Does a lift kit void a Subaru or Toyota factory warranty

Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your entire factory warranty because you fitted an aftermarket part. To deny a specific claim, they have to show that the modification caused the specific failure. A blanket refusal at the service counter is not how the law works.

The fear that a lift kit voids your factory warranty keeps more owners on stock suspension than any other worry, and most of what circulates comes from a service advisor's offhand comment repeated three forums deep. The US legal position is clearer than the folklore suggests. We build lift kits for people who intend to keep their factory coverage, so here is how it works and what to have on file before the wrenches come out. We are a suspension company rather than a law firm, so treat this as a practical guide to a federal statute.

What the Magnuson-Moss Warranty Act actually says

The Magnuson-Moss Warranty Act is federal law covering consumer product warranties, and it is the reason your coverage survives a modification. Two parts of it matter to you.

The first is that a manufacturer cannot condition your warranty on the use of its own branded parts or services unless those parts are free. That is why a dealer cannot tell you that fitting anything other than a Subaru or Toyota part terminates your coverage.

The second is the burden of proof. If a manufacturer wants to deny a claim because your modification caused a failure, it has to establish that causal link. The burden sits with them, not with you, and a dealer declining a claim on sight of a lift kit has not met that standard.

So a lift kit does not void your warranty. It creates a narrow category of claims where causation becomes the argument, and leaves the rest untouched.

What a dealer can deny, and what they cannot

The closer a failed component sits to the suspension, and the further your modification sits from stock, the more room a manufacturer has to argue causation.

What a legitimate denial looks like

A defensible denial is specific: It names the failed part, describes the mechanism by which your modification caused that failure, and references the inspection findings. A torn CV boot with contaminated grease on a car raised three inches with no geometry correction is a case a manufacturer can support.

An illegitimate denial is general: It refers to "the modifications" without naming one, identifies no mechanism, and arrives before anyone has inspected the failed part. If that is what you are handed, ask for it in writing with the part and the causal finding named. That request alone resolves many of these conversations, because a written denial has to survive scrutiny in a way a verbal one never does.

How to protect yourself before you install

Document the car before anything changes. Photograph the odometer, the suspension at all four corners and the underside, and keep the dated images with the invoice for parts and labor and the alignment printout.

The alignment sheet carries more weight than owners expect. Correct camber and toe on paper is direct evidence the car was set up properly, and it removes the easiest causation argument a dealer has. We specify a front and rear wheel alignment on our Crosstrek GU and RAV4 A50 kits and include front camber correction in the box, so you get that printout as a matter of course.

The warranty we put behind our own parts

The other half of the question is what happens if the lift kit itself fails, and that is on us rather than Subaru or Toyota. Here is where each US kit stands.

Our Trail Activated kits for the Crosstrek GU and RAV4 A50 carry a Limited Lifetime warranty in the US, and most of the Bilstein range does too. Three Bilstein kits carry three years instead, and we would rather print that plainly than let you find out later.

The Crosstrek GU and RAV4 A50 kits each come in a standard duty and a heavy duty spec, on the same warranty either way. Standard duty is the one to buy for daily driving, touring and occasional cargo. Heavy duty kits are designed for consistently loaded vehicles and are not intended for regular unloaded use, so they belong under an overland build, a trade vehicle or a permanent drawer and roof tent setup rather than a car that spends the week empty. On fitment, the RAV4 A50 application covers standard and hybrid variants, while the PHEV is not covered, and the Crosstrek GU listing excludes the Wilderness trim. Confirm model year, trim and drivetrain before you order.

FAQs

Looking for more information about lift kits and factory warranty coverage? Below we answer the most commonly asked questions