The Bilstein B8 5100 24-324359 is a front ride-height-adjustable shock for second-generation Toyota Tacoma 4WD and 4th-generation 4Runner, plus the Lexus GX470 and FJ Cruiser. The manufacturer describes it as a shock for trucks and SUVs with a front coilover-style suspension. It uses a 46mm monotube body with a digressive piston and a snap-ring grooved body that lets you pick the spring seat position for a lift or level setup while keeping OE coil springs. This is a 2005-2015 Tacoma and 2003-2009 4Runner front shock upgrade, aimed at owners who want a monotube damper instead of a stock unit. The B8 5100 is worth the premium over a bare budget shock because its valving is self-adjusting, with a deflective disc setup rather than a unit you must tune by hand. The manufacturer also backs it with a limited lifetime warranty and a zinc-plated finish for corrosion resistance. Because the lift range depends on the application, confirm the exact figure for your truck before ordering. Installation is a front coilover-style swap, so plan the spring seat height before you bolt the unit in.
The manufacturer lists this part for the front position only, as a coilover-style unit for the front suspension. Rear shocks are not covered by this part number.
The manufacturer's description cites front lift of up to about 3 inches with OE springs, depending on application. Published figures vary slightly by application, so confirm the exact range with the manufacturer before ordering.
The manufacturer lists a limited lifetime warranty on the B8 5100 shock.
This is a front coilover-style swap, so the job centers on removing the factory shock and fitting the Bilstein in its place. The manufacturer notes that the snap-ring grooves in the body allow different spring seat positions, so set the seat height on the bench before installation to match your target ride height. Confirm the 14.2mm eye lower mount and stem upper mount against the shock you are removing. Torque specs and the specific tool list were not confirmed in my research, so use the manufacturer's install instructions and a service manual before you start.
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