comfort and incredible bottom out control. 60mm Shock Absorber

• 60mm large bore hard anodized aluminum piston offers a greater range of damping control and delivers exceptional long-term durability
• 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

Upgrade the rear right suspension of your Toyota 4Runner or Lexus GX460 with the Bilstein B8 8100 Bypass Shock Absorber, Part Number 25-284591. Designed as a direct-fit, position-sensitive damper for light trucks and SUVs, this motorsports-inspired shock delivers controlled suspension performance without sacrificing ride comfort. It is engineered for select Toyota 4Runner applications from 2003 through 2020, along with select Lexus GX460 models, and is intended for the rear right position.
The B8 8100 uses a dual-tube externally adjustable bypass design with independent rebound and compression tuning. Its Incremental Flow bypass adjusters allow precise, finite changes to damping force, helping drivers tailor suspension behavior for changing terrain, vehicle loads, and driving conditions. The bottom hose and remote reservoir exit port improve compression control throughout the shock's operating cycle, supporting predictable handling and enhanced resistance to harsh bottoming.
A large-bore, hard-anodized aluminum piston provides a broad range of damping control and long-term durability. The remote reservoir includes a bolt-on anodized aluminum chassis mount for practical installation and secure positioning. Together, these features help the Bilstein B8 8100 manage suspension movement, improve chassis control, and provide a more composed driving experience on and off the road.

• Rear right shock absorber for select Toyota 4Runner and Lexus GX460 applications
• Professional installation and vehicle-specific fitment verification are recommended before ordering
• This product may contain chemicals known to the State of California to cause cancer or reproductive harm

Features:

• Dual-tube externally adjustable bypass design provides position-sensitive damping with separate rebound and compression adjustment

• Incremental Flow bypass adjusters enable precise, finite changes in damping force

• Large-bore hard-anodized aluminum piston supports broad damping control and lasting durability

• Bottom hose and remote reservoir exit port improve compression control throughout the shock cycle

• Bolt-on anodized aluminum chassis mount supports secure remote reservoir installation

Compatible With
2003 Lexus GX470
2003 Toyota 4Runner
2004 Lexus GX470
2004 Toyota 4Runner
2005 Lexus GX470
2005 Toyota 4Runner
2006 Lexus GX470
2006 Toyota 4Runner
2007 Lexus GX470
2007 Toyota 4Runner
2008 Lexus GX470
2008 Toyota 4Runner
2009 Lexus GX470
2009 Toyota 4Runner
2010 Lexus GX460
2010 Toyota 4Runner
2011 Lexus GX460
2011 Toyota 4Runner
2012 Lexus GX460
2012 Toyota 4Runner
2013 Lexus GX460
2013 Toyota 4Runner
2014 Lexus GX460
2014 Toyota 4Runner
2015 Lexus GX460
2015 Toyota 4Runner
2016 Lexus GX460
2016 Toyota 4Runner
2017 Lexus GX460
2017 Toyota 4Runner
2018 Lexus GX460
2018 Toyota 4Runner
2019 Lexus GX460
2019 Toyota 4Runner
2020 Lexus GX460
2020 Toyota 4Runner
2021 Lexus GX460
2021 Toyota 4Runner
2022 Lexus GX460
2022 Toyota 4Runner
2023 Lexus GX460
2023 Toyota 4Runner