When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
They are X codes according to the SRI number. 43-818 corresponds to x code in the SRI book posted in the tech folder. But, in my reading on the site, I guess Ford's x codes are heavier duty. Quality will depend on the manufacturer. I had a good experience with Mercer Spring here in Trenton. Holding up well and I have a normal rake with ATS C mod rears. 43-818 is probably in between X code and V code fronts and would be closer to X code.
The nice part of the 43-818 is that I didn't need a new track bar. That might explain why some have "x" codes and don't need a new track bar while others who have X codes need a new track bar.
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.