Rear Shock Absorber for 2016-2021 Lexus IS300 & More - KYB 5540004

Keep your ride composed over bumps and dips with the KYB shock absorber, part number 5540004 — a rear, high-pressure monotube gas unit from KYB's Gas-a-just line. It installs as a rear-position OE monotube replacement on many vehicles, among them the 2016-2021 Lexus IS300, 2014-2020 Lexus IS350 and 2016-2017 Lexus IS200t, helping restore designed control and handling; see the "Vehicles it fits" section for the full list.

The Gas-a-just uses two separate working chambers: an air-free hydraulic piston and valve area for responsiveness and control, plus a high-pressure nitrogen gas area with a floating piston that supports a comfortable ride during normal driving and adds performance on demand. Separating the gas and oil gives this monotube fade-free operation and instant response.

• Higher gas pressure: responds quickly to improve steering response, and helps keep electronic safety systems performing as designed.
• Built for hard use: designed for vehicles that work, tow, and run larger, heavier tires and wheels.
• Triple chrome-plated piston rod: since leaking fluid can cause shock failure, the ultra-smooth rod reduces seal wear.

This KYB gas shock absorber is sold individually; replacing both rear shocks together is recommended for balanced ride and handling.

Interchange: 4853080665 · 4853080666 · 4853080675