Plenty of tuners offer similar tweaks for the Focus ST, so Ford knows it has to provide a unique selling point in terms of warranty coverage. (automobilemag.com)
To qualify, the item must have a U.S. manufacturer's warranty, and the original term of the warranty must be 3 years or less. (upgradedpoints.com)
The Powerline does not disappoint in terms of the warranty either. (geekwrapped.com)