The Lexus GX 550 uses a 3.4L twin-turbo V6 rated at 349 horsepower and 479 lb-ft of torque, paired with a 10-speed Direct Shift Automatic transmission. Full-time four-wheel drive and a Torsen limited-slip locking center differential are standard on every GX.

Lexus notes that the V6 exceeds the 301 horsepower of the previous generation V8. The GX 550 shares the GA-F platform introduced on the current LX 600.

The main engine bolt-ons we carry for the Lexus GX 550 are aFe intake parts: the Momentum GT cold air intake, turbo inlet pipes, and a MagnumFLOW air filter. We do not publish horsepower claims for these parts.

The twin-turbo V6 makes 349 horsepower and 479 lb-ft from the factory, so for many trail builds, suspension, armor and wheels and tires are a bigger change than engine parts. Any calibration requirements for a specific part are listed on its product page, and you can contact us with questions.

Under the Magnuson-Moss Warranty Act, a dealer cannot void an entire factory warranty simply because aftermarket parts are installed. A specific claim can still be denied if a modification is determined to have caused the failure, and ECU changes are detectable. Warranty decisions are made by Toyota and its dealers, not by LIMIT+1.

Yes. Tell us your vehicle, your goals, and what is already installed, and we will put together a parts list that works as a system instead of a pile of individual upgrades. Order matters as much as part selection, and sequencing a build correctly avoids buying the same part twice. Contact us before you order if you want a second opinion on a plan.