Parts for your 2021 Lexus Is-Struts

Are struts used on the 2021 Lexus IS?

Short answer: no, the 2021 Lexus IS doesn’t run MacPherson struts. It uses a double wishbone front suspension and a multi-link rear, with separate shock absorbers and coil springs. That layout is confirmed in Lexus’ technical specs for the 2021 IS update and in the Lexus/Toyota service information (GSIC/Repair Manual) that details the suspension architecture for IS 300/IS 350 models of this year. Lexus’ own engineering notes for the 2021 refresh also call out revised, lighter control arms and coil springs, plus new swing-valve shock absorbers and optional Adaptive Variable Suspension (AVS)—all consistent with a non-strut setup.

Why no struts? A strut doubles as both a damper and a structural locating member for the wheel. The IS instead uses upper and lower arms at the front (double wishbone), which gives Lexus more precise control of camber gain and geometry through the corner, and helps deliver that planted, confidence-inspiring front end the IS is known for. It also lets engineers keep a sleek bonnet line and refine ride quality without the packaging compromises that can come with a tall strut tower.

• Front: Double wishbone with separate shock and spring, revised lightweight arms.
• Rear: Multi-link with a separate damper, tuned for better stability and traction.
• Dampers: Swing-valve shocks standard, AVS electronically controlled dampers available on certain grades.

What does that mean for servicing? Owners won’t be replacing “struts” on a 2021 IS—they’ll be looking at shock absorbers, top mounts, control arm bushes and ball joints, sway bar links, and multi-link arm bushes. If the ride’s gone crashy, the car pogo-sticks over bumps, or there’s weeping oil on a damper body, it’s time for fresh shocks. On Aussie and Kiwi roads, a quick suspension check every 20,000–30,000 km is smart, with many shocks due somewhere around 80,000–120,000 km depending on use. Always inspect front lower control arm bushes and ball joints at the same time, worn bushes can mimic a tired damper with steering shimmy and uneven tyre wear. If the car has AVS, scan for codes and confirm the electronic actuators are communicating before calling a damper faulty.

Bottom line: the 2021 Lexus IS doesn’t use struts. It’s a more sophisticated arm-and-damper arrangement aimed at sharper turn-in, better tyre contact, and a smoother ride—just make sure shocks, bushes, and links get checked and replaced in pairs across an axle for the best result.

Does the 2021 Lexus IS have struts or shocks?

It has shocks, not MacPherson struts. The front is double wishbone and the rear is multi-link, so the dampers don’t act as structural members. People sometimes call any front damper a “strut”, but on this car they’re standalone shock absorbers.

What should be replaced instead of struts on a 2021 IS when the ride gets rough?

Start with the shock absorbers and top mounts, then assess front lower control arm bushes/ball joints, sway bar links, and rear multi-link arm bushes. If equipped with AVS, confirm the electronic control and actuators are healthy before replacing dampers.

How often should the shocks be checked on a 2021 Lexus IS?

A quick inspection every 20,000–30,000 km is a good rule of thumb. Many drivers see replacement needs around 80,000–120,000 km depending on road conditions and load. Always check for oil seepage, uneven tyre wear, clunks over bumps, and longer stopping distances.