2021–2026 Lexus IS GTS Rear Diffuser

Give Your Lexus IS a Sharper Rear Profile

Upgrade your Lexus IS300 or IS350 F SPORT with the AeroFlowDynamics Rear Diffuser. Add a more aggressive finish to the lower rear bumper and give your exterior build a cleaner, more complete look.

F SPORT rear bumper required. Does not fit non-F SPORT rear bumpers or the Lexus IS500.

Key Features

• Aggressive rear styling: Adds definition to the lower bumper for a sportier appearance.

• F SPORT bumper fitment: Designed for the compatible IS300 and IS350 applications below.

• Complete-build styling: Complements front lips, side skirt extensions, and trunk spoilers.

Vehicle Fitment

U.S.-market applications:

The 2021–2026 range covers the combined product application. The U.S. 2026 IS lineup is IS350 only.

For other markets, confirm your model year and factory F SPORT rear bumper before ordering.

Does not fit:

• Non-F SPORT rear bumpers

• Lexus IS500

• 2020 and earlier Lexus IS models

Before Installation

Test-fit the diffuser and check alignment and exhaust clearance before securing it. Professional installation is recommended for proper positioning.

Complete Your Lexus IS Build

Pair your diffuser with the AFD Lexus IS GTS Side Skirt Extensions to carry the styling along the sides of your car.

Upgrade your Lexus IS F SPORT rear profile with AeroFlowDynamics.