People really need to read up on the Magnusson-Moss act before suggesting it as a scapegoat for aftermarket (off-road only) performance parts.
Below are some reading materials on this topic that doesn't involve SEMA's deceptive explanation:
A.
https://www.ftc.gov/business-guidanc...#Magnuson-Moss
B.
https://www.yourlemonlawrights.com/m...s-warranty-act
C.
https://www.autocare.org/government-...s-Warranty-Act