Lexus says the GS 300 X package adds $10,000 in value and savings for the existing Sport and Sports Luxury variants.
Additional features for the GS 300 X models include a moon roof for the Sport (already standard with the Sports Luxury), along with the GS 460's 18-inch wheels and rear lip spoiler.
The special-edition X pack also adds Lexus' clearance and reversing sonar system and smart key card to the Sport variant, with both already standard on the GS 300 Sports Luxury.
The GS 300 X is available in a range of 10 exterior colours, with 'Starlight Black' the latest addition to the colour palette.
Lexus says Starlight Black contains glass flakes that reflect and refract light, while allowing it to pass through to the base coat.
Strictly a styling and feature pack, the GS 300 X remains unchanged mechanically from the regular model. Power is provided by a 3.0 litre V6 petrol engine, producing 183kW and 310Nm of torque.
The GS 300 X Sports is available from $89,900 drive away. The Sports Luxury edition is priced from $94,900 drive away.