King Coilovers: Series, Specs, and Truck Fitment

King builds its coilovers in three body diameters, and sells the same hardware both as raced-proven Performance Race Series shocks and as application-specific OEM Performance bolt-on kits for stock trucks and SUVs.

See the full coilover brand directory for how these sizes stack up against other off-road and street coilover lines.

Most owners searching for a King coilover for a specific truck end up looking at the 2.5 OEM Performance kit: it is the size King uses across its Tacoma, 4Runner, F-150, and Tundra bolt-on applications, and it is built as a complete shock-and-spring unit with factory-tuned spring rates rather than sold as a bare "king coilover springs" kit. The 2.0 size is King's entry point for lighter Jeeps, buggies, and trucks that stay mostly on-road or on mild trails. The 3.0 size is overkill for a daily-driven overland build; King positions it for dedicated desert racing and pre-running rigs that need the extra oil capacity to resist fade at sustained high speed.

None of these are street-lowering coilovers. Every King OEM Performance kit is built to set or raise ride height and add wheel travel on a truck or SUV, not drop it.

King's OEM Performance kits for Tacoma, 4Runner, F-150, and Tundra compete most directly with Fox's and Bilstein's bolt-on coilover upgrades for the same platforms, and with Viking's truck coilover line. All of them sell a shock-and-spring unit that bolts into the factory strut location so an owner can set ride height without cutting or clocking anything. The practical difference is reservoir setup: King's OEM Performance 2.5 ships with an external reservoir on most applications, and an optional 20-click compression adjuster, features that are not standard across every competing kit in this price range.

For the torsion-bar and coil-spring front ends on Super Duty trucks, King's approach differs again: see the conversion-kit section below before cross-shopping a direct bolt-on coilover against a King F-250/F-350 kit.

Tacoma, 4Runner, F-150, and Tundra already run a strut-style front shock from the factory, so King's 2.5 OEM Performance coilover is a direct bolt-on replacement at stock ride height. Ford's F-250/F-350/F-450/F-550 Super Duty trucks use a separate front coil spring and shock, so King sells those as a "coilover conversion" kit that replaces both pieces together, with separate part numbers sized for stock ride height, 1-2.5" lifts, 4-6" lifts, and 6-8" lifts.

Checking which category your truck falls into before ordering avoids buying the wrong King kit, since the conversion kits and the direct bolt-on kits are not interchangeable parts.

Installation follows the same basic steps as any coilover install: unbolt the factory strut or coil-spring assembly, bolt in the King unit, and reconnect the sway bar end links and brake lines. OEM Performance kits with an external reservoir need extra room to route and mount the reservoir hose, which is tighter on some applications than others.

Ride height is set by threading the spring perch up or down on the shock body before final torque, covered in general in how to adjust coilovers; a coilover spanner wrench makes turning that collar much easier than pliers. On kits with the optional compression adjuster, the damping knob on the reservoir is a separate control from ride height and does not need to be touched to change how high the truck sits.